CN117369158B - CMYK coded high-color quasi-static light field display system and coding algorithm - Google Patents

Abstract

The present invention relates to the technical field of static light field display. In order to solve the technical problems of complex structure and low color accuracy of the existing static light field display system, the present invention discloses a CMYK-encoded high-color quasi-static light field display system and encoding algorithm. It includes a light control module and a CMYK light information module that loads multi-channel light information of multi-viewpoint pictures. The light control module controls the optical path difference of the transmitted beam and periodically regulates the phase change of the beam. The light beam is periodically controlled in different directions by the controlled light module. , forming a multi-angle beam; the CMYK optical information module is divided into a CMY color channel optical information sub-module and a K-channel optical information sub-module. The coupling of the two modules enables multi-angle beams to load their corresponding color information and light intensity information. The beams carrying the light information intersect in space to form volume pixels in space. The volume pixels are stacked to construct a three-dimensional image point cloud, achieving high definition, smooth parallax, and high color. Static light field display system with high gradation and high color accuracy.

Description

A CMYK-encoded high-color quasi-static light field display system and encoding algorithm

Technical field

The present invention relates to the technical field of static light field display, and in particular to a CMYK-encoded high-color quasi-static light field display system and encoding algorithm.

Background technique

Static light field display system is a display technology used to generate realistic visual effects. It is commonly used in virtual reality (VR), augmented reality (AR), 3D movies and other interactive media applications. Static light field display systems simulate the propagation of light in the real world by generating complex light fields between the user's eyes and the display surface, thereby creating highly realistic three-dimensional visual effects.

CMYK is a color model that represents Cyan, Magenta, Yellow and Key (usually black). This model is used to describe the various colors produced by mixing different proportions of these basic colors. In image processing, CMYK encoding algorithms are used to control the color and color accuracy of images so that colors can be accurately restored during the printing process.

However, existing static light field display devices usually use filters to control color, which results in low color accuracy of color static three-dimensional displays. In addition, the design of the filter is complex, so the structure of the entire system is also complex, which also means higher costs. Therefore, it is necessary to find a more effective method to improve the color accuracy of color static 3D displays and reduce the complexity and cost of the system.

Contents of the invention

The purpose of the present invention is to provide a CMYK-encoded high-color quasi-static light field display system and encoding algorithm to solve the technical problems of complex structure and low color accuracy of the existing static light field display system.

In order to achieve the above objectives, the specific technical solutions of a CMYK-encoded high-color quasi-static light field display system and encoding algorithm of the present invention are as follows:

A CMYK-encoded high-color quasi-static light field display system includes a CMYK light information module and a light control module located in front of it. The CMYK light information module is used to load multi-channel light information of multi-viewpoint pictures into the module. The optical module controls the optical path difference of the transmitted beam and periodically regulates the phase change of the beam, so that the beam is periodically controlled in different directions by the controlled optical module to form a multi-angle beam; the CMYK optical information module is divided into CMY color channel optical information sub-module and K Channel optical information submodule. This system couples the two modules so that multi-angle beams are loaded with their corresponding color information and light intensity information. The multi-angle beams carrying light information intersect in space to form volume pixels in the space. The volume pixels are stacked to construct a three-dimensional image point cloud. When the number of representation voxels is large enough, a continuous perception of the three-dimensional image is formed, thereby constructing the observer's stereoscopic vision and three-dimensional light field perception. The large period of light information of the CMYK light information module and the periodic structural unit of the corresponding light control module together constitute the light control unit of the light field display system.

Furthermore, the CMY color channel light information sub-module is printed on the film base material by printer ink, forming low PPI printing pixels of different colors. The printing pixels only contain color information and do not have the ability to control light intensity; K channel light The information sub-module forms a single-color high DPI exposure point by laser exposure, and realizes light intensity control in different areas by arranging the exposure points.

Furthermore, the printed pixels are formed by superimposing a variety of inks according to the frequency modulation printing method. The laser exposure points of the K-channel optical information sub-module are black dots generated through the exposure, development, and fixing processes. The laser exposure points are on the film plane. Arrange as you like.

Further, the CMY color channel light information sub-module and the K-channel light information sub-module are attached to both sides of the same diaphragm.

Further, the CMY color channel light information sub-module and the K-channel light information sub-module are respectively attached to two diaphragms. The exposure point film surface of the diaphragm where the K-channel light information sub-module is located is the same as the film where the CMY color channel light information sub-module is located. The ink surface of the printed pixels of the piece is close to each other.

Preferably, the density of printing pixels is greater than or equal to 400PPI, and the density of exposure points is greater than or equal to 2400DPI.

