CN113473002A - Display method and device of preview image, computer equipment and storage medium - Google Patents
Display method and device of preview image, computer equipment and storage medium Download PDFInfo
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- 230000003287 optical effect Effects 0.000 claims abstract description 141
- 238000004590 computer program Methods 0.000 claims description 30
- 230000008859 change Effects 0.000 claims description 23
- 230000003213 activating effect Effects 0.000 claims description 3
- 238000012545 processing Methods 0.000 description 8
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- H—ELECTRICITY
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- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/67—Focus control based on electronic image sensor signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/63—Control of cameras or camera modules by using electronic viewfinders
- H04N23/631—Graphical user interfaces [GUI] specially adapted for controlling image capture or setting capture parameters
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Abstract
The embodiment of the invention provides a method and a device for displaying a preview image, computer equipment and a storage medium, and relates to the technical field of photographing. The method comprises the following steps: the method comprises the steps of receiving zoom operation input by a user, wherein the zoom operation is used for adjusting an optical zoom multiple corresponding to a preview image when image data obtained by a first camera is displayed, starting a second camera according to the zoom direction of the zoom operation, then judging whether a target zoom multiple of the preview image corresponding to the zoom operation is in a zoom range corresponding to the second camera, and if so, displaying the preview image based on the image data obtained by the second camera. The embodiment of the invention is used for solving the problem of preview jump generated when the camera on the terminal equipment is switched.
Description
Technical Field
The present invention relates to the field of photographing technologies, and in particular, to a method and an apparatus for displaying a preview image, a computer device, and a storage medium.
Background
The focal length is a key factor influencing the quality of a picture in the process of taking the picture, and the zooming of a camera generally has two modes: one is digital zoom, and the other is optical zoom, which is a way of processing an image by an algorithm, but the processing way may lose image quality, and although the optical zoom may not lose image quality, a variable-focus lens is required on hardware, for example, a zoom camera module needs to be integrated on a mobile phone, which may increase the thickness of the mobile phone.
In prior art, in order to overcome above-mentioned painful point, adopted mixed zoom scheme, adopt the camera of a plurality of focuses to constitute a set of camera promptly, carry out the switching of camera according to the zoom scope of every camera, carry out digital zooming again after that, but adopt above-mentioned mixed zoom mode among the prior art, have preview jump problem when switching between the different focus cameras, can appear the card phenomenon of pause, user experience is not good.
Disclosure of Invention
In view of this, the present invention provides a method and an apparatus for displaying a preview image, a computer device, and a storage medium, so that when a user performs a zoom operation during a photographing process, switching of a camera and display of a preview image acquired by the switched camera are quickly achieved, and a problem of preview jump is solved.
In order to achieve the above object, the embodiments of the present invention provide the following technical solutions:
in a first aspect, an embodiment of the present invention provides a method for displaying a preview image, where the method includes:
receiving a zoom operation input by a user, wherein the zoom operation is an operation input by the user and used for adjusting an optical zoom multiple corresponding to a preview image when the preview image is displayed based on image data acquired by a first camera;
starting a second camera according to the zooming direction of the zooming operation; the second camera is one of a plurality of cameras installed on the terminal equipment, which is adjacent to the optical zoom multiple of the first camera, and the change direction from the optical zoom multiple of the first camera to the optical zoom multiple of the second camera is the same as the zoom direction;
judging whether the target zooming multiple of the preview image corresponding to the zooming operation is within the zooming range corresponding to the second camera or not;
and if so, displaying the preview image based on the image data acquired by the second camera.
As an optional implementation manner of the embodiment of the present invention, the starting the second camera according to the zoom direction of the zoom operation includes:
when the zooming direction is a direction for increasing the optical zooming multiple corresponding to the preview image, starting the second camera of which the optical zooming multiple is larger than that of the first camera;
and when the zooming direction is the direction of reducing the optical zooming multiple corresponding to the preview image, starting the second camera of which the optical zooming multiple is smaller than that of the first camera.
As an optional implementation manner of the embodiment of the present invention, after the second camera is started according to the zoom direction of the zoom operation, the method further includes:
acquiring initialization parameters of the first camera;
and carrying out initialization setting on the second camera based on the initialization parameters of the first camera.
As an optional implementation manner of the embodiment of the present invention, the displaying the preview image based on the image data acquired by the second camera includes:
determining the zoom multiple of the digital zoom according to the optical zoom multiple of the second camera and the target zoom multiple;
and carrying out digital zooming on the image data acquired by the second camera based on the zooming multiple of the digital zooming, and generating and displaying the preview image.
As an optional implementation manner of the embodiment of the present invention, the method further includes:
if the target zooming multiple of the preview image corresponding to the zooming operation is within the zooming range corresponding to the third camera, starting the third camera;
displaying the preview image based on the image data acquired by the third camera;
the change direction from the optical zooming multiple of the first camera to the optical zooming multiple of the second camera is the same as the change direction from the optical zooming multiple of the second camera to the optical zooming multiple of the third camera.
As an optional implementation manner of the embodiment of the present invention, after the displaying of the preview image is performed based on the image data acquired by the second camera, the method further includes:
generating a first closing instruction;
and closing the first camera according to the first closing instruction.
As an optional implementation manner of the embodiment of the present invention, the method further includes:
if the target zoom multiple of the preview image corresponding to the zoom operation does not belong to the zoom range corresponding to the second camera, generating a second closing instruction;
and closing the second camera according to the second closing instruction.
