WO2024257425A1 - 撮像装置、撮像装置の制御方法、プログラム、および記憶媒体 - Google Patents
撮像装置、撮像装置の制御方法、プログラム、および記憶媒体 Download PDFInfo
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- WO2024257425A1 WO2024257425A1 PCT/JP2024/009717 JP2024009717W WO2024257425A1 WO 2024257425 A1 WO2024257425 A1 WO 2024257425A1 JP 2024009717 W JP2024009717 W JP 2024009717W WO 2024257425 A1 WO2024257425 A1 WO 2024257425A1
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- imaging device
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- imaged
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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
- H04N23/61—Control of cameras or camera modules based on recognised objects
- H04N23/611—Control of cameras or camera modules based on recognised objects where the recognised objects include parts of the human body
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/28—Systems for automatic generation of focusing signals
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
- G03B13/32—Means for focusing
- G03B13/34—Power focusing
- G03B13/36—Autofocus systems
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B15/00—Special procedures for taking photographs; Apparatus therefor
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B7/00—Control of exposure by setting shutters, diaphragms or filters, separately or conjointly
- G03B7/08—Control effected solely on the basis of the response, to the intensity of the light received by the camera, of a built-in light-sensitive device
- G03B7/091—Digital circuits
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- H04N23/70—Circuitry for compensating brightness variation in the scene
- H04N23/75—Circuitry for compensating brightness variation in the scene by influencing optical camera components
Definitions
- One method of transition that is used when filming is to cover the lens with an obstruction such as a hand or the subject.
- an obstruction such as a hand or the subject.
- the screen goes dark, and the previous and next cuts are connected with the darkened scenes, making the transition between cuts look smooth.
- the camera's automatic exposure adjustment mechanism is enabled, covering the lens with an obstruction adjusts the exposure to match the state when the lens is covered. As a result, the screen may not go dark enough even though the lens is covered, and the video shot may not turn out as intended by the photographer.
- Patent document 1 discloses a method for controlling the start and stop of photography by determining whether the photographing lens is blocked or not.
- Patent Document 1 makes it possible to start or stop video recording when the shooting lens is completely covered, but does not anticipate exposure control when the shooting lens is covered during shooting. Therefore, if the photographer wants to darken the screen by covering the shooting lens, they may not be able to obtain the intended shooting results.
- the present invention aims to enable the photographer to obtain the intended shooting results when performing transition shooting, in which the screen is darkened by blocking the shooting lens.
- the imaging device of the present invention has an imaging means and an AE means that performs automatic exposure processing, and the AE means stops the automatic exposure processing when an object approaching the imaging device is imaged by the imaging means.
- the photographer when a photographer wishes to perform transition photography in which the image is darkened by blocking the shooting lens, the photographer can obtain the photographic results he or she intends.
- FIG. 1A and 1B are external views of a digital camera.
- FIG. 2 is a block diagram of the digital camera.
- FIG. 3 is a flowchart of the video shooting process.
- FIG. 4 is a flowchart of the approach determination process.
- Figures 1A and 1B are external views of a digital camera 100 as an example of an imaging device to which the present invention can be applied.
- Figure 1A is a front perspective view of the digital camera 100
- Figure 1B is a rear perspective view of the digital camera 100.
- the display unit 28 is provided on the rear surface of the digital camera 100 and displays images and various information.
- the touch panel 70a can detect touch operations on the display surface (touch operation surface) of the display unit 28.
- the outside-finder display unit 43 is provided on the top surface of the digital camera 100 and displays various settings of the digital camera 100, including the shutter speed and aperture.
- the shutter button 61 is an operating member for issuing shooting instructions.
- the mode change switch 60 is an operating member for switching between various modes.
- the terminal cover 40 is a cover that protects a connector (not shown) for connecting a connection cable or the like that connects the digital camera 100 to an external device.
- the main electronic dial 71 is a rotary operating member, and by turning the main electronic dial 71, settings such as the shutter speed and aperture can be changed.
- the power switch 72 is an operating member that switches the power of the digital camera 100 ON and OFF.
- the sub electronic dial 73 is a rotary operating member, and by turning the sub electronic dial 73, the selection frame (cursor) can be moved and images can be forwarded.
- the four-way key 74 is configured so that the up, down, left, and right parts can each be pressed, and processing can be performed according to which part of the four-way key 74 is pressed.
- the SET button 75 is a push button, and is mainly used to confirm a selection item, etc.
- the video button 76 is used to start or stop video shooting (recording).
- the AE lock button 77 is a push button, and pressing the AE lock button 77 in the shooting standby state fixes the exposure state.
- the enlarge button 78 is an operation button for switching the enlargement mode ON and OFF in the live view display (LV display) of the shooting mode. By turning the enlargement mode ON and then operating the main electronic dial 71, the live view image (LV image) can be enlarged or reduced.
- the enlargement button 78 functions as an operation button for enlarging the playback image or increasing its magnification ratio.
- the playback button 79 is an operation button for switching between the shooting mode and the playback mode.
- the menu button 81 is a push button used to perform an instruction operation to display a menu screen, and when the menu button 81 is pressed, a menu screen on which various settings can be made is displayed on the display unit 28.
- the user can intuitively configure various settings using the menu screen displayed on the display unit 28, the four-way key 74, and the SET button 75.
- the user can change (customize) the functions assigned to the operating members (such as buttons and rotary operating members).
- the touch bar 82 is a line-shaped touch operation member (line touch sensor) capable of receiving touch operations.
- the touch bar 82 is arranged in a position where it can be touched (touched) by the thumb of the right hand when the grip part 90 is held in the right hand (holding it with the little finger, ring finger, and middle finger of the right hand) so that the shutter button 61 can be pressed with the index finger of the right hand.
