CN118859552B - A three-dimensional optical display system and method for realizing LED screen based on photon film - Google Patents
A three-dimensional optical display system and method for realizing LED screen based on photon film Download PDFInfo
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Abstract
The invention relates to the field of optics and discloses a three-dimensional optical display system and a three-dimensional optical display method for realizing an LED screen based on a photon film, wherein the system comprises a multi-view layout module, a multi-view display module and a multi-view display module, wherein the multi-view layout module is used for analyzing the three-dimensional effect requirement of the LED screen and constructing multi-view layout of the photon film; the system comprises an optical system construction module, an optical system model construction module, a display image stereo optimization module and a display image stereo optimization module, wherein the optical system construction module is used for determining an optical element of an LED screen, configuring a cooperative work network of the optical element, a photon film and the LED screen, constructing an optical system of the optical element, the photon film and the LED screen, the optical system model construction module is used for constructing an optical system model of the optical system, the stereo image construction module is used for identifying a screen original image corresponding to the LED screen, dividing the screen original image into image viewpoints and constructing a stereo image of the screen original image, and the display image stereo optimization module is used for tracking a user viewpoint of a target user and adjusting element parameters of the optical system corresponding to the optical element to obtain the target stereo display image of the LED screen. The invention aims to improve the three-dimensional optical display effect of the LED screen.
Description
Technical Field
The invention relates to the field of optics, in particular to a three-dimensional optical display system and method for realizing an LED screen based on a photon film.
Background
The three-dimensional optical display of the LED screen is realized by an LED screen technology, and a display mode capable of generating a three-dimensional visual effect is adopted. The display mode utilizes the binocular parallax principle of people, and under a certain viewing distance and angle, a viewer can see images on a screen to generate depth sense and stereoscopic sense, so that a three-dimensional effect is displayed.
At present, three-dimensional optical display of an LED screen is mainly realized by blocking different pictures seen by left and right eyes respectively through an active 3D glasses technology, so that a three-dimensional effect is created.
Disclosure of Invention
The invention provides a three-dimensional optical display system and a three-dimensional optical display method for realizing an LED screen based on a photon film, and the three-dimensional optical display system and the three-dimensional optical display method mainly aim at improving the three-dimensional optical display effect of the LED screen.
In order to achieve the above object, the three-dimensional optical display system for realizing an LED screen based on a photonic film provided by the present invention is characterized in that the three-dimensional optical display system for realizing an LED screen based on a photonic film includes:
The multi-view layout module is used for acquiring an application scene and a target user of the LED screen, analyzing the stereoscopic effect requirement of the LED screen based on the application scene and the target user, identifying the microstructure of a preset photon film, and constructing the multi-view layout of the photon film based on the microstructure and the stereoscopic effect requirement;
An optical system construction module, configured to determine an optical element of the LED screen based on the multi-viewpoint layout, configure a collaborative work network of the optical element, the photonic film, and the LED screen, and construct an optical system of the optical element, the photonic film, and the LED screen based on the collaborative work network;
An optical system model building module for building an optical system model of the optical system;
the stereoscopic image construction module is used for identifying a screen original image corresponding to the LED screen, dividing the screen original image into image viewpoints based on the optical system model, and constructing a stereoscopic image of the screen original image based on the image viewpoints;
And the display image stereoscopic optimization module is used for tracking the user viewpoint of the target user, and adjusting element parameters of optical elements corresponding to the optical system based on the user viewpoint and the stereoscopic image to obtain the target stereoscopic display image of the LED screen.
Optionally, the analyzing, based on the application scene and the target user, the stereoscopic effect requirement of the LED screen includes:
collecting user expectations of the target user;
identifying application scene characteristics of the application scene;
Determining the stereoscopic effect type of the LED screen based on the user expectations and the application scene characteristics;
Analyzing the viewpoint number and viewpoint distribution of the stereoscopic effect type;
And determining the stereoscopic effect requirement of the LED screen based on the stereoscopic effect type, the viewpoint number and the viewpoint distribution.
Optionally, the constructing the multi-view layout of the photonic film based on the microstructure and the stereoscopic effect requirement includes:
analyzing the microstructure characteristics of the microstructure;
determining the light control capability of the microstructure based on the microstructure characteristics, wherein the light control capability comprises a light propagation direction and a light focusing effect;
Determining an initial multi-view layout of the photonic film based on the microstructure features and the light control capability;
calculating the layout effectiveness of the initial multi-view layout;
and when the layout effectiveness meets a preset effectiveness threshold, constructing the multi-view layout of the photon film.
Optionally, the calculating the layout validity of the initial multi-view layout includes:
analyzing a layout effective factor of the initial multi-view layout, wherein the layout effective factor comprises parallax consistency, view coverage, stereoscopic depth feeling and viewing comfort;
determining an effective factor weight of the layout effective factor;
based on the layout validity factor and the validity factor weight, the layout validity of the initial multi-view layout is calculated using the following formula:
ρ=(DDσ*EEσ*GGσ*HHσ)/(D+E+G+H)
Wherein ρ represents the layout effectiveness of the initial multi-view layout, D represents the parallax uniformity of the initial multi-view layout, E represents the view coverage of the initial multi-view layout, G represents the stereoscopic impression of the initial multi-view layout, H represents the viewing comfort of the initial multi-view layout, D σ represents the weight of the parallax uniformity, E σ represents the weight of the view coverage, G σ represents the weight of the stereoscopic impression, and H σ represents the weight of the viewing comfort.