In a second aspect, an embodiment of the present invention provides a display apparatus for previewing an image, including:
the receiving module is used for receiving zoom operation input by a user, wherein the zoom operation is operation which is input by the user and used for adjusting an optical zoom multiple corresponding to a preview image when the preview image is displayed based on image data acquired by a first camera;
the starting module is used for starting the second camera according to the zooming direction of the zooming operation; the second camera is one of a plurality of cameras installed on the terminal equipment, which is adjacent to the optical zoom multiple of the first camera, and the change direction from the optical zoom multiple of the first camera to the optical zoom multiple of the second camera is the same as the zoom direction;
the judging module is used for judging whether the target zooming multiple of the preview image corresponding to the zooming operation is within the zooming range corresponding to the second camera or not;
and the display module is used for displaying the preview image based on the image data acquired by the second camera under the condition that the target zoom multiple of the preview image corresponding to the zoom operation is within the zoom range corresponding to the second camera.
As an optional implementation manner of the embodiment of the present invention, when the zoom direction is a direction in which an optical zoom multiple corresponding to the preview image is increased, the starting module is specifically configured to start the second camera whose optical zoom multiple is greater than the optical zoom multiple of the first camera;
when the zoom direction is a direction in which the optical zoom multiple corresponding to the preview image is reduced, the starting module is specifically configured to start the second camera whose optical zoom multiple is smaller than the optical zoom multiple of the first camera.
As an optional implementation manner of the embodiment of the present invention, the apparatus further includes: the setting module is used for acquiring the initialization parameters of the first camera after the second camera is started according to the zooming direction of the zooming operation;
and carrying out initialization setting on the second camera based on the initialization parameters of the first camera.
As an optional implementation manner of the embodiment of the present invention, when the preview image is displayed based on the image data acquired by the second camera, the display module is specifically configured to determine a zoom factor of a digital zoom according to an optical zoom factor of the second camera and the target zoom factor;
and carrying out digital zooming on the image data acquired by the second camera based on the zooming multiple of the digital zooming, and generating and displaying the preview image.
As an optional implementation manner of the embodiment of the present invention, the starting module is further configured to start a third camera when a target zoom multiple of the preview image corresponding to the zoom operation is within a zoom range corresponding to the third camera;
the display module is further configured to display the preview image based on the image data acquired by the third camera;
the change direction from the optical zooming multiple of the first camera to the optical zooming multiple of the second camera is the same as the change direction from the optical zooming multiple of the second camera to the optical zooming multiple of the third camera.
As an optional implementation manner of the embodiment of the present invention, the apparatus further includes: the processing module is used for generating a first closing instruction after the preview image is displayed based on the image data acquired by the second camera;
and closing the first camera according to the first closing instruction.
As an optional implementation manner of the embodiment of the present invention, when the target zoom multiple of the preview image corresponding to the zoom operation does not belong to the zoom range corresponding to the second camera, the processing module is further configured to generate a second close instruction;
and closing the second camera according to the second closing instruction.
In a third aspect, an embodiment of the present invention provides a computer device, including: a memory for storing a computer program and a processor; the processor is configured to execute the steps of the method for displaying a preview image according to the first aspect or any one of the optional embodiments of the first aspect when the computer program is called.
In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps of the method for displaying a preview image according to the first aspect or any optional implementation manner of the first aspect.
The embodiment of the invention provides a method and a device for displaying a preview image, computer equipment and a storage medium, wherein when terminal equipment receives a zooming operation of a user, a second camera is started according to the zooming direction of the zooming operation, but the preview image generated based on image data acquired by a first camera is still displayed on a preview interface, and after the target zooming multiple acquired by the user after the zooming operation is determined to be within the zooming range corresponding to the second camera, the preview image generated based on the image data acquired by the second camera is directly displayed, which is equivalent to the action of switching the cameras in advance, so that the problem of preview jump when the first camera is switched to the second camera is solved, the phenomenon of pause is avoided, and the user experience is improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
Fig. 1 is an application scene diagram of a display method of a preview image according to an embodiment of the present invention;
FIG. 2 is a flowchart illustrating steps of a method for displaying a preview image according to an embodiment of the present invention;
fig. 3 is a flowchart illustrating a method for displaying a preview image according to another embodiment of the present invention;
FIG. 4 is a flowchart illustrating steps of a method for displaying a preview image according to another embodiment of the present invention;
FIG. 5 is a block diagram of a display device for previewing images according to an embodiment of the present invention;
FIG. 6 is a block diagram of a display device for preview images according to another embodiment of the present invention;
fig. 7 is an internal structural view of a computer device in one embodiment of the present invention.
Detailed Description
In order that the above objects, features and advantages of the present invention may be more clearly understood, a solution of the present invention will be further described below. It should be noted that the embodiments of the present invention and features of the embodiments may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those described herein; it is to be understood that the embodiments described in this specification are only some embodiments of the invention, and not all embodiments.
The terms "first" and "second," and the like, in the description and in the claims of the present invention are used for distinguishing between synchronized objects, and are not used to describe a particular order of objects. For example, the first camera and the second camera are used to distinguish different cameras, rather than to describe a particular order of the cameras.
In the embodiments of the present invention, words such as "exemplary" or "for example" are used to mean serving as examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "e.g.," an embodiment of the present invention is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, the use of the words "exemplary" or "such as" are intended to present concepts in a concrete fashion, and in the description of embodiments of the present invention, the meaning of "a plurality" means two or more unless otherwise indicated.