- the touch bar 82 is arranged in a position where it can be operated when the eyepiece part 16 is placed close to the eyepiece finder 17 and the user is in a position (shooting posture) so that the shutter button 61 can be pressed at any time.
- the touch bar 82 is a reception part that can receive tap operations (operations in which the user touches and then releases the touch position without moving it within a predetermined period of time) and slide operations to the left and right (operations in which the user touches and then moves the touch position while still touching) on the touch bar 82.
- the touch bar 82 is an operation member different from the touch panel 70a and does not have a display function.
- the touch bar 82 functions as a multi-function bar (M-Fn bar) to which various functions can be assigned, for example.
- the communication terminal 10 is a communication terminal through which the digital camera 100 communicates with the lens unit 150 (described later; detachable).
- the eyepiece 16 is the eyepiece of the eyepiece finder 17 (a peer-in type finder), and the user can view the image displayed on the internal EVF 29 (described later; electronic viewfinder) through the eyepiece 16.
- the eyepiece detection unit 57 is an eyepiece detection sensor that detects whether the user (photographer) has placed his/her eye on the eyepiece 16.
- the cover 202 is a cover for a slot that stores a storage medium 200 (described later).
- the grip unit 90 is a holding unit that is shaped to be easily held with the right hand when the user holds the digital camera 100.
- the shutter button 61 and the main electronic dial 71 are located in a position that can be operated with the index finger of the right hand when the digital camera 100 is held by gripping the grip unit 90 with the little finger, ring finger, and middle finger of the right hand.
- the sub electronic dial 73 and touch bar 82 are located in a position that can be operated with the thumb of the right hand.
- the thumb rest section 91 is a grip section provided on the rear side of the digital camera 100 at a position where it is easy to place the thumb of the right hand holding the grip section 90 when none of the operating members are being operated.
- the thumb rest section 91 is made of a rubber material or the like to increase the holding power (grip feeling).
- FIG. 2 is a block diagram showing the configuration of the digital camera 100.
- the lens unit 150 is a lens unit equipped with an interchangeable photographing lens.
- the lens 103 is usually composed of multiple lenses, but FIG. 2 shows only one lens for simplicity.
- the communication terminal 6 is a communication terminal that allows the lens unit 150 to communicate with the digital camera 100
- the communication terminal 10 is a communication terminal that allows the digital camera 100 to communicate with the lens unit 150.
- the lens unit 150 communicates with the system control unit 50 via these communication terminals 6 and 10.
- the lens unit 150 controls the aperture 1 via the aperture drive circuit 2 by the internal lens system control circuit 4.
- the lens unit 150 also adjusts the focus by displacing the lens 103 via the AF drive circuit 3 by the lens system control circuit 4.
- the shutter 101 is a focal plane shutter that can freely control the exposure time of the imaging unit 22 under the control of the system control unit 50.
- the imaging unit 22 is an imaging element (image sensor) composed of a CCD, CMOS element, or the like that converts an optical image into an electrical signal.
- the imaging unit 22 may have an imaging surface phase difference sensor that outputs defocus amount information to the system control unit 50.
- the A/D converter 23 converts the analog signal output from the imaging unit 22 into a digital signal.
- the image processing unit 24 performs predetermined processing (pixel interpolation, resizing such as reduction, color conversion, etc.) on the data from the A/D converter 23 or the data from the memory control unit 15.
- the image processing unit 24 also performs predetermined calculation processing using the captured image data, and the system control unit 50 performs exposure control and distance measurement control based on the calculation results obtained by the image processing unit 24. This allows TTL (through-the-lens) type AF processing (autofocus control), AE (automatic exposure) processing, EF (flash pre-flash) processing, etc. to be performed.
- the image processing unit 24 also performs predetermined calculation processing using the captured image data, and performs TTL type AWB (auto white balance) processing based on the obtained calculation results.
- the memory control unit 15 controls the transmission and reception of data between the A/D converter 23, image processing unit 24, and memory 32.
- the output data from the A/D converter 23 is written to the memory 32 via the image processing unit 24 and memory control unit 15.
- the output data from the A/D converter 23 is written to the memory 32 via the memory control unit 15 without going through the image processing unit 24.
- the memory 32 stores image data obtained by the imaging unit 22 and converted into digital data by the A/D converter 23, and image data to be displayed on the display unit 28 and EVF 29.
- the memory 32 has a storage capacity sufficient to store a predetermined number of still images and a predetermined period of video and audio.
- the memory 32 also serves as a memory (video memory) for displaying images.
- the D/A converter 19 converts the image data for display stored in the memory 32 into an analog signal and supplies it to the display unit 28 or the EVF 29. In this way, the image data for display written to the memory 32 is displayed by the display unit 28 or the EVF 29 via the D/A converter 19.
- the display unit 28 and the EVF 29 are displays such as LCDs or organic EL displays, and perform display according to the analog signal from the D/A converter 19.
- the digital signal that has been A/D converted by the A/D converter 23 and stored in the memory 32 is converted to an analog signal by the D/A converter 19, and the analog signal is transferred sequentially to the display unit 28 or the EVF 29 for display, thereby performing a live view display (LV).
- LV image live view image
- the system control unit 50 is a control unit consisting of at least one processor and/or at least one circuit, and controls the entire digital camera 100.
- the system control unit 50 is both a processor and a circuit.
- the system control unit 50 realizes each process described below by executing programs recorded in the non-volatile memory 56.
- the system control unit 50 also performs display control by controlling the memory 32, D/A converter 19, display unit 28, EVF 29, etc.
- the system memory 52 is, for example, a RAM, and the system control unit 50 loads constants, variables, programs read from the non-volatile memory 56, and the like for the operation of the system control unit 50 into the system memory 52.
- the non-volatile memory 56 is an electrically erasable and recordable memory, such as an EEPROM. Constants and programs for the operation of the system control unit 50 are recorded in the non-volatile memory 56.