Optionally, the configuring the optical element, the photonic film, and the co-operating network of the LED screen includes:
Analyzing the cooperative working modes of the optical element, the photon film and the LED screen;
determining connection modes and control logic of the optical element, the photon film and the LED screen based on the cooperative working mode;
determining signal transmission schemes of the optical element, the photon film and the LED screen through the connection mode and the control logic;
And configuring a collaborative work network of the optical element, the photon film and the LED screen based on the connection mode, the control logic and the signal transmission scheme.
Optionally, the constructing an optical system model of the optical system includes:
determining an optical system demand of the optical system;
selecting simulation software of the optical system based on the optical system requirements;
establishing a simulation geometric model of the optical system through the simulation software;
defining a simulation scene of the simulation geometric model, and configuring simulation parameters of the simulation scene;
simulating light propagation of the optical system based on the simulation scene and the simulation parameters;
analyzing the optical performance of the optical system based on the light propagation;
And carrying out parameter optimization on the simulation geometric model through the optical performance to obtain the optical system model.
Optionally, the dividing the screen original image into image viewpoints based on the optical system model includes:
integrating the optical system model into preset image processing software to obtain an integrated optical system model;
Determining the viewpoint direction and the viewpoint position of the screen original image based on the integrated optical system model;
Calculating the viewpoint parallax of the screen original image based on the viewpoint direction and the viewpoint position;
the screen original image is segmented into image viewpoints based on the viewpoint parallaxes.
Optionally, the calculating the viewpoint parallax of the screen original image based on the viewpoint direction and the viewpoint position includes:
Based on the viewpoint direction and the viewpoint position, determining a viewpoint image distance and a viewpoint ray incidence angle of a target user corresponding to the screen original image and the screen original image;
based on the viewpoint image distance and the viewpoint ray incidence angle, the viewpoint parallax of the screen original image is calculated by using the following formula:
Wherein σ represents the viewpoint parallax of the screen original image, F r represents the viewpoint image distance of the screen original image corresponding to the left eye viewpoint of the target user, F e represents the viewpoint image distance of the screen original image corresponding to the right eye viewpoint of the target user, θ r represents the viewpoint light incidence angle of the screen original image corresponding to the left eye viewpoint of the target user, θ e represents the viewpoint light incidence angle of the screen original image corresponding to the right eye viewpoint of the target user, and cos represents the cosine function.
Optionally, the tracking the user viewpoint of the target user includes:
Acquiring a head moving image of the target user by using a preset camera system;
identifying image feature points of the head moving image;
Identifying characteristic point displacement and rotation angles of the image characteristic points;
based on the feature point displacement and the rotation angle, a head motion vector of the target user is calculated using the following formula:
Wherein, Representing the head motion vector of the target user, x ω-xω-1 representing the displacement of the image feature point on the x-axis, y ω representing the position of the omega-1 frame of the image feature point on the x-axis, x ω-1 representing the position of the omega-1 frame of the image feature point, y ω-yω-1 representing the displacement of the image feature point on the y-axis, y ω representing the position of the omega-1 frame of the image feature point on the y-axis, y ω-1 representing the position of the omega-1 frame of the image feature point,Representing the rotation angle of the image feature point on the x-axis,Representing the rotation angle of the image feature point on the y-axis,Representing the rotation angle of the image feature point on the z axis;
Determining a head movement track of the target user based on the head movement vector;
analyzing the head gesture of the target user based on the head movement track;
and determining the user viewpoint of the target user through the head gesture.
In order to solve the problems, the invention also provides a three-dimensional stereoscopic optical display method for realizing the LED screen based on the photon film, which comprises the following steps:
Acquiring an application scene and a target user of an LED screen, analyzing the stereoscopic effect requirement of the LED screen based on the application scene and the target user, identifying the microstructure of a preset photon film, and constructing the multi-view layout of the photon film based on the microstructure and the stereoscopic effect requirement;
determining an optical element of the LED screen based on the multi-view layout, configuring a cooperative work network of the optical element, the photon film and the LED screen, and constructing an optical system of the optical element, the photon film and the LED screen based on the cooperative work network;
constructing an optical system model of the optical system;
identifying a screen original image corresponding to the LED screen, dividing the screen original image into image viewpoints based on the optical system model, and constructing a stereoscopic image of the screen original image based on the image viewpoints;
and tracking the user viewpoint of the target user, and adjusting element parameters of optical elements corresponding to the optical system based on the user viewpoint and the stereoscopic image to obtain the target stereoscopic display image of the LED screen.
The invention can ensure that a system can meet requirements of an application scene and a target user by analyzing the stereoscopic effect requirement of the LED screen based on the application scene and the target user, can adapt to watching habit and comfort level of the target user by constructing the multi-view layout of the photon film based on the microstructure and the stereoscopic effect requirement, can provide basis for later stereoscopic effect modification by configuring the optical element, the photon film and a collaborative work network of the LED screen, further, can divide an original image of the screen into image viewpoints based on an optical system model to serve as a basis for later stereoscopic image construction, and finally, can adjust element parameters of the optical element corresponding to the optical system based on the user viewpoints and the stereoscopic image to obtain a target stereoscopic display image of the LED screen, so that the stereoscopic effect of the user watching the image can be improved. Therefore, the invention can improve the three-dimensional optical display effect of the LED screen.