The method for displaying a preview image according to the embodiment of the present invention is applied to a terminal device, and as shown in fig. 1, the terminal device 100 includes, but is not limited to: a plurality of cameras (shown in fig. 1 by taking three cameras as an example) with different optical zoom multiples, a processing module 104, a display module 105, a user input module 106, a storage module 107, an interface module 109, and the like.
The camera 101, the camera 102 and the camera 103 are cameras with different optical zoom multiples and are used for acquiring image data; the processor 104 is a control center of the terminal device, connects various parts of the whole terminal device by using various interfaces and lines, executes various functions and processes data of the terminal device by running or executing an application program stored in the storage module 107 and calling data stored in the storage module 107, for example, processes image data acquired by a camera to generate an image; the digital zoom module 108 performs digital zoom on the image generated by the processing module to generate a corresponding preview image; the Display module 105 is configured to Display the generated preview image on a preview interface, and the Display unit 105 may include a Display panel 1051, and the Display panel 1051 may be configured in the form of a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like. The user input module 106 is configured to receive a zoom operation input by a user, receive an instruction input by the user to take a picture, receive input numeric or character information, and the like, and specifically, the user input module 106 includes a touch panel 1061 and other input devices 1062. Touch panel 1061, also referred to as a touch screen, may collect touch operations by a user on or near it (e.g., operations by a user on touch panel 1061 or near touch panel 1061 using a finger, a stylus, or any other suitable object or attachment). The touch panel 1061 may include two parts, a touch detection device and a touch controller; the storage module 107 can be used for storing software programs and various data, and the storage module 107 can mainly include a storage program area and a storage data area, wherein the storage program area can store application programs (such as a sound playing function and an image playing function) required by at least one function, and the storage data area at least stores image data acquired by the camera; the interface module 109 is an interface for connecting an external device to the terminal apparatus 100. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, and so forth.
Those skilled in the art will appreciate that the terminal device configuration shown in fig. 1 does not constitute a limitation of the terminal device, and that the terminal device may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components. In the embodiment of the present application, the terminal device includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palm computer, a vehicle-mounted terminal, a wearable device, a pedometer, and the like.
In an embodiment of the present invention, a method for displaying a preview image is provided, and this embodiment is mainly illustrated by applying the method to the terminal device 100 in fig. 1. Referring to fig. 2, the method includes:
and S110, receiving zoom operation input by a user.
When the zoom operation is to display the preview image based on the image data acquired by the first camera, the user inputs an operation for adjusting the optical zoom multiple corresponding to the preview image.
Specifically, the first camera is a camera that is started when the zoom operation of the user is received and a preview image generated based on image data acquired by the camera is displayed on a preview interface of the terminal device, and the first camera may be any one of a plurality of cameras installed on the terminal device, for example, a camera that is started by default when the user opens the APP for taking a picture, or a camera that is started after the user zooms last time.
The preview image is an image that is generated based on image data acquired by the corresponding camera and is not stored, and may be displayed on the preview interface or may be hidden and not displayed. And the optical zoom multiple corresponding to the preview image is the optical zoom multiple of the camera corresponding to the preview image.
The zoom operation input by the user may be a touch click operation of the user on a screen of the terminal device, or a click operation of the user on a control of the terminal device through a peripheral device such as a mouse, or a voice instruction input by the user, or a specific gesture input by the user.
In some embodiments of the present invention, the specific gesture may be any one of a single-tap gesture, a slide gesture, a pressure recognition gesture, a long-press gesture, an area change gesture, a double-press gesture, and a double-tap gesture.
And S120, starting the second camera according to the zooming direction of the zooming operation.
The second camera is one of a plurality of cameras installed on the terminal equipment, which is adjacent to the optical zoom multiple of the first camera, and the change direction from the optical zoom multiple of the first camera to the optical zoom multiple of the second camera is the same as the zoom direction.
Specifically, when the optical zoom factor of the second camera is greater than the optical zoom factor of the first camera, and when the zoom direction of the zoom operation of the user is a direction of increasing the optical zoom factor corresponding to the preview image, the change direction from the optical zoom factor of the first camera to the optical zoom factor of the second camera is the same as the zoom direction; when the optical zoom multiple of the second camera is smaller than that of the first camera, when the zoom direction of the user zoom operation is a direction of reducing the optical zoom multiple corresponding to the preview image, the change direction from the optical zoom multiple of the first camera to the optical zoom multiple of the second camera is the same as the zoom direction.
As an optional implementation manner of this embodiment, when the zoom direction is a direction in which an optical zoom multiple corresponding to the preview image is increased, the second camera having an optical zoom multiple larger than that of the first camera is started;
and when the zooming direction is the direction of reducing the optical zooming multiple corresponding to the preview image, starting a second camera of which the optical zooming multiple is smaller than that of the first camera.
Specifically, a terminal device is provided with three cameras, namely a wide-angle camera, a standard camera and a telephoto camera, the three cameras correspond to optical zoom multiples of which the optical zoom multiple of the wide-angle camera is smaller than that of the standard camera and the optical zoom multiple of the standard camera is smaller than that of the telephoto camera, and when the first camera is the standard camera and the zoom direction is the direction of increasing the optical zoom multiple corresponding to the preview image, the telephoto camera (the second camera) is started; and when the first camera is a standard camera and the zooming direction is a direction for reducing the optical zooming multiple corresponding to the preview image, starting the wide-angle camera (the second camera).