- the programs referred to here are programs for executing the various flowcharts described below.
- the system timer 53 is a timing unit that measures the time used for various controls and the time of the built-in clock.
- the communication unit 54 transmits and receives video and audio signals to and from external devices connected wirelessly or via a wired cable.
- the communication unit 54 can also connect to a wireless LAN (Local Area Network) or the Internet.
- the communication unit 54 can also communicate with external devices via Bluetooth (registered trademark) or Bluetooth Low Energy (registered trademark).
- the communication unit 54 can transmit images (including LV images) captured by the imaging unit 22 and images recorded on the storage medium 200, and can receive image data and various other information from external devices.
- the attitude detection unit 55 detects the attitude of the digital camera 100 with respect to the direction of gravity. Based on the attitude detected by the attitude detection unit 55, it is possible to determine whether the image captured by the imaging unit 22 was captured with the digital camera 100 held horizontally or vertically.
- the system control unit 50 can add orientation information corresponding to the attitude detected by the attitude detection unit 55 to the image file of the image captured by the imaging unit 22, or rotate and record the image.
- An acceleration sensor, gyro sensor, or the like can be used as the attitude detection unit 55. It is also possible to detect the movement of the digital camera 100 (panning, tilting, lifting, whether it is stationary, etc.) using the acceleration sensor or gyro sensor that is the attitude detection unit 55.
- the eyepiece detection unit 57 is an eyepiece detection sensor that detects (approach detection) the approach (eyepiece) and departure (eye departure) of the eye (object) to the eyepiece 16 of the eyepiece finder 17 (hereinafter simply referred to as the "finder").
- the system control unit 50 switches the display unit 28 and the EVF 29 between display (display state) and non-display (non-display state) depending on the state detected by the eyepiece detection unit 57. More specifically, at least in the standby state for shooting and when the display destination switching setting is automatic switching, when the eye is not placed near the camera, the display destination is set to the display unit 28 and the display is turned on, and the EVF 29 is turned off.
- an infrared proximity sensor can be used as the eyepiece detection unit 57, and it can detect the approach of an object to the eyepiece 16 of the eyepiece finder 17 that has the EVF 29 built in.
- infrared light projected from a light projecting section (not shown) of the eyepiece detection section 57 is reflected by the object and received by a light receiving section (not shown) of the infrared proximity sensor. The amount of infrared light received can also determine how close the object is to the eyepiece section 16 (eyepiece distance).
- the eyepiece detection section 57 performs eyepiece detection to detect the proximity of the object to the eyepiece section 16.
- an object approaching within a predetermined distance from the non-eyepiece state (non-approaching state) it is detected that the object has been placed in eye contact.
- an object whose approach was detected is moved away from the eyepiece state (approaching state) by a predetermined distance or more, it is detected that the object has been removed.
- the threshold for detecting eye contact and the threshold for detecting removal of the eye may be different, for example, by providing a hysteresis.
- the eyepiece is in the eye contact state until removal of the eye is detected.
- the eyepiece After detecting the removal of the eye, the eyepiece is in the non-eye contact state until removal of the eye is detected.
- the infrared proximity sensor is just one example, and other sensors may be used for the eye proximity detection unit 57 as long as they can detect a state that can be considered as eye proximity.
- Various camera settings including shutter speed and aperture, are displayed on the outside viewfinder display 43 via the outside viewfinder display drive circuit 44.
- the power supply control unit 80 is composed of a battery detection circuit, a DC-DC converter, a switch circuit that switches between blocks to which electricity is applied, and other components, and detects whether a battery is installed, the type of battery, and the remaining battery power.
- the power supply control unit 80 also controls the DC-DC converter based on the detection results and instructions from the system control unit 50, and supplies the necessary voltage for the necessary period to each component, including the storage medium 200.
- the power supply unit 30 is composed of primary batteries such as alkaline batteries or lithium batteries, secondary batteries such as NiCd batteries, NiMH batteries, or Li batteries, an AC adapter, etc.
- the storage medium I/F 18 is an interface with a storage medium 200 such as a memory card or a hard disk.
- the storage medium 200 is a storage medium such as a memory card for recording captured images, and is composed of a semiconductor memory, a magnetic disk, etc.
- the operation unit 70 is an input unit that accepts operations from the user (user operations) and is used to input various operational instructions to the system control unit 50. As shown in FIG. 2, the operation unit 70 includes a mode change switch 60, a shutter button 61, a power switch 72, a touch panel 70a, and other operation members 70b.
- the other operation members 70b include a main electronic dial 71, a sub electronic dial 73, a four-way key 74, a SET button 75, a movie button 76, an AE lock button 77, a magnify button 78, a playback button 79, a menu button 81, a touch bar 82, and the like.
- the mode change switch 60 changes the operating mode of the system control unit 50 to one of still image shooting mode, video shooting mode, playback mode, etc.
- Modes included in the still image shooting mode include auto shooting mode, auto scene determination mode, manual mode, aperture priority mode (Av mode), shutter speed priority mode (Tv mode), and program AE mode (P mode).
- Av mode aperture priority mode
- Tv mode shutter speed priority mode
- P mode program AE mode
- the mode change switch 60 allows the user to directly switch to one of these modes. Alternatively, after switching to a list screen of shooting modes with the mode change switch 60, the user may selectively switch to one of the multiple displayed modes using other operating members.
- the video shooting mode may also include multiple modes.
- the shutter button 61 has a first shutter switch 62 and a second shutter switch 64.
- the first shutter switch 62 is turned ON when the shutter button 61 is pressed halfway (instruction to prepare for shooting) and generates a first shutter switch signal SW1.
- the system control unit 50 starts preparation operations for shooting such as AF processing (autofocus control), AE (auto exposure) processing, AWB (auto white balance) processing, and EF (pre-flash) processing in response to the first shutter switch signal SW1.