Drawings
FIG. 1 is a functional block diagram of a three-dimensional optical display system for realizing an LED screen based on a photon film according to an embodiment of the present invention;
Fig. 2 is a schematic flow chart of a three-dimensional optical display method for realizing an LED screen based on a photonic film according to an embodiment of the present invention.
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In addition, the sequence of steps in the method embodiments described below is only an example and is not strictly limited.
In practice, a server device deployed by a three-dimensional optical display system for implementing an LED screen based on a photonic film may be composed of one or more devices. The three-dimensional optical display system for realizing the LED screen based on the photon film can be realized as a service instance, a virtual machine and hardware equipment. For example, the photonic film-based three-dimensional stereoscopic optical display system implementing an LED screen may be implemented as a service instance deployed on one or more devices in a cloud node. In short, the optical display system can be understood as a software deployed on a cloud node, and is used for providing services for realizing three-dimensional optical display of the LED screen based on the photon film for each user side. Or the three-dimensional optical display system for realizing the LED screen based on the photon film can also be realized as a virtual machine deployed on one or more devices in the cloud node. The virtual machine is provided with application software for managing each user side. Or the three-dimensional optical display system for realizing the LED screen based on the photon film can also be realized as a service end formed by a plurality of hardware devices of the same or different types, and one or more hardware devices are arranged for providing three-dimensional optical display service for realizing the LED screen based on the photon film for each user end.
In the implementation form, the three-dimensional optical display system for realizing the LED screen based on the photon film is mutually adapted to the user side. The method comprises the steps of enabling a three-dimensional optical display system of an LED screen to be used as an application installed on a cloud service platform based on a photon film, enabling a user side to be used as a client side for establishing communication connection with the application, enabling the three-dimensional optical display system of the LED screen to be used as a website based on the photon film, enabling the user side to be used as a webpage, and enabling the three-dimensional optical display system of the LED screen to be used as the cloud service platform based on the photon film, and enabling the user side to be used as an applet in instant messaging application.
Referring to fig. 1, a functional block diagram of a three-dimensional optical display system for realizing an LED screen based on a photonic film according to an embodiment of the present invention is shown.
The three-dimensional optical display system 200 for realizing the LED screen based on the photon film can be arranged in a cloud server, and can be used as one or more service devices, can be used as an application to be installed on the cloud (such as a server, a server cluster and the like of an optical display operator), or can be developed into a website in an implementation form. According to the realized functions, the three-dimensional optical display system 200 for realizing the LED screen based on the photon film comprises a multi-view layout module 101, an optical system construction module 102, an optical system model construction module 103, a stereoscopic image construction module 104 and a display image stereoscopic optimization module 105. In the embodiment of the invention, in the tracking of realizing three-dimensional stereoscopic optical display of the LED screen based on the photon film, each module can be independently realized and called with other modules. The call can be understood that a certain module can be connected with a plurality of modules of another type and provide corresponding services for the plurality of modules connected with the certain module, and in the three-dimensional optical display system for realizing the LED screen based on the photon film, the application range of the three-dimensional optical display framework for realizing the LED screen based on the photon film can be adjusted by adding the modules and directly calling the modules without modifying program codes, so that the cluster type horizontal expansion is realized, and the purpose of rapidly and flexibly expanding the three-dimensional optical display system for realizing the LED screen based on the photon film is achieved. In practical applications, the modules may be disposed in the same device or different devices, or may be service instances disposed in virtual devices, for example, in a cloud server.
The following description is made with reference to specific embodiments, respectively, of each component part of a three-dimensional stereoscopic optical display system for realizing an LED screen based on a photonic film and a specific workflow:
the multi-view layout module 101 is configured to obtain an application scene and a target user of an LED screen, analyze a stereoscopic effect requirement of the LED screen based on the application scene and the target user, identify a microstructure of a preset photon film, and construct a multi-view layout of the photon film based on the microstructure and the stereoscopic effect requirement.
It should be explained that the LED screen refers to an electronic display screen using a Light Emitting Diode (LED) as a display unit, and the application scenario refers to a specific environment and occasion in which the LED screen will be used, for example, it may be used for outdoor billboards, mall shows, movie theatres, home entertainment centers, education institutions, exhibition halls, etc., and the target user refers to an intended user or audience of the system. For example, the target user may be an average consumer, a professional audience, a student, an educator, an enterprise client, or the like.
According to the invention, based on the application scene and the target user, the stereoscopic effect requirement of the LED screen is analyzed, so that the system can be ensured to meet the requirements of the application scene and the target user. The stereoscopic effect requirements refer to specific parameters and requirements of stereoscopic effects to be realized by the LED screen, and the requirements include viewpoint number, viewpoint distribution, depth, hierarchy, motion sense and the like of the stereoscopic effects.
In detail, the analyzing, based on the application scene and the target user, the stereoscopic effect requirement of the LED screen includes:
collecting user expectations of the target user;
identifying application scene characteristics of the application scene;
Determining the stereoscopic effect type of the LED screen based on the user expectations and the application scene characteristics;
Analyzing the viewpoint number and viewpoint distribution of the stereoscopic effect type;
And determining the stereoscopic effect requirement of the LED screen based on the stereoscopic effect type, the viewpoint number and the viewpoint distribution.