Illustratively, in the case that the zoom operation of the user is a zoom operation of two fingers on the preview interface, and the first camera is a standard camera, when the distance between two contact points formed by the two fingers of the user contacting the terminal screen is increasing, the zoom direction is a direction for increasing the optical zoom multiple corresponding to the preview image, and the telephoto camera is started, and when the distance between the two contact points is decreasing, the zoom direction is a direction for decreasing the optical zoom multiple corresponding to the preview image, and the wide-angle camera is started.
And S130, judging whether the target zoom multiple of the preview image corresponding to the zoom operation is in the zoom range corresponding to the second camera.
If yes, the following step S140 is executed.
The zoom range is a zoom multiple interval formed by the sum of the optical zoom multiple of the corresponding camera and the zoom multiple of the digital zoom, the minimum value of the interval is the minimum value of the sum of the optical zoom multiple of the corresponding camera and the digital zoom multiple, and the maximum value of the interval is the maximum value of the sum of the optical zoom multiple of the corresponding camera and the digital zoom multiple. And under the condition that the target zoom multiple of the preview image corresponding to the zoom operation is in the zoom range corresponding to the second camera, the target zoom multiple is the sum of the optical zoom multiple of the second camera and the zoom multiple of the corresponding digital zoom.
It should be noted that the optical zoom factor of the camera is related to the focal length of the camera, and since the focal lengths of the cameras installed on the terminal device are different, the optical zoom factors of the cameras are also different, and the digital zoom factors of the first camera and the second camera may be the same or different.
For example, when the zoom range of a wide-angle camera installed on the terminal device is 0 to 1 time, the zoom range of a standard camera is 1 to 4 times, and the zoom range of a telephoto camera is 4 to 8 times, in the case that the first camera is the wide-angle camera, the zoom direction of the zoom operation of the user is a direction for increasing the optical zoom multiple, the terminal device starts the standard camera (second camera) according to the zoom direction, if the target zoom multiple corresponding to the zoom operation of the user does not belong to the zoom range of 1 to 4 times, for example, 5.6 times, it is determined that the target zoom multiple of the preview image corresponding to the zoom operation does not belong to the zoom range corresponding to the standard camera (second camera), and if the target zoom multiple corresponding to the zoom operation of the user belongs to the zoom range of 1 to 4 times, for example, 3.2 times, it is determined that the target zoom multiple of the preview image corresponding to the zoom operation is in the variation range corresponding to the standard camera (second camera) In the coke range.
And S140, displaying a preview image based on the image data acquired by the second camera.
Specifically, based on the above description of step S130, the first camera is a wide-angle camera, and when the target zoom multiple corresponding to the zoom operation of the user belongs to the zoom range of 1 to 4 times (the standard camera), it is determined that the target zoom multiple of the preview image corresponding to the zoom operation is within the zoom range corresponding to the second camera (the standard camera), and the preview image generated based on the image data acquired by the standard camera is displayed.
According to the method for displaying the preview image, provided by the embodiment of the invention, when the zoom operation of the user is received, the second camera is started according to the zoom direction of the zoom operation, but the preview image generated based on the image data acquired by the first camera is still displayed on the preview interface, and after the target zoom multiple obtained after the zoom operation of the user is determined to be within the zoom range corresponding to the second camera, the preview image generated based on the image data acquired by the second camera is directly displayed, which is equivalent to the action of switching the cameras is performed in advance, so that the problem of preview jump when the first camera is switched to the second camera is solved, the phenomenon of pause is avoided, and the user experience is improved.
Fig. 3 is a flowchart of steps of a method for displaying a preview image according to another embodiment of the present invention, and fig. 3 is a description of another implementation manner of the present invention based on the embodiment shown in fig. 2, and further includes, after step S120 (activating the second camera according to the zoom direction of the zoom operation):
and S121, acquiring initialization parameters of the first camera.
And S122, initializing and setting the second camera based on the initialization parameters of the first camera.
Specifically, the initialization parameter of the first camera includes at least one of an auto focus parameter, an auto exposure parameter, an auto white balance parameter, a flash parameter, and a parameter corresponding to a preview superimposition effect.
The initialization parameter of the second camera may be obtained by directly and automatically copying the initialization parameter of the first camera, or may be manually set as needed, which is not limited herein.
Alternatively, referring to fig. 3, steps S140a to S140b may be implemented as step S140 in fig. 2 (displaying a preview image based on the image data acquired by the second camera).
S140a, the zoom factor of the digital zoom is determined according to the optical zoom factor of the second camera and the target zoom factor.
S140b, digitally zooming the image data acquired by the second camera based on the zoom factor of the digital zoom, and generating and displaying a preview image.
And the zooming multiple of the digital zooming of the second camera is equal to the target zooming multiple minus the optical zooming multiple of the second camera.
And after the zoom multiple of the digital zoom of the second camera is determined according to the target zoom multiple, the digital zoom is carried out on the second camera according to the zoom multiple of the digital zoom, and a preview image is generated and displayed.
Optionally, after step S140 (displaying a preview image based on the image data acquired by the second camera), the method further includes:
and S141, generating a first closing instruction.
And S142, closing the first camera according to the first closing instruction.