- the second shutter switch 64 is turned ON when the shutter button 61 is pressed fully (instruction to shoot) and generates a second shutter switch signal SW2.
- the system control unit 50 starts a series of shooting processing operations from reading out the signal from the imaging unit 22 to writing the captured image to the storage medium 200 as an image file in response to the second shutter switch signal SW2.
- Touch panel 70a is a touch sensor that detects various touch operations on the display surface of display unit 28 (the operation surface of touch panel 70a).
- Touch panel 70a and display unit 28 can be configured as one unit.
- touch panel 70a is configured so that its light transmittance does not interfere with the display of display unit 28, and is attached to the upper layer of the display surface of display unit 28.
- Input coordinates on touch panel 70a are then associated with display coordinates on the display surface of display unit 28. This makes it possible to provide a GUI (graphical user interface) that gives the user the feeling that they are directly operating the screen displayed on display unit 28.
- GUI graphical user interface
- the system control unit 50 can detect the following operations or states on the touch panel 70a.
- a finger or pen that has not been touching the touch panel 70a touches the touch panel 70a again, that is, the start of touching (hereinafter referred to as touch-down).
- a state in which the touch panel 70a is touched with a finger or a pen (hereinafter referred to as Touch-On)
- a finger or a pen is moved while touching the touch panel 70a (hereinafter referred to as Touch-Move).
- the finger or pen that has been touching the touch panel 70a is released from the touch panel 70a, that is, the touch ends (hereinafter referred to as Touch-Up).
- a state in which nothing is touching the touch panel 70a hereinafter referred to as Touch-Off)
- a touch on is also detected at the same time. After a touch down, touch on usually continues to be detected unless a touch up is detected. If a touch move is detected, touch on continues to be detected. Even if a touch on is detected, if the touch position does not move, a touch move is not detected. Once it is detected that all fingers or pens that were touching have touched up, touch off occurs.
- the system control unit 50 determines what kind of operation (touch operation) has been performed on the touch panel 70a based on the notified information. For touch moves, the direction of movement of the finger or pen moving on the touch panel 70a can also be determined for each vertical and horizontal component on the touch panel 70a based on changes in the position coordinates. If a touch move of a predetermined distance or more is detected, it is determined that a slide operation has been performed. An operation in which a finger is touched on the touch panel 70a, quickly moved a certain distance, and then released is called a flick.
- a flick is an operation in which a finger is quickly traced on the touch panel 70a as if flicking it. If a touch move of a predetermined distance or more at a predetermined speed or more is detected and a touch up is detected immediately, it can be determined that a flick has been performed (it can be determined that a flick has occurred following a slide operation). Furthermore, a touch operation in which multiple points (e.g., two points) are touched together (multi-touch) and the touch positions are brought closer together is called a pinch in, and a touch operation in which the touch positions are moved away from each other is called a pinch out. Pinch out and pinch in are collectively called a pinch operation (or simply a pinch).
- the touch panel 70a may be any of a variety of touch panel types, including a resistive film type, a capacitive type, a surface acoustic wave type, an infrared type, an electromagnetic induction type, an image recognition type, and an optical sensor type. There are types that detect a touch by contact with the touch panel, and types that detect a touch by the approach of a finger or a pen to the touch panel, and either type may be used.
- FIG. 3 is a flowchart of the video shooting mode process performed by the digital camera 100.
- the process in FIG. 3 is a series of processes from when the digital camera 100 starts shooting video to when the video shooting is completed. This process is realized by the system control unit 50 expanding a program stored in the non-volatile memory 56 into the system memory 52 and executing it.
- the process in FIG. 3 starts when the digital camera 100 starts in video shooting mode in response to the operation of the power switch 72, or when the mode of the digital camera 100 is switched to video shooting mode in response to the operation of the mode change switch 60.
- FIG. 3 is a process that detects the approach of an object to the digital camera 100 (the surface (lens surface) on which the lens unit 150 is attached) during video shooting and controls the automatic exposure process (AE process). Below, a description of processes unrelated to this process will be omitted. If an abnormal operation is performed during the process in FIG. 3, the process in FIG. 3 may be interrupted.
- the system control unit 50 determines whether or not an operation to end the video recording mode has been performed.
- An end operation is, for example, an operation to switch the mode of the digital camera 100 to another mode (operation of the mode change switch 60), or an operation to turn off the power of the digital camera 100 (operation of the power switch 72). If an end operation has been performed, the process proceeds to S302, and if not, the process proceeds to S304.
- the system control unit 50 determines whether or not video recording is in progress. If video recording is in progress, the process proceeds to S303; if not, the video recording mode process ends.
- the system control unit 50 ends signal reading from the imaging unit 22 and performs video recording end processing.
- the system control unit 50 obtains the captured video data from the memory 32 and records it on the storage medium 200 via the storage medium I/F 18.
- the system control unit 50 determines whether the video button 76 has been pressed. If the video button 76 has been pressed, the process proceeds to S305; if not, the process proceeds to S308.
- the system control unit 50 determines whether or not video recording is in progress. If video recording is in progress, the process proceeds to S306; if not, the process proceeds to S307.
- the system control unit 50 ends signal reading from the imaging unit 22 and performs video recording end processing.
- the system control unit 50 starts reading signals from the imaging unit 22 and performs video capture start processing.
- video capture the system control unit 50 converts data from the imaging unit 22 into digital data using the A/D converter 23, and records the data in the memory 32 as video data via the image processing unit 24 and memory control unit 15.
- the system control unit 50 determines whether or not video recording is in progress. If video recording is in progress, the process proceeds to S310; if not, the process proceeds to S309.
- the system control unit 50 performs AE processing based on the calculation results of the image processing unit 24. For example, the system control unit 50 determines whether the exposure of the image obtained by the imaging unit 22 is appropriate or not based on the calculation results of the image processing unit 24. If the exposure of the image is not appropriate, the system control unit 50 controls at least one of the exposure time of the imaging unit 22, the sensitivity of the imaging unit 22, and the aperture diameter of the aperture 1 so as to obtain an image with appropriate exposure.