The user expectations refer to expectations and preferences of target users on the stereoscopic effect of the LED screen, wherein requirements on stereoscopic depth, image quality, viewing comfort, interactivity and the like are met, the application scene characteristics refer to characteristics of specific environments where the LED screen is to be used, such as viewing distance, ambient light, number of audiences, use frequency and the like, the characteristics influence the design and implementation of the stereoscopic effect, the stereoscopic effect types refer to determining specific stereoscopic effect which needs to be implemented by the LED screen, such as depth feeling, layering sense, movement sense and the like according to the user expectations and the application scene characteristics, the number of viewpoints required in the stereoscopic effect of the number of viewpoints, namely, the number of independent viewpoints which needs to be provided by the LED screen when the audiences watch at different angles and positions, and the arrangement and distribution of viewpoints in the stereoscopic effect of the viewpoint distribution determine at which angles and positions the audiences can see different images, so that the stereoscopic effect is generated.
Further, the application scene features identifying the application scene may be analyzed by considering environmental factors of the application scene, such as light, temperature, humidity, viewing distance, and the like.
It should be explained that the photonic film refers to a special film material, which controls light through its microstructure to realize stereoscopic display effect, and the microstructure refers to a microstructure designed on the photonic film, including structures such as a lens array, a grating, a waveguide, and a liquid crystal microstructure.
The multi-view layout for constructing the photon film based on the microstructure and the stereoscopic effect requirement can adapt to the watching habit and comfort level of a target user. Wherein the multi-view layout refers to a view layout that allows viewers to see different images from a plurality of different angles and positions.
In detail, the constructing the multi-view layout of the photonic film based on the microstructure and the stereoscopic effect requirement includes:
analyzing the microstructure characteristics of the microstructure;
determining the light control capability of the microstructure based on the microstructure characteristics, wherein the light control capability comprises a light propagation direction and a light focusing effect;
Determining an initial multi-view layout of the photonic film based on the microstructure features and the light control capability;
calculating the layout effectiveness of the initial multi-view layout;
and when the layout effectiveness meets a preset effectiveness threshold, constructing the multi-view layout of the photon film.
The microstructure features are unique attributes of a microstructure on a photon film, such as a shape of a lens, periodicity of a grating, phase change characteristics of liquid crystal and the like, the light propagation direction refers to a propagation path and direction of light in the photon film, the refraction and reflection conditions include when the light passes through the microstructure, the light focusing effect refers to focusing degree of the light after the light passes through the microstructure, namely focusing effect of the light in a specific direction, the initial multi-view layout refers to a multi-view layout scheme which is preliminarily determined based on the microstructure features and light control capability, the number and distribution of view points are determined, the layout effectiveness refers to effects of the multi-view layout in realizing a stereoscopic effect, including a parallax size, a stereoscopic effect and the like, and the effectiveness threshold refers to a preset standard for judging whether the multi-view layout meets the requirement of the stereoscopic effect.
Further, the calculating the layout validity of the initial multi-view layout includes:
analyzing a layout effective factor of the initial multi-view layout, wherein the layout effective factor comprises parallax consistency, view coverage, stereoscopic depth feeling and viewing comfort;
determining an effective factor weight of the layout effective factor;
based on the layout validity factor and the validity factor weight, the layout validity of the initial multi-view layout is calculated using the following formula:
ρ=(DDσ*EEσ*GGσ*HHσ)/(D+E+G+H)
Wherein ρ represents the layout effectiveness of the initial multi-view layout, D represents the parallax uniformity of the initial multi-view layout, E represents the view coverage of the initial multi-view layout, G represents the stereoscopic impression of the initial multi-view layout, H represents the viewing comfort of the initial multi-view layout, D σ represents the weight of the parallax uniformity, E σ represents the weight of the view coverage, G σ represents the weight of the stereoscopic impression, and H σ represents the weight of the viewing comfort.
The parallax consistency refers to whether the parallax between the images seen by the left eye and the right eye on different viewpoints is consistent in the multi-viewpoint layout. The higher the parallax consistency, the more stable the stereoscopic effect is, and the better the viewer experience is, and the view coverage rate refers to the proportion of the range of the viewer view that can be covered by the multi-view layout. The higher the view coverage, which means that the multi-view layout can satisfy the viewing needs of more viewers, and the stereoscopic depth sensation is the depth sensation of the stereoscopic effect generated by the multi-view layout. The higher the stereoscopic depth feeling is, the more obvious the stereoscopic effect is, the more immersion is experienced by the audience, and the viewing comfort degree refers to the comfort degree of the audience when viewing the stereoscopic image. The higher the viewing comfort, the more pleasant the viewer experience, and the effective factor weight refers to the assigned weight of four factors, namely, parallax consistency, viewing angle coverage, stereoscopic depth perception, and viewing comfort, according to the importance level when calculating the layout effectiveness.
The optical system construction module 102 is configured to determine an optical element of the LED panel based on the multi-view layout, configure a cooperative work network of the optical element, the photonic film, and the LED panel, and construct an optical system of the optical element, the photonic film, and the LED panel based on the cooperative work network.
It should be noted that the optical element includes a lens, a mirror, a grating, and the like.
The invention is provided with the optical element, the photon film and the collaborative work network of the LED screen, which can provide basis for the later three-dimensional effect modification. The collaborative work network is a network which is used for realizing the requirement of the target by cooperating the optical element, the photon film and the LED screen.
In detail, the collaborative work network for configuring the optical element, the photon film and the LED screen includes:
Analyzing the cooperative working modes of the optical element, the photon film and the LED screen;
determining connection modes and control logic of the optical element, the photon film and the LED screen based on the cooperative working mode;
determining signal transmission schemes of the optical element, the photon film and the LED screen through the connection mode and the control logic;
And configuring a collaborative work network of the optical element, the photon film and the LED screen based on the connection mode, the control logic and the signal transmission scheme.