After the preview image generated by the image data acquired by the second camera is displayed, the first camera is closed, and the second camera is started before the preview image generated by the image data acquired by the second camera is displayed, so that the switching between the cameras is smoother, the occurrence of the karton phenomenon is avoided, and the user experience is improved.
Fig. 4 is a flowchart illustrating steps according to still another embodiment of the present invention, and referring to fig. 4, if the target zoom magnification of the preview image corresponding to the zoom operation is within the zoom range corresponding to the third camera, the following steps S150 to S160 are executed in addition to the steps according to the embodiment illustrated in fig. 2.
And S150, starting the third camera.
And S160, displaying a preview image based on the image data acquired by the third camera.
The change direction from the optical zooming times of the first camera to the optical zooming times of the second camera is the same as the change direction from the optical zooming times of the second camera to the optical zooming times of the third camera.
Specifically, when the optical zoom multiple of the first camera is smaller than the optical zoom multiple of the second camera and the optical zoom multiple of the second camera is smaller than the optical zoom multiple of the third camera, or the optical zoom multiple of the first camera is larger than the optical zoom multiple of the second camera and the optical zoom multiple of the second camera is larger than the optical zoom multiple of the third camera, if a preview image generated based on image data acquired by the first camera is displayed on the preview interface, and it is detected that the zoom direction of zoom operation of a user is a direction switched to the second camera, the second camera is started, a value of a target zoom multiple is detected, if the target zoom multiple is in a zoom range corresponding to the second camera, a preview image generated based on image data acquired by the second camera is displayed on the preview interface, and if the value of the target zoom multiple already exceeds the zoom range corresponding to the second camera and is in a zoom range corresponding to the third camera The third camera may be started, and after a preview image generated based on image data acquired by the third camera is displayed, the second camera may be closed.
Optionally, if the target zoom multiple of the preview image corresponding to the zoom operation does not belong to the zoom range corresponding to the second camera, steps S170 to S180 are executed.
And S170, generating a second closing instruction.
And S180, closing the second camera according to the second closing instruction.
For example, if it is detected that the target zoom multiple still belongs to the zoom range corresponding to the first camera, the started second camera is closed, and a preview image generated based on the image data acquired by the first camera and the target zoom multiple is displayed on a preview interface.
As can be seen from the above description of the embodiments, the zoom operation of the user activates the camera corresponding to the zoom direction, but the zoom range to which the target zoom magnification obtained after the zoom operation belongs determines that the preview image obtained based on the most suitable camera is displayed on the preview interface, so that the quality of the image is ensured.
In one embodiment, the currently opened camera on the terminal device is a first camera, when a first zoom operation of a user is detected, a second camera is started according to the direction of the first zoom operation, the second camera is a camera adjacent to the optical zoom multiple of the first camera, whether a target zoom multiple corresponding to the first zoom operation is within the zoom range of the second camera is further judged, if yes, a preview image is displayed on image data acquired by the second camera, then if a second zoom operation of the user is detected, if the direction of the second zoom operation is the same as the direction of the first zoom operation, a third camera is started, the third camera is another camera adjacent to the optical zoom multiple of the second camera, if the direction of the second zoom operation is opposite to the direction of the first zoom operation, and detecting whether the target zoom multiple corresponding to the second zoom operation is in the zoom range corresponding to the first camera, if so, carrying out digital zoom on the first camera, adjusting the optical zoom multiple of the first camera to be the target zoom multiple corresponding to the second zoom operation, and displaying a preview image which is still generated based on the image data acquired by the first camera on a preview interface.
In one embodiment, a currently opened camera on the terminal device is a first camera, when a first zoom operation of a user is detected, a second camera is started according to a direction of the first zoom operation, the second camera is a camera adjacent to an optical zoom multiple of the first camera, whether a target zoom multiple corresponding to the first zoom operation is within a zoom range of the second camera is further judged, if the target zoom multiple corresponding to the first zoom operation is detected to be within the zoom range of the first camera, a preview image still generated based on image data acquired by the first camera is displayed on a preview interface, and if the direction of the second zoom operation is the same as the direction of the first zoom operation under the condition that the second zoom operation of the user is detected, whether the target zoom multiple corresponding to the second zoom operation is within the zoom range corresponding to the second camera is detected, if so, displaying a preview image generated based on the image data acquired by the second camera on a preview interface; and if the direction of the second zooming operation is opposite to that of the first zooming operation, starting a third camera, wherein the third camera is another camera adjacent to the optical zooming multiple of the first camera, and judging whether the target zooming multiple corresponding to the second zooming operation is within the zooming range of the third camera or not, so that the second camera can be closed or still kept in an open state.
In the above embodiment, if the second camera is kept in the on state, the number of times that the user starts the camera when performing a plurality of zoom operations can be reduced.
Based on the same inventive concept, as an implementation of the foregoing method, an embodiment of the present invention further provides a display apparatus for previewing an image, where the apparatus embodiment corresponds to the foregoing method embodiment, and for convenience of reading, details in the foregoing method embodiment are not repeated in this apparatus embodiment one by one, but it should be clear that the apparatus in this embodiment can correspondingly implement all the contents in the foregoing method embodiment.