- An image with inappropriate exposure is one in which the brightness of the image is brighter or darker than the desired brightness, and an image with appropriate exposure is an image with the desired brightness.
- the system control unit 50 can switch between enabling and disabling the approach detection function that detects the approach of an object to the digital camera 100 in response to user operation. In this way, the system control unit 50 can set one of a number of modes, including a mode in which the approach detection function is enabled and a mode in which the approach detection function is disabled, in response to user operation.
- the system control unit 50 determines whether the approach detection function is enabled. If the approach detection function is enabled, the process proceeds to S311, and if not, the process proceeds to S309.
- the system control unit 50 performs a proximity determination process to determine whether or not an object is approaching the digital camera 100 (the surface (lens surface) on which the lens unit 150 is attached). Details of the proximity determination process will be described later with reference to FIG. 4.
- the system control unit 50 determines whether or not an object is approaching the digital camera 100, based on the processing result of S311. If an object is approaching the digital camera 100, the process proceeds to S301; if not, the process proceeds to S309.
- FIG. 4 is a flowchart of the approach determination process performed by the digital camera 100 in S311 of FIG. 3. This process is realized by the system control unit 50 expanding a program stored in the non-volatile memory 56 into the system memory 52 and executing it.
- the system control unit 50 uses the image processing unit 24 to perform processing to detect a specific subject (e.g., a human, face, or eyes) from an image obtained by the imaging unit 22. Note that there are no particular limitations on the method of detecting a specific subject, so long as the specific subject can be detected from at least a portion of the imaging range of the digital camera 100.
- the system control unit 50 determines whether or not a specific subject has been detected. If a specific subject has been detected, the process proceeds to S402, and if not, the process proceeds to S403.
- the system control unit 50 determines that there is no object approaching the digital camera 100. If a specific subject (e.g., a human, face, or eye) is detected in S401, the system control unit 50 determines that there is no object approaching because the object is not so close as to cover the imaging range.
- a specific subject e.g., a human, face, or eye
- the system control unit 50 determines whether or not the autofocus process (AF process) was successful based on the calculation result of the image processing unit 24. If the AF process was successful (if the subject is in focus), the process proceeds to S406, and if not, the process proceeds to S404.
- AF process autofocus process
- the system control unit 50 uses the system timer 53 to measure the time during which the AF process has failed.
- the system control unit 50 determines whether the time during which the AF process has failed is longer than a threshold value t. The number of consecutive AF process failures may be used as the time during which the AF process has failed. If the time during which the AF process has failed is longer than the threshold value t, the process proceeds to S405; otherwise, the process proceeds to S402.
- the threshold value t may be a predetermined fixed value, or may be a value that can be changed by the user.
- the system control unit 50 determines that there is a subject approaching the digital camera 100. If the time during which AF processing has failed is longer than the threshold value t, an object continues to be close to the imaging range, so it is determined that there is a close subject. On the other hand, if the time during which AF processing has failed is shorter than the threshold value t, it is determined that there is no close subject, since it is possible that AF is temporarily unavailable, rather than the screen being darkened by blocking the shooting lens.
- the system control unit 50 detects the distance between the subject (the object imaged by the imaging unit 22) and the digital camera 100. There are no particular limitations on the method of detecting the distance, and various known techniques can be used to detect the distance. When detecting the distance, the position of the lens unit 150 may be used as the position of the digital camera 100. In S406, the system control unit 50 determines whether the distance between the subject and the digital camera 100 is shorter than a threshold value d1 based on the calculation result of the image processing unit 24. If the distance is shorter than the threshold value d1, the process proceeds to S410, and if not, the process proceeds to S407.
- the threshold value d1 may be a predetermined fixed value, or may be a value that can be changed by the user.
- the system control unit 50 determines whether the distance between the subject and the digital camera 100 is less than the threshold value d2 (>threshold value d1) based on the calculation result of the image processing unit 24. If the distance is less than the threshold value d2, the process proceeds to S409; otherwise, the process proceeds to S408.
- the threshold value d2 may be a predetermined fixed value, or may be a value that can be changed by the user.
- the system control unit 50 determines that no object is approaching the digital camera 100.
- the system control unit 50 determines whether the current distance (current calculation result) between the subject detected in S407 and the digital camera 100 is shorter than the previous distance (previous calculation result) (whether the distance has decreased). If the current distance is shorter than the previous distance, proceed to S410; if not, proceed to S408.
- the system control unit 50 determines that an object is approaching the digital camera 100.
- AE processing is stopped when an object approaching digital camera 100 is captured. Then, AE processing is resumed when an object that approached digital camera 100 and was blocking the shooting lens no longer blocks the shooting lens (for example, an object that was approaching within the imaging range moves out of the imaging range and is no longer captured, or an object that was approaching moves away from the imaging lens or digital camera 100).
- an object that approached digital camera 100 and was blocking the shooting lens no longer blocks the shooting lens (for example, an object that was approaching within the imaging range moves out of the imaging range and is no longer captured, or an object that was approaching moves away from the imaging lens or digital camera 100).
- the system control unit 50 may provide a predetermined notification to the user when AE processing is stopped.
- the predetermined notification may be, for example, a notification that AE processing has been stopped.
- the notification method There are no particular limitations on the notification method, and for example, the predetermined notification may be the display of an icon or a character string, the output of a sound, or the lighting of a lamp.
- the AE process may be switched between being executed and stopped depending on the result of the approach determination process, regardless of whether video is being shot. Even when an object approaching the digital camera 100 is imaged by the imaging unit 22, if the object is approaching the digital camera 100 outside a predetermined range that is part of the imaging range of the imaging unit 22, the AE process may not be stopped.