The cooperative working mode refers to a mode of how an optical element, a photon film and an LED screen work cooperatively in a three-dimensional display system, including functions, performances and interaction modes of the optical element, the photon film and the LED screen, the connection mode refers to a physical connection mode among the optical element, the photon film and the LED screen, including interfaces, cables, connectors and the like, the control logic refers to a logic of how electronic signals and software programs control and coordinate among components in the system to ensure that the components work in a preset mode, and the signal transmission scheme refers to a transmission mode of signals in the system, including schemes of signal types, transmission paths, transmission speeds, reliability and the like.
Further, the determining, by the connection mode and the control logic, the signal transmission schemes of the optical element, the photonic film and the LED screen may be implemented by digital signal processing technology, high-speed communication interface, and the like.
The optical system model building module 103 is configured to build an optical system model of the optical system.
The invention can better understand the performance of the optical system by constructing the optical system model of the optical system, thereby providing basis for later imaging.
In detail, the constructing an optical system model of the optical system includes:
determining an optical system demand of the optical system;
selecting simulation software of the optical system based on the optical system requirements;
establishing a simulation geometric model of the optical system through the simulation software;
defining a simulation scene of the simulation geometric model, and configuring simulation parameters of the simulation scene;
simulating light propagation of the optical system based on the simulation scene and the simulation parameters;
analyzing the optical performance of the optical system based on the light propagation;
And carrying out parameter optimization on the simulation geometric model through the optical performance to obtain the optical system model.
The optical System requirements refer to design targets and performance indexes such as focal length, angle of view, resolution, distortion and the like which are required to be met by the optical System, the simulation software refers to software tools such as Zemax, opt i systems, li ghtToo l s and the like for simulating and analyzing the performance of the optical System, the simulation geometric model refers to a geometric layout model which is built in the simulation software and comprises all optical elements (such as lenses, reflectors, gratings and the like), the simulation scene refers to environments and conditions of light propagation which are set in the simulation software and comprise a light source position, an observer position, an imaging surface position and the like, the simulation parameters refer to parameters such as focal length, radius, refractive index and the like of the optical elements defined in the simulation scene, the light propagation refers to the process that light rays simulated in the simulation software start from a light source, pass through the optical elements and finally reach an imaging surface, and the optical System model refers to a simulation model of the performance of the optical System which is obtained through simulation analysis, wherein the simulation parameters comprise a light propagation path, a focusing effect, imaging quality and the like.
Further, the establishing of the simulation geometric model of the optical system through the simulation software can be realized through geometric optics, fluctuation optics or holographic optics and the like.
The stereoscopic image construction module 104 is configured to identify a screen original image corresponding to the LED screen, divide the screen original image into image viewpoints based on the optical system model, and construct a stereoscopic image of the screen original image based on the image viewpoints.
It should be explained that the screen original image refers to an initial image displayed on the LED screen, that is, an image which has not undergone any stereoscopic effect processing.
The invention is based on the optical system model, and the screen original image is divided into image viewpoints which are used as a basis for constructing a stereoscopic image in the later stage. Wherein the image viewpoint refers to an image at a specific position on a screen, which represents the image content seen when viewed from a specific viewing angle in a stereoscopic display system.
In detail, the dividing the screen original image into image viewpoints based on the optical system model includes:
integrating the optical system model into preset image processing software to obtain an integrated optical system model;
Determining the viewpoint direction and the viewpoint position of the screen original image based on the integrated optical system model;
Calculating the viewpoint parallax of the screen original image based on the viewpoint direction and the viewpoint position;
the screen original image is segmented into image viewpoints based on the viewpoint parallaxes.
The integrated optical system model is a software tool capable of processing optical related data by combining the optical system model with image processing software, the image processing software is a software tool used for processing and analyzing image data, such as a tool like a G < I > MP, an Adobe Photoshop, an ImageJ and the like, the viewpoint direction is a light ray propagation direction corresponding to each viewpoint in the optical system, the directions determine the difference of images seen by left and right eyes and are the key for generating a stereoscopic effect, the viewpoint position is the position of each viewpoint relative to other viewpoints in the optical system, the determination of the viewpoint position is helpful for calculating the parallax between the images seen by the left and right eyes in the optical system and dividing the original images, the parallax is the basis for realizing stereoscopic display, and the difference of each viewpoint image can be determined by calculating the parallax.
Further, the calculating the viewpoint parallax of the screen original image based on the viewpoint direction and the viewpoint position includes:
Based on the viewpoint direction and the viewpoint position, determining a viewpoint image distance and a viewpoint ray incidence angle of a target user corresponding to the screen original image and the screen original image;
based on the viewpoint image distance and the viewpoint ray incidence angle, the viewpoint parallax of the screen original image is calculated by using the following formula:
Wherein σ represents the viewpoint parallax of the screen original image, F r represents the viewpoint image distance of the screen original image corresponding to the left eye viewpoint of the target user, F e represents the viewpoint image distance of the screen original image corresponding to the right eye viewpoint of the target user, θ r represents the viewpoint light incidence angle of the screen original image corresponding to the left eye viewpoint of the target user, θ e represents the viewpoint light incidence angle of the screen original image corresponding to the right eye viewpoint of the target user, and cos represents the cosine function.