Fig. 5 is a block diagram of a display apparatus for a preview image according to an embodiment of the present invention, and as shown in fig. 5, a display apparatus 500 for a preview image according to an embodiment of the present invention includes:
a receiving module 501, configured to receive a zoom operation input by a user, where the zoom operation is an operation input by the user to adjust an optical zoom multiple corresponding to a preview image when the preview image is displayed based on image data acquired by a first camera;
a starting module 502, configured to start a second camera according to the zooming direction of the zooming operation, where the second camera is one of multiple cameras installed on the terminal device, and the changing direction from the optical zooming multiple of the first camera to the optical zooming multiple of the second camera is the same as the zooming direction;
a determining module 503, configured to determine whether a target zoom multiple of the preview image corresponding to the zoom operation is within a zoom range corresponding to the second camera;
the display module 504 is configured to perform display of a corresponding preview image based on image data obtained by the second camera if the target zoom multiple of the preview image corresponding to the zoom operation is within the zoom range corresponding to the second camera.
As an optional implementation manner of the embodiment of the present invention, when the zooming direction is a direction in which an optical zooming multiple corresponding to the preview image is increased, the starting module 502 is specifically configured to start the second camera whose optical zooming multiple is greater than that of the first camera;
when the zoom direction is a direction in which the optical zoom factor corresponding to the preview image is decreased, the starting module 502 is specifically configured to start the second camera whose optical zoom factor is smaller than the optical zoom factor of the first camera.
As an optional implementation manner of the embodiment of the present invention, referring to fig. 6, fig. 6 is a block diagram of a device structure in another embodiment of the present invention, where the device further includes: a setting module 505, configured to obtain an initialization parameter of the first camera after the second camera is started according to the zoom direction of the zoom operation;
and carrying out initialization setting on the second camera based on the initialization parameters of the first camera.
As an optional implementation manner of the embodiment of the present invention, the display module 504 is specifically configured to determine a zoom factor of the digital zoom according to an optical zoom factor and a target zoom factor of the second camera when displaying a corresponding preview image based on image data acquired by the second camera;
and carrying out digital zooming on the image data acquired by the second camera based on the zooming multiple of the digital zooming, and generating and displaying a corresponding preview image.
As an optional implementation manner of the embodiment of the present invention, the starting module 502 is further configured to start the third camera when the target zoom multiple of the preview image corresponding to the zoom operation is within a zoom range corresponding to the third camera;
the display module 504 is further configured to display a preview image based on the image data acquired by the third camera;
the change direction from the optical zooming times of the first camera to the optical zooming times of the second camera is the same as the change direction from the optical zooming times of the second camera to the optical zooming times of the third camera.
As an optional implementation manner of the embodiment of the present invention, referring to fig. 6, the apparatus further includes: the processing module 506 is configured to generate a first close instruction after displaying a corresponding preview image based on image data acquired by the second camera;
and closing the first camera according to the first closing instruction.
As an optional implementation manner of the embodiment of the present invention, the processing module 506 is further configured to generate a second close instruction when the target zoom multiple of the preview image corresponding to the zoom operation does not belong to the zoom range corresponding to the second camera;
and closing the second camera according to the second closing instruction.
When the steps in the method embodiment are implemented, the display device of the preview image provided in the embodiment of the present invention first receives the zoom operation of the user, starts the corresponding second camera according to the zoom direction of the zoom operation, but displays the preview image on the preview interface, which is generated based on the image data acquired by the first camera, and directly displays the preview image generated based on the image data acquired by the second camera after determining that the target zoom multiple obtained by the user after the zoom operation is within the zoom range corresponding to the second camera, which is equivalent to performing the camera switching action in advance, thereby improving the preview jump problem when the first camera is switched to the second camera, avoiding the stuck phenomenon, and improving the user experience.
The display apparatus for preview images provided in this embodiment may execute the method for displaying preview images provided in the above method embodiments, and the implementation principle and the technical effect are similar, which are not described herein again. The respective modules in the display device of the preview image may be wholly or partially implemented by software, hardware, and a combination thereof. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.
In one embodiment, a computer device is provided, which may be a terminal device, and its internal structure diagram may be as shown in fig. 7. The computer device includes a processor, a memory, a communication interface, a display screen, and an input device connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The communication interface of the computer device is used for carrying out wired or wireless communication with an external terminal, and the wireless communication can be realized through WIFI, an operator network, Near Field Communication (NFC) or other technologies. The computer program is executed by a processor to implement the preview image display method provided by the above-described embodiments. The display screen of the computer equipment can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer equipment can be a touch layer covered on the display screen, a key, a track ball or a touch pad arranged on the shell of the computer equipment, an external keyboard, a touch pad or a mouse and the like.
Those skilled in the art will appreciate that the architecture shown in fig. 7 is merely a block diagram of some of the structures associated with the disclosed aspects and is not intended to limit the computing devices to which the disclosed aspects apply, as particular computing devices may include more or less components than those shown, or may combine certain components, or have a different arrangement of components.
In one embodiment, the display apparatus for preview images provided herein may be implemented in the form of a computer program that is executable on a computer device such as that shown in fig. 7. The memory of the computer device may store various program modules constituting the electronic device, such as a receiving module 501 and a starting module 502 shown in fig. 5. The computer program constituted by the respective program modules causes the processor to execute the steps in the preview image display method of the respective embodiments of the present application described in the present specification.