- the predetermined range is, for example, a range that is the target of the AE process (a range that is referenced in the AE process (sampling of brightness) and is set to the correct exposure).
- the predetermined range may be a range specified by the user.
- S401 Only the inside of the predetermined range may be referenced in S401, S403, S406, and S407.
- S401 it may be determined whether a specific subject has been detected inside the predetermined range.
- S402 it may be determined whether the focus is set inside the predetermined range.
- S406 and S407 the distance between the subject present within a predetermined range and the digital camera 100 may be compared with thresholds d1 and d2.
- system control unit 50 may be performed by a single piece of hardware, or multiple pieces of hardware may share the processing to control the entire device. The same applies to the various controls described above as being performed by the CPU 201.
- the present invention has been described as being applied to a digital camera, but this is not limited to this example, and the present invention can be applied to any imaging device that is capable of automatic exposure control.
- the present invention can be applied to personal computers, PDAs, mobile phone terminals, portable image viewers, printer devices, digital photo frames, music players, game consoles, e-book readers, etc.
- the present invention can also be applied to video players, display devices (including projection devices), tablet terminals, smartphones, AI speakers, home appliance devices, in-vehicle devices, etc.
- the present invention can also be realized by a process in which a program for implementing one or more of the functions of the above-described embodiments is supplied to a system or device via a network or a storage medium, and one or more processors in a computer of the system or device read and execute the program.
- the present invention can also be realized by a circuit (e.g., ASIC) that implements one or more of the functions.
- the disclosure of the present embodiment includes the following configuration, method, program, and medium.
- (Configuration 1) An imaging device, comprising: An imaging means; AE means for performing automatic exposure processing; The AE means stops the automatic exposure process when an object approaching the image capturing device is imaged by the image capturing means.
- (Configuration 2) The imaging device described in configuration 1, wherein the AE means stops the automatic exposure processing in response to an object approaching the imaging device within an imaging range of the imaging means, and after stopping the automatic exposure processing, resumes the automatic exposure processing in response to the object moving out of the imaging range or the object moving away from the imaging device.
- (Configuration 3) 3.
- the imaging device wherein the AE means stops the automatic exposure process when a distance between an object imaged by the imaging means and the imaging device is shorter than a first threshold value.
- Configuration 4 The imaging device according to any one of configurations 1 to 3, wherein the AE means stops the automatic exposure process when a distance between an object imaged by the imaging means and the imaging device is shorter than a second threshold value and the distance is decreasing.
- Configuration 5 The imaging device according to configuration 4, wherein the AE means does not stop the automatic exposure process when a distance between an object imaged by the imaging means and the imaging device is shorter than the second threshold value but the distance has not decreased.
- (Configuration 6) The imaging device according to any one of configurations 1 to 5, wherein the AE means executes the automatic exposure process when a distance between an object imaged by the imaging means and the imaging device is longer than a second threshold value.
- the imaging device has an AF unit for performing an autofocus process, The imaging apparatus according to any one of configurations 1 to 6, wherein the AE means stops the automatic exposure process when the time during which the autofocus process has failed is longer than a third threshold value.
- (Configuration 8) a detection unit for detecting a specific object from an imaging range of the imaging unit; 8. The imaging apparatus according to any one of configurations 1 to 7, wherein the AE means does not stop the automatic exposure process when the specific subject is detected by the detection means.
- the imaging apparatus according to any one of configurations 1 to 11, wherein the AE means does not stop the automatic exposure process when the imaging means is not taking a moving image.
- the imaging device according to any one of configurations 1 to 12, characterized in that even when an object approaching the imaging device is imaged by the imaging means, if the object is approaching the imaging device outside a predetermined range that is a part of the imaging range of the imaging means, the AE means does not stop the automatic exposure process.
- Configuration 14 13
- a control method for an imaging device comprising: an imaging step of performing imaging; An AE step for performing an automatic exposure process, The method for controlling an image capturing apparatus, wherein the AE step stops the automatic exposure process when an object approaching the image capturing apparatus is imaged in the imaging step.
- program A program for causing a computer to function as each of the means of the electronic device according to any one of configurations 1 to 14.
- Medium A computer-readable storage medium storing a program for causing a computer to function as each of the means of the electronic device according to any one of configurations 1 to 14.