The viewpoint image distance refers to the distance between an image and eyes seen by a left eye viewpoint and a right eye viewpoint respectively in a stereoscopic display system, the viewpoint ray incidence angle refers to the angle when rays enter a left eye or a right eye from a specific point on a screen, the right eye viewpoint refers to the position of the right eye in the stereoscopic display system, and the left eye viewpoint refers to the position of the left eye in the stereoscopic display system.
It is to be explained that the stereoscopic image refers to an image having a sense of depth created by simulating left-right eye parallax viewed by the human eye. In detail, the stereoscopic image may be combined into a stereoscopic image with image viewpoints by software such as 3D Studio Max, blender, etc.
The display image stereo optimization module 105 is configured to track a user viewpoint of the target user, and adjust element parameters of optical elements corresponding to the optical system based on the user viewpoint and the stereo image, so as to obtain a target stereo display image of the LED screen.
The invention uses the user viewpoint of the target user as the basis for the later-stage stereoscopic optimization. Wherein, the user viewpoint refers to the position and the orientation of the eyes of the user in the three-dimensional space.
In detail, the tracking the user viewpoint of the target user includes:
Acquiring a head moving image of the target user by using a preset camera system;
identifying image feature points of the head moving image;
Identifying characteristic point displacement and rotation angles of the image characteristic points;
based on the feature point displacement and the rotation angle, a head motion vector of the target user is calculated using the following formula:
Wherein, Representing the head motion vector of the target user, x ω-xω-1 representing the displacement of the image feature point on the x-axis, y ω representing the position of the omega-1 frame of the image feature point on the x-axis, x ω-1 representing the position of the omega-1 frame of the image feature point, y ω-yω-1 representing the displacement of the image feature point on the y-axis, y ω representing the position of the omega-1 frame of the image feature point on the y-axis, y ω-1 representing the position of the omega-1 frame of the image feature point,Representing the rotation angle of the image feature point on the x-axis,Representing the rotation angle of the image feature point on the y-axis,Representing the rotation angle of the image feature point on the z axis;
Determining a head movement track of the target user based on the head movement vector;
analyzing the head gesture of the target user based on the head movement track;
and determining the user viewpoint of the target user through the head gesture.
The head moving image is an image sequence containing head moving information of a target user, which is captured by an imaging system, and the image feature points are key points identified in the head moving image and are used for tracking the movement of the head. The feature points are generally located at important parts of the head, such as eyes, nose, mouth, etc., and the head moving trajectory refers to a path in which the feature points change with time in continuous head moving images. By analyzing these trajectories, translational and rotational movements of the head can be determined, the head pose referring to the direction and angle of the head, including the inclination angle of the head with respect to the horizontal plane, the rotation angle of the head in three-dimensional space, etc., the feature point displacement referring to the change in feature point position between successive image frames, the rotation angle referring to the degree of rotation of the head in three-dimensional space, and the head motion vector referring to the overall description of the head motion between successive image frames.
Further, the image feature points for identifying the head moving image may be detected by feature point detection algorithms, such as Harr is corner detection, S is FT, SURF, and the like.
Further, the determining of the head moving track of the target user based on the image feature points is mainly achieved by calculating the distance and angle change between the feature points.
According to the invention, based on the user viewpoint and the stereoscopic image, element parameters of optical elements corresponding to the optical system are adjusted, and the stereoscopic effect of the image watched by the user can be improved by obtaining the target stereoscopic display image of the LED screen. The target stereoscopic display image refers to a final image with depth sense and stereoscopic effect for audiences through an optical system and an image processing technology in a stereoscopic display system.
In detail, based on the user viewpoint and the stereoscopic image, component parameters of optical components corresponding to the optical system are adjusted, the target stereoscopic display image of the LED screen is obtained, the influence of the user viewpoint on the visual angle and depth feeling of the stereoscopic image is analyzed by mapping the user viewpoint from the coordinate system of the camera system to the coordinate system of the optical system, and parameters of the optical components, such as parameters of focal length of a lens, period of a grating and the like, are adjusted according to viewpoint analysis results.
The invention can ensure that a system can meet requirements of an application scene and a target user by analyzing the stereoscopic effect requirement of the LED screen based on the application scene and the target user, can adapt to watching habit and comfort level of the target user by constructing the multi-view layout of the photon film based on the microstructure and the stereoscopic effect requirement, can provide basis for later stereoscopic effect modification by configuring the optical element, the photon film and a collaborative work network of the LED screen, further, can divide an original image of the screen into image viewpoints based on an optical system model to serve as a basis for later stereoscopic image construction, and finally, can adjust element parameters of the optical element corresponding to the optical system based on the user viewpoints and the stereoscopic image to obtain a target stereoscopic display image of the LED screen, so that the stereoscopic effect of the user watching the image can be improved. Therefore, the invention can improve the three-dimensional optical display effect of the LED screen.
Referring to fig. 2, a flow chart of a three-dimensional optical display method for implementing an LED screen based on a photonic film according to an embodiment of the present invention is shown. In this embodiment, the method for implementing three-dimensional stereoscopic optical display of an LED screen based on a photonic film includes:
Acquiring an application scene and a target user of an LED screen, analyzing the stereoscopic effect requirement of the LED screen based on the application scene and the target user, identifying the microstructure of a preset photon film, and constructing the multi-view layout of the photon film based on the microstructure and the stereoscopic effect requirement;
determining an optical element of the LED screen based on the multi-view layout, configuring a cooperative work network of the optical element, the photon film and the LED screen, and constructing an optical system of the optical element, the photon film and the LED screen based on the cooperative work network;
constructing an optical system model of the optical system;
identifying a screen original image corresponding to the LED screen, dividing the screen original image into image viewpoints based on the optical system model, and constructing a stereoscopic image of the screen original image based on the image viewpoints;
and tracking the user viewpoint of the target user, and adjusting element parameters of optical elements corresponding to the optical system based on the user viewpoint and the stereoscopic image to obtain the target stereoscopic display image of the LED screen.