In one embodiment, there is provided a computer device comprising a memory storing a computer program and a processor implementing the following steps when the processor executes the computer program: receiving a zoom operation input by a user, wherein the zoom operation is an operation input by the user and used for adjusting an optical zoom multiple corresponding to a preview image when the preview image is displayed based on image data acquired by a first camera; starting a second camera according to the zooming direction of the zooming operation; the second camera is one of a plurality of cameras installed on the terminal equipment, which is adjacent to the optical zoom multiple of the first camera, and the change direction from the optical zoom multiple of the first camera to the optical zoom multiple of the second camera is the same as the zoom direction; judging whether the target zooming multiple of the preview image corresponding to the zooming operation is within the zooming range corresponding to the second camera or not; and if so, displaying the preview image based on the image data acquired by the second camera.
In one embodiment, the processor, when executing the computer program, further performs the steps of: when the zooming direction is a direction for increasing the optical zooming multiple corresponding to the preview image, starting a second camera of which the optical zooming multiple is larger than that of the first camera; and when the zooming direction is the direction of reducing the optical zooming multiple corresponding to the preview image, starting a second camera of which the optical zooming multiple is smaller than that of the first camera.
In one embodiment, the processor, when executing the computer program, further performs the steps of: acquiring initialization parameters of a first camera after a second camera is started according to the zooming direction of zooming operation; and carrying out initialization setting on the second camera based on the initialization parameters of the first camera.
In one embodiment, the processor, when executing the computer program, further performs the steps of: determining the zoom multiple of the digital zoom according to the optical zoom multiple of the second camera and the target zoom multiple; and carrying out digital zooming on the image data acquired by the second camera based on the zooming multiple of the digital zooming, and generating and displaying a corresponding preview image.
In one embodiment, the processor, when executing the computer program, further performs the steps of: when the target zooming multiple of the preview image corresponding to the zooming operation is within the zooming range corresponding to the third camera, starting the third camera; displaying a preview image based on image data acquired by the third camera;
the change direction from the optical zooming times of the first camera to the optical zooming times of the second camera is the same as the change direction from the optical zooming times of the second camera to the optical zooming times of the third camera.
In one embodiment, the processor, when executing the computer program, further performs the steps of: generating a first closing instruction after the preview image is displayed based on the image data acquired by the second camera; and closing the first camera according to the first closing instruction.
In one embodiment, the processor, when executing the computer program, further performs the steps of: when the target zooming multiple of the preview image corresponding to the zooming operation does not belong to the zooming range corresponding to the second camera, generating a second closing instruction; and closing the second camera according to the second closing instruction.
When the computer device provided by the embodiment of the present invention implements the steps in the method embodiments, first, a zoom operation of a user is received, and a corresponding second camera is started according to a zoom direction of the zoom operation, but a preview image generated based on image data acquired by a first camera is still displayed on a preview interface, and after it is determined that a target zoom multiple obtained by the user after the zoom operation is performed is within a zoom range corresponding to the second camera, a preview image generated based on image data acquired by the second camera is directly displayed, which is equivalent to performing a camera switching action in advance, so that a preview jump problem when the first camera is switched to the second camera is improved, a stuck phenomenon is avoided, and user experience is improved.
The computer device provided in this embodiment may implement the method for displaying a preview image provided in the foregoing method embodiment, and the implementation principle and the technical effect are similar, which are not described herein again.
In one embodiment, a computer-readable storage medium is provided, having a computer program stored thereon, which when executed by a processor, performs the steps of: receiving a zoom operation input by a user, wherein the zoom operation is an operation input by the user and used for adjusting an optical zoom multiple corresponding to a preview image when the preview image is displayed based on image data acquired by a first camera; starting a second camera according to the zooming direction of the zooming operation; the second camera is one of a plurality of cameras installed on the terminal equipment, which is adjacent to the optical zoom multiple of the first camera, and the change direction from the optical zoom multiple of the first camera to the optical zoom multiple of the second camera is the same as the zoom direction; judging whether the target zooming multiple of the preview image corresponding to the zooming operation is within the zooming range corresponding to the second camera or not; and if so, displaying the preview image based on the image data acquired by the second camera.
In one embodiment, the computer program when executed by the processor further performs the steps of: when the zooming direction is a direction for increasing the optical zooming multiple corresponding to the preview image, starting a second camera of which the optical zooming multiple is larger than that of the first camera; and when the zooming direction is the direction of reducing the optical zooming multiple corresponding to the preview image, starting a second camera of which the optical zooming multiple is smaller than that of the first camera.
In one embodiment, the computer program when executed by the processor further performs the steps of: acquiring initialization parameters of a first camera after a second camera is started according to the zooming direction of zooming operation; and carrying out initialization setting on the second camera based on the initialization parameters of the first camera.
In one embodiment, the computer program when executed by the processor further performs the steps of: determining the zoom multiple of the digital zoom according to the optical zoom multiple of the second camera and the target zoom multiple; and carrying out digital zooming on the image data acquired by the second camera based on the zooming multiple of the digital zooming, and generating and displaying a corresponding preview image.
In one embodiment, the computer program when executed by the processor further performs the steps of: when the target zooming multiple of the preview image corresponding to the zooming operation is within the zooming range corresponding to the third camera, starting the third camera; displaying a preview image based on image data acquired by the third camera;
the change direction from the optical zooming times of the first camera to the optical zooming times of the second camera is the same as the change direction from the optical zooming times of the second camera to the optical zooming times of the third camera.
In one embodiment, the computer program when executed by the processor further performs the steps of: generating a first closing instruction after the preview image is displayed based on the image data acquired by the second camera; and closing the first camera according to the first closing instruction.