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Abstract
Description
・タッチパネル70aにタッチしていなかった指やペンが新たにタッチパネル70aにタッチしたこと、すなわちタッチの開始(以下、タッチダウン(Touch-Down)と称する)
・タッチパネル70aを指やペンでタッチしている状態(以下、タッチオン(Touch-On)と称する)
・指やペンがタッチパネル70aをタッチしたまま移動していること(以下、タッチムーブ(Touch-Move)と称する)
・タッチパネル70aへタッチしていた指やペンがタッチパネル70aから離れた(リリースされた)こと、すなわちタッチの終了(以下、タッチアップ(Touch-Up)と称する)
・タッチパネル70aに何もタッチしていない状態(以下、タッチオフ(Touch-Off)と称する)
本発明は、上述の実施形態の1以上の機能を実現するプログラムを、ネットワーク又は記憶媒体を介してシステム又は装置に供給し、そのシステム又は装置のコンピュータにおける1つ以上のプロセッサーがプログラムを読出し実行する処理でも実現可能である。また、1以上の機能を実現する回路(例えば、ASIC)によっても実現可能である。
(構成1)
撮像装置であって、
撮像手段と、
自動露出処理を行うAE手段と
を有し、
前記AE手段は、前記撮像装置に接近した物体が前記撮像手段により撮像される場合に前記自動露出処理を停止する
ことを特徴とする撮像装置。
(構成2)
前記AE手段は、前記撮像手段による撮像範囲内で物体が前記撮像装置に接近したことに応じて前記自動露出処理を停止し、前記自動露出処理を停止した後、前記物体が前記撮像範囲外に移動した、又は、前記物体が前記撮像装置から離れたことに応じて、前記自動露出処理を再開する
ことを特徴とする構成1に記載の撮像装置。
(構成3)
前記AE手段は、前記撮像手段により撮像される物体と前記撮像装置との間の距離が第1の閾値よりも短い場合に、前記自動露出処理を停止する
ことを特徴とする構成1または2に記載の撮像装置。
(構成4)
前記AE手段は、前記撮像手段により撮像される物体と前記撮像装置との間の距離が第2の閾値よりも短く且つ当該距離が減少している場合に、前記自動露出処理を停止する
ことを特徴とする構成1~3のいずれかに記載の撮像装置。
(構成5)
前記AE手段は、前記撮像手段により撮像される物体と前記撮像装置との間の距離が前記第2の閾値よりも短くても当該距離が減少していない場合には、前記自動露出処理を停止しない
ことを特徴とする構成4に記載の撮像装置。
(構成6)
前記AE手段は、前記撮像手段により撮像される物体と前記撮像装置との間の距離が第2の閾値よりも長い場合には、前記自動露出処理を実行する
ことを特徴とする構成1~5のいずれかに記載の撮像装置。
(構成7)
オートフォーカス処理を行うAF手段をさらに有し、
前記AE手段は、前記オートフォーカス処理に失敗している時間が第3の閾値よりも長い場合に、前記自動露出処理を停止する
ことを特徴とする構成1~6のいずれかに記載の撮像装置。
(構成8)
前記撮像手段の撮像範囲から特定の被写体を検出する検出手段をさらに有し、
前記AE手段は、前記検出手段によって前記特定の被写体が検出される場合に、前記自動露出処理を停止しない
ことを特徴とする構成1~7のいずれかに記載の撮像装置。
(構成9)
前記特定の被写体は顔であることを特徴とする構成8に記載の撮像装置
(構成10)
ユーザ操作に応じて、前記撮像装置に接近した物体が撮像される場合に前記自動露出処理を停止する第1のモードと、前記撮像装置に接近した物体が撮像される場合であっても前記自動露出処理を停止しない第2のモードとを含む複数のモードのいずれかを設定する設定手段をさらに有する
ことを特徴とする構成1~9のいずれかに記載の撮像装置。
(構成11)
前記AE手段が前記自動露出処理を停止している場合に、所定の通知を行うように制御する制御手段をさらに有する
ことを特徴とする構成1~10のいずれかに記載の撮像装置。
(構成12)
前記撮像手段により動画を撮影していない場合に、前記AE手段は、前記自動露出処理を停止しない
ことを特徴とする構成1~11のいずれかに記載の撮像装置。
(構成13)
前記AE手段は、前記撮像装置に接近した物体が前記撮像手段により撮像される場合であっても、当該物体が、前記撮像手段の撮像範囲の一部である所定の範囲の外側で前記撮像装置に接近している場合には、前記自動露出処理を停止しない
ことを特徴とする構成1~12のいずれかに記載の撮像装置。
(構成14)
前記所定の範囲は、前記自動露出処理の対象の範囲である
ことを特徴とする構成12に記載の撮像装置。
(方法)
撮像装置の制御方法であって、
撮像を行う撮像ステップと、
自動露出処理を行うAEステップと
を有し、
前記AEステップは、前記撮像装置に接近した物体が前記撮像ステップにおいて撮像される場合に前記自動露出処理を停止する
ことを特徴とする撮像装置の制御方法。
(プログラム)
コンピュータを、構成1~14のいずれかに記載の電子機器の各手段として機能させるためのプログラム。
(媒体)
コンピュータを、構成1~14のいずれかに記載の電子機器の各手段として機能させるためのプログラムを格納したコンピュータが読み取り可能な記憶媒体。
Claims (17)
- 撮像装置であって、
撮像手段と、
自動露出処理を行うAE手段と
を有し、
前記AE手段は、前記撮像装置に接近した物体が前記撮像手段により撮像される場合に前記自動露出処理を停止する
ことを特徴とする撮像装置。 - 前記AE手段は、前記撮像手段による撮像範囲内で物体が前記撮像装置に接近したことに応じて前記自動露出処理を停止し、前記自動露出処理を停止した後、前記物体が前記撮像範囲外に移動した、又は、前記物体が前記撮像装置から離れたことに応じて、前記自動露出処理を再開する
ことを特徴とする請求項1に記載の撮像装置。 - 前記AE手段は、前記撮像手段により撮像される物体と前記撮像装置との間の距離が第1の閾値よりも短い場合に、前記自動露出処理を停止する
ことを特徴とする請求項1に記載の撮像装置。 - 前記AE手段は、前記撮像手段により撮像される物体と前記撮像装置との間の距離が第2の閾値よりも短く且つ当該距離が減少している場合に、前記自動露出処理を停止する
ことを特徴とする請求項1に記載の撮像装置。 - 前記AE手段は、前記撮像手段により撮像される物体と前記撮像装置との間の距離が前記第2の閾値よりも短くても当該距離が減少していない場合には、前記自動露出処理を停止しない
ことを特徴とする請求項4に記載の撮像装置。 - 前記AE手段は、前記撮像手段により撮像される物体と前記撮像装置との間の距離が第2の閾値よりも長い場合には、前記自動露出処理を実行する
ことを特徴とする請求項1に記載の撮像装置。 - オートフォーカス処理を行うAF手段をさらに有し、
前記AE手段は、前記オートフォーカス処理に失敗している時間が第3の閾値よりも長い場合に、前記自動露出処理を停止する
ことを特徴とする請求項1に記載の撮像装置。 - 前記撮像手段の撮像範囲から特定の被写体を検出する検出手段をさらに有し、
前記AE手段は、前記検出手段によって前記特定の被写体が検出される場合に、前記自動露出処理を停止しない
ことを特徴とする請求項1に記載の撮像装置。 - 前記特定の被写体は顔である
ことを特徴とする請求項8に記載の撮像装置。 - ユーザ操作に応じて、前記撮像装置に接近した物体が撮像される場合に前記自動露出処理を停止する第1のモードと、前記撮像装置に接近した物体が撮像される場合であっても前記自動露出処理を停止しない第2のモードとを含む複数のモードのいずれかを設定する設定手段をさらに有する
ことを特徴とする請求項1に記載の撮像装置。 - 前記AE手段が前記自動露出処理を停止している場合に、所定の通知を行うように制御する制御手段をさらに有する