In the several embodiments provided by the present invention, it should be understood that the disclosed systems and methods may be implemented in other ways. For example, the system embodiments described above are merely illustrative, e.g., the division of the modules is merely a logical function division, and other manners of division may be implemented in practice.
The modules described as separate components may or may not be physically separate, and components shown as modules may or may not be physical units, may be located in one place, or may be distributed over multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional module in the embodiments of the present invention may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units can be realized in a form of hardware or a form of hardware and a form of software functional modules.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof.
The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference signs in the claims shall not be construed as limiting the claim concerned.
Furthermore, it is evident that the word "comprising" does not exclude other elements or steps, and that the singular does not exclude a plurality. Multiple units or systems as set forth in the system claims may also be implemented by means of one unit or system in software or hardware. The terms first, second, etc. are used to denote a name, but not any particular order.
Finally, it should be noted that the above-mentioned embodiments are merely for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention.
Claims (8)
1. The three-dimensional optical display system based on the photon film for realizing the LED screen is characterized by comprising:
The multi-view layout module is used for acquiring an application scene and a target user of the LED screen, analyzing the stereoscopic effect requirement of the LED screen based on the application scene and the target user, identifying the microstructure of a preset photon film, and constructing the multi-view layout of the photon film based on the microstructure and the stereoscopic effect requirement, wherein the constructing the multi-view layout of the photon film based on the microstructure and the stereoscopic effect requirement comprises the following steps: analyzing the microstructure characteristics of the microstructure, determining light control capability of the microstructure based on the microstructure characteristics, wherein the light control capability comprises a light propagation direction and a light focusing effect, determining an initial multi-view layout of the photonic film based on the microstructure characteristics and the light control capability, calculating layout validity of the initial multi-view layout, and constructing the multi-view layout of the photonic film when the layout validity meets a validity threshold preset by requirements, wherein the calculating the layout validity of the initial multi-view layout comprises analyzing layout validity factors of the initial multi-view layout, wherein the layout validity factors comprise parallax consistency, viewing angle coverage, stereoscopic depth feeling and viewing comfort, determining valid factor weights of the layout validity factors, and calculating the layout validity of the initial multi-view layout based on the layout validity factors and the valid factor weights by using the following formula:
ρ=(DDσ*EEσ*GGσ*HHσ)/(D+E+G+H)
Wherein ρ represents the layout effectiveness of the initial multi-view layout, D represents the parallax uniformity of the initial multi-view layout, E represents the view coverage of the initial multi-view layout, G represents the stereoscopic impression of the initial multi-view layout, H represents the viewing comfort of the initial multi-view layout, D σ represents the weight of the parallax uniformity, E σ represents the weight of the view coverage, G σ represents the weight of the stereoscopic impression, H σ represents the weight of the viewing comfort;
An optical system construction module, configured to determine an optical element of the LED screen based on the multi-viewpoint layout, configure a collaborative work network of the optical element, the photonic film, and the LED screen, and construct an optical system of the optical element, the photonic film, and the LED screen based on the collaborative work network;
An optical system model building module for building an optical system model of the optical system;
the stereoscopic image construction module is used for identifying a screen original image corresponding to the LED screen, dividing the screen original image into image viewpoints based on the optical system model, and constructing a stereoscopic image of the screen original image based on the image viewpoints;
And the display image stereoscopic optimization module is used for tracking the user viewpoint of the target user, and adjusting element parameters of optical elements corresponding to the optical system based on the user viewpoint and the stereoscopic image to obtain the target stereoscopic display image of the LED screen.
2. The photonic film-based three-dimensional stereoscopic optical display system for realizing an LED screen according to claim 1, wherein the analyzing stereoscopic effect requirements of the LED screen based on the application scene and the target user comprises:
collecting user expectations of the target user;
identifying application scene characteristics of the application scene;
Determining the stereoscopic effect type of the LED screen based on the user expectations and the application scene characteristics;
Analyzing the viewpoint number and viewpoint distribution of the stereoscopic effect type;
And determining the stereoscopic effect requirement of the LED screen based on the stereoscopic effect type, the viewpoint number and the viewpoint distribution.
3. The photonic film based three-dimensional stereoscopic optical display system for implementing an LED screen according to claim 1, wherein said configuring the optical element, the photonic film, and the co-operating network of the LED screen comprises:
Analyzing the cooperative working modes of the optical element, the photon film and the LED screen;
determining connection modes and control logic of the optical element, the photon film and the LED screen based on the cooperative working mode;
determining signal transmission schemes of the optical element, the photon film and the LED screen through the connection mode and the control logic;
And configuring a collaborative work network of the optical element, the photon film and the LED screen based on the connection mode, the control logic and the signal transmission scheme.