In one embodiment, the computer program when executed by the processor further performs the steps of: when the target zooming multiple of the preview image corresponding to the zooming operation does not belong to the zooming range corresponding to the second camera, generating a second closing instruction; and closing the second camera according to the second closing instruction.
When the computer program provided by the embodiment of the present invention is executed by a processor to implement the steps in the method embodiments, a zoom operation of a user is received, a corresponding second camera is started according to a zoom direction of the zoom operation, but a preview image generated based on image data acquired by a first camera is still displayed on a preview interface, and after it is determined that a target zoom multiple obtained after the zoom operation by the user is within a zoom range corresponding to the second camera, a preview image generated based on image data acquired by the second camera is directly displayed, which is equivalent to performing a camera switching action in advance, so that a preview jump problem when the first camera is switched to the second camera is improved, a pause phenomenon is avoided, and user experience is improved.
The computer program stored on the computer-readable storage medium provided in this embodiment may implement the method for displaying a preview image provided in the foregoing method embodiment, and the implementation principle and the technical effect are similar, and are not described herein again.
It will be understood by those skilled in the art that all or part of the processes of the embodiments of the methods described above can be implemented by hardware related to instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, database, or other medium used in the embodiments provided herein may include at least one of non-volatile and volatile memory. Non-volatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical storage, or the like. Volatile Memory can include Random Access Memory (RAM) or external cache Memory. By way of illustration and not limitation, RAM is available in many forms, such as Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), and the like.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above examples only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A method of displaying a preview image, comprising:
receiving a zoom operation input by a user, wherein the zoom operation is an operation input by the user and used for adjusting an optical zoom multiple corresponding to a preview image when the preview image is displayed based on image data acquired by a first camera;
starting a second camera according to the zooming direction of the zooming operation, wherein the second camera is one of a plurality of cameras installed on the terminal equipment and is adjacent to the optical zooming multiple of the first camera, and the changing direction from the optical zooming multiple of the first camera to the optical zooming multiple of the second camera is the same as the zooming direction;
judging whether the target zooming multiple of the preview image corresponding to the zooming operation is within the zooming range corresponding to the second camera or not;
and if so, displaying the preview image based on the image data acquired by the second camera.
2. The method of claim 1, wherein activating a second camera according to a zoom direction of the zoom operation comprises:
when the zooming direction is a direction for increasing the optical zooming multiple corresponding to the preview image, starting the second camera of which the optical zooming multiple is larger than that of the first camera;
and when the zooming direction is the direction of reducing the optical zooming multiple corresponding to the preview image, starting the second camera of which the optical zooming multiple is smaller than that of the first camera.
3. The method of claim 1, wherein after activating a second camera according to a zoom direction of the zoom operation, the method further comprises:
acquiring initialization parameters of the first camera;
and carrying out initialization setting on the second camera based on the initialization parameters of the first camera.
4. The method of claim 1, wherein the displaying the preview image based on the image data acquired by the second camera comprises:
determining the zoom multiple of the digital zoom according to the optical zoom multiple of the second camera and the target zoom multiple;
and carrying out digital zooming on the image data acquired by the second camera based on the zooming multiple of the digital zooming, and generating and displaying the preview image.
5. The method of claim 1, further comprising:
if the target zooming multiple of the preview image corresponding to the zooming operation is within the zooming range corresponding to the third camera, starting the third camera;
displaying the preview image based on the image data acquired by the third camera;
the change direction from the optical zooming multiple of the first camera to the optical zooming multiple of the second camera is the same as the change direction from the optical zooming multiple of the second camera to the optical zooming multiple of the third camera.
6. The method of claim 1, wherein after the displaying of the preview image based on the image data acquired by the second camera, the method further comprises:
generating a first close instruction;
and closing the first camera according to the first closing instruction.
7. The method of claim 1, further comprising:
if the target zoom multiple of the preview image corresponding to the zoom operation does not belong to the zoom range corresponding to the second camera, generating a second closing instruction;
and closing the second camera according to the second closing instruction.
8. A display device for preview images, comprising:
the receiving module is used for receiving zoom operation input by a user, wherein the zoom operation is operation which is input by the user and used for adjusting an optical zoom multiple corresponding to a preview image when the preview image is displayed based on image data acquired by a first camera;
the starting module is used for starting the second camera according to the zooming direction of the zooming operation; the change direction from the optical zooming times of the first camera to the optical zooming times of the second camera is the same as the zooming direction;
the judging module is used for judging whether the target zooming multiple of the preview image corresponding to the zooming operation is within the zooming range corresponding to the second camera or not;
and if so, the display module is used for displaying the preview image based on the image data acquired by the second camera.
9. A computer device, comprising: a memory for storing a computer program and a processor; the processor is adapted to perform the steps of the method of displaying a preview image according to any of claims 1-7 when invoking the computer program.
10. A computer-readable storage medium, having stored thereon a computer program which, when being executed by a processor, carries out the steps of the method of displaying a preview image according to any one of claims 1 to 7.
Priority Applications (2)
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| CN202110560431.3A CN113473002A (en) | 2021-05-21 | 2021-05-21 | Display method and device of preview image, computer equipment and storage medium |
| PCT/CN2021/102452 WO2022241907A1 (en) | 2021-05-21 | 2021-06-25 | Display method and apparatus for preview image, and computer device and storage medium |
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| CN202110560431.3A CN113473002A (en) | 2021-05-21 | 2021-05-21 | Display method and device of preview image, computer equipment and storage medium |
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