ことを特徴とする請求項1に記載の撮像装置。 - 前記撮像手段により動画を撮影していない場合に、前記AE手段は、前記自動露出処理を停止しない
ことを特徴とする請求項1に記載の撮像装置。 - 前記AE手段は、前記撮像装置に接近した物体が前記撮像手段により撮像される場合であっても、当該物体が、前記撮像手段の撮像範囲の一部である所定の範囲の外側で前記撮像装置に接近している場合には、前記自動露出処理を停止しない
ことを特徴とする請求項1に記載の撮像装置。 - 前記所定の範囲は、前記自動露出処理の対象の範囲である
ことを特徴とする請求項13に記載の撮像装置。 - 撮像装置の制御方法であって、
撮像を行う撮像ステップと、
自動露出処理を行うAEステップと
を有し、
前記AEステップは、前記撮像装置に接近した物体が前記撮像ステップにおいて撮像される場合に前記自動露出処理を停止する
ことを特徴とする撮像装置の制御方法。 - コンピュータを、請求項1~14のいずれか1項に記載の撮像装置の各手段として機能させるためのプログラム。
- コンピュータを、請求項1~14のいずれか1項に記載の撮像装置の各手段として機能させるためのプログラムを格納したコンピュータが読み取り可能な記憶媒体。
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| CN202480038957.7A CN121312146A (zh) | 2023-06-12 | 2024-03-13 | 摄像装置、摄像装置的控制方法、程序和存储介质 |
| EP24823048.4A EP4727147A1 (en) | 2023-06-12 | 2024-03-13 | Imaging device, method for controlling imaging device, program, and storage medium |
| US19/410,456 US20260122335A1 (en) | 2023-06-12 | 2025-12-05 | Imaging device, method for controlling imaging device, and non-transitory computer readable medium |
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| JP2023096364A JP2024177941A (ja) | 2023-06-12 | 2023-06-12 | 撮像装置、撮像装置の制御方法、プログラム、および記憶媒体 |
| JP2023-096364 | 2023-06-12 |
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| US19/410,456 Continuation US20260122335A1 (en) | 2023-06-12 | 2025-12-05 | Imaging device, method for controlling imaging device, and non-transitory computer readable medium |
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| PCT/JP2024/009717 Ceased WO2024257425A1 (ja) | 2023-06-12 | 2024-03-13 | 撮像装置、撮像装置の制御方法、プログラム、および記憶媒体 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20260122335A1 (ja) |
| EP (1) | EP4727147A1 (ja) |
| JP (1) | JP2024177941A (ja) |
| CN (1) | CN121312146A (ja) |
| WO (1) | WO2024257425A1 (ja) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4960216A (ja) * | 1972-10-07 | 1974-06-11 | ||
| JP2005037683A (ja) * | 2003-07-14 | 2005-02-10 | Olympus Corp | 顕微鏡用撮像装置とその制御方法、及び制御方法に係るプログラム |
| JP2007027967A (ja) * | 2005-07-13 | 2007-02-01 | Fujifilm Holdings Corp | 撮影装置 |
| JP2008083243A (ja) * | 2006-09-26 | 2008-04-10 | Fujifilm Corp | 撮影装置及び露出制御方法 |
| JP2011065012A (ja) | 2009-09-18 | 2011-03-31 | Nec Casio Mobile Communications Ltd | 撮像装置及びプログラム |
| JP2023096364A (ja) | 2021-12-27 | 2023-07-07 | ブラザー工業株式会社 | シート搬送装置、画像記録装置及びロール体の交換方法 |
-
2023
- 2023-06-12 JP JP2023096364A patent/JP2024177941A/ja active Pending
-
2024
- 2024-03-13 CN CN202480038957.7A patent/CN121312146A/zh active Pending
- 2024-03-13 EP EP24823048.4A patent/EP4727147A1/en active Pending
- 2024-03-13 WO PCT/JP2024/009717 patent/WO2024257425A1/ja not_active Ceased
-
2025
- 2025-12-05 US US19/410,456 patent/US20260122335A1/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4960216A (ja) * | 1972-10-07 | 1974-06-11 | ||
| JP2005037683A (ja) * | 2003-07-14 | 2005-02-10 | Olympus Corp | 顕微鏡用撮像装置とその制御方法、及び制御方法に係るプログラム |
| JP2007027967A (ja) * | 2005-07-13 | 2007-02-01 | Fujifilm Holdings Corp | 撮影装置 |
| JP2008083243A (ja) * | 2006-09-26 | 2008-04-10 | Fujifilm Corp | 撮影装置及び露出制御方法 |
| JP2011065012A (ja) | 2009-09-18 | 2011-03-31 | Nec Casio Mobile Communications Ltd | 撮像装置及びプログラム |
| JP2023096364A (ja) | 2021-12-27 | 2023-07-07 | ブラザー工業株式会社 | シート搬送装置、画像記録装置及びロール体の交換方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| EP4727147A1 (en) | 2026-04-15 |
| CN121312146A (zh) | 2026-01-09 |
| JP2024177941A (ja) | 2024-12-24 |
| US20260122335A1 (en) | 2026-04-30 |
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