4. The three-dimensional optical display system for realizing an LED screen based on a photon film according to claim 1, wherein the constructing an optical system model of the optical system comprises:
determining an optical system demand of the optical system;
selecting simulation software of the optical system based on the optical system requirements;
establishing a simulation geometric model of the optical system through the simulation software;
defining a simulation scene of the simulation geometric model, and configuring simulation parameters of the simulation scene;
simulating light propagation of the optical system based on the simulation scene and the simulation parameters;
analyzing the optical performance of the optical system based on the light propagation;
And carrying out parameter optimization on the simulation geometric model through the optical performance to obtain the optical system model.
5. The photonic film-based three-dimensional stereoscopic optical display system for implementing an LED screen according to claim 1, wherein the dividing the screen original image into image viewpoints based on the optical system model comprises:
integrating the optical system model into preset image processing software to obtain an integrated optical system model;
Determining the viewpoint direction and the viewpoint position of the screen original image based on the integrated optical system model;
Calculating the viewpoint parallax of the screen original image based on the viewpoint direction and the viewpoint position;
the screen original image is segmented into image viewpoints based on the viewpoint parallaxes.
6. The photonic film based three-dimensional stereoscopic optical display system for implementing an LED screen according to claim 5, wherein the calculating the viewpoint parallax of the screen original image based on the viewpoint direction and the viewpoint position comprises:
Based on the viewpoint direction and the viewpoint position, determining a viewpoint image distance and a viewpoint ray incidence angle of a target user corresponding to the screen original image and the screen original image;
based on the viewpoint image distance and the viewpoint ray incidence angle, the viewpoint parallax of the screen original image is calculated by using the following formula:
Wherein σ represents the viewpoint parallax of the screen original image, F r represents the viewpoint image distance of the screen original image corresponding to the left eye viewpoint of the target user, F e represents the viewpoint image distance of the screen original image corresponding to the right eye viewpoint of the target user, θ r represents the viewpoint light incidence angle of the screen original image corresponding to the left eye viewpoint of the target user, θ e represents the viewpoint light incidence angle of the screen original image corresponding to the right eye viewpoint of the target user, and cos represents the cosine function.
7. The photonic film based three-dimensional stereoscopic optical display system of claim 1, wherein the tracking the user viewpoint of the target user comprises:
Acquiring a head moving image of the target user by using a preset camera system;
identifying image feature points of the head moving image;
Identifying characteristic point displacement and rotation angles of the image characteristic points;
based on the feature point displacement and the rotation angle, a head motion vector of the target user is calculated using the following formula:
Wherein, Representing the head motion vector of the target user, x ω-xω-1 representing the displacement of the image feature point on the x-axis, x ω representing the position of the omega-1 frame of the image feature point on the x-axis, x ω-1 representing the position of the omega-1 frame of the image feature point, y ω-yω-1 representing the displacement of the image feature point on the y-axis, y ω representing the position of the omega-1 frame of the image feature point on the y-axis, y ω-1 representing the position of the omega-1 frame of the image feature point,Representing the rotation angle of the image feature point on the x-axis,Representing the rotation angle of the image feature point on the y-axis,Representing the rotation angle of the image feature point on the z axis;
Determining a head movement track of the target user based on the head movement vector;
analyzing the head gesture of the target user based on the head movement track;
and determining the user viewpoint of the target user through the head gesture.
8. The three-dimensional optical display method for realizing the LED screen based on the photon film is characterized by comprising the following steps of:
Acquiring an application scene and a target user of an LED screen, analyzing the stereoscopic effect requirement of the LED screen based on the application scene and the target user, identifying a preset microstructure of a photon film, constructing a multi-view layout of the photon film based on the microstructure and the stereoscopic effect requirement, wherein the constructing the multi-view layout of the photon film based on the microstructure and the stereoscopic effect requirement comprises analyzing the microstructure characteristics of the microstructure, determining the light control capability of the microstructure based on the microstructure characteristics, wherein the light control capability comprises a light propagation direction and a light focusing effect, determining the initial multi-view layout of the photon film based on the microstructure characteristics and the light control capability, calculating the layout validity of the initial multi-view layout, and constructing the multi-view layout of the photon film when the layout validity meets a preset validity threshold, wherein the calculating the layout validity of the initial multi-view layout comprises analyzing the layout validity of the initial multi-view layout, wherein the layout valid factor comprises a coverage factor, the layout valid depth factor, the valid layout valid depth factor and the stereoscopic vision factor, and the valid parallax factor are determined based on the following a viewing angle, valid parallax factor and a valid parallax factor.
ρ=(DDσ*EEσ*GGσ*HHσ)/(D+E+G+H)
Wherein ρ represents the layout effectiveness of the initial multi-view layout, D represents the parallax uniformity of the initial multi-view layout, E represents the view coverage of the initial multi-view layout, G represents the stereoscopic impression of the initial multi-view layout, H represents the viewing comfort of the initial multi-view layout, D σ represents the weight of the parallax uniformity, E σ represents the weight of the view coverage, G σ represents the weight of the stereoscopic impression, H σ represents the weight of the viewing comfort;
determining an optical element of the LED screen based on the multi-view layout, configuring a cooperative work network of the optical element, the photon film and the LED screen, and constructing an optical system of the optical element, the photon film and the LED screen based on the cooperative work network;
constructing an optical system model of the optical system;
identifying a screen original image corresponding to the LED screen, dividing the screen original image into image viewpoints based on the optical system model, and constructing a stereoscopic image of the screen original image based on the image viewpoints;
and tracking the user viewpoint of the target user, and adjusting element parameters of optical elements corresponding to the optical system based on the user viewpoint and the stereoscopic image to obtain the target stereoscopic display image of the LED screen.
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