Further, the light information distribution of the CMY color channel light information sub-module and the K-channel light information sub-module are divided into regions according to the periodic structure of the light control module, and the formed divided areas are defined as large periods;

The light information distribution within each cycle follows the volume pixel mapping relationship, that is, within each cycle, the light information distribution is divided into multiple periodic areas along the parallax direction, and the formed divided areas are defined as small periods;

The light information within the small period of the two sub-modules of the CMYK light information module is an angular light information sampled from the light field information at the position. The information within the small period of the CMY color channel light information sub-module corresponds to the color of the angular light information. Information, the information within the small period of the K channel optical information sub-module corresponds to the light intensity information of the angle light information.

Further, the light control module is a transmissive periodic optical structure that can control the phase change of the light beam, and is used to deflect the incident light beam loaded with optical information to a certain angle for emission;

The type of light control module can be the first type of lens array: cylindrical lens grating array, double-layer orthogonal cylindrical lens grating array, rectangular lens array, circular lens array, slit grating array or aperture array, as well as multi-layer above structures A composite light control array;

The type of light control module can also be a second type of lens array: microprism array, Fresnel mirror array, metasurface metastructured lens array or metasurface nanowire periodic phase control array;

If the light control module is a first-type lens array, natural lighting or side-type light guide plate uniform light backlight or starry sky LED array uniform light backlight will be used as the backlight source;

If the light control module is a second type lens array, a collimated backlight source must be used, and the diffusion angle of the collimated backlight source shall not be greater than 10°.

Furthermore, cylindrical lens grating arrays, slit grating arrays, non-orthogonal multi-layer cylindrical lens-slit composite gratings, microprism arrays in the horizontal refraction direction, and microprism arrays in the vertical refraction direction are selected as light control modules and metasurfaces. When the nanowire periodic unidirectional phase control array is used, the volume pixels constructed by the light field display system have unidirectional parallax, that is, a periodically distributed light control structural unit can only move horizontally or vertically, or at a certain angle with both directions. Parallax changes are realized in one direction. In this patent, this light field display system is named a single parallax light field display system;

When choosing Fresnel mirror array, double-layer orthogonal cylindrical lens grating array, rectangular lens array, circular lens array, metasurface metastructured lens array, metasurface nanowire periodic multi-directional phase control array, etc. as the light control module, The volume pixels constructed by the light field display system have multi-directional parallax, that is, within a unit of a periodically distributed light control structure, parallax changes can be realized in the horizontal and vertical directions at the same time, or the parallax direction can be obtained in the horizontal and vertical directions through vector operations. , in this patent this light field display system is named full parallax light field display system;

If the light field display system is a single parallax light field display system, the CMYK light information module is preferably: the period width of the light information small period of the CMY color channel light information sub-module is the ink dot pixel diameter; the light information sub-module of the K channel The period width of the information small period is the exposure point diameter. And the small-period light information within the same large period corresponds to the light information of the three-dimensional image in a certain direction of the position. If the light field display system is a full parallax light field display system, the CMYK light information module is preferably: the small period sizes of the two sub-modules are respectively the printing pixel size of the film where the CMY color channel light information sub-module is located and the K-channel light information sub-module. The exposure point size of the diaphragm where the module is located.

A coding algorithm for CMYK-coded high-color quasi-static light field display. The coding algorithm is suitable for the CMYK light information module of the above system structure. Through this coding algorithm, the light information distribution of the two sub-modules of the CMYK light information module can be calculated. Thus, the ink printing pixel array and laser exposure point arrangement are obtained. The encoding algorithm includes the following process:

Step S1. Determine the parameters of the light control unit. Determine the large period and small period of the light information of the CMYK light information module in the light control unit and the periodic structural unit parameters of the corresponding light control module. The size of the light control unit determines the light field sampling accuracy. ;The location of different light control units determines the position where the voxel beam traces back to the light control unit; the small period division of the two sub-modules of the CMYK light information module inside the light control unit determines the sampling accuracy of different angles of the beam;

Step S2. Judgment of light field sampling accuracy. Judge the spatial frequency and angular frequency of light field sampling based on the parameters of the light control unit to provide a parameter basis for light field point cloud decomposition; CMY color channel light field information and K channel light field information are required The spatial frequency of light field sampling is consistent, and the angular resolution of light field sampling required for K channel light field information is higher than that of CMY color channel light field information;

Step S3, three-dimensional image light field modeling, perform light field modeling on the three-dimensional image that needs to be presented, and realize the virtual presentation of continuous three-dimensional images;

Step S4: Decompose the light field point cloud volume pixels, and discretely sample the virtual continuous three-dimensional image according to the judgment result of step S2 to form a volume pixel array;

Step S5: Voxel beam light control unit tracking, perform beam reverse tracking for each voxel, and track the beam contained in the voxel to the specific light control unit;

Step S6: Sampling and decomposing the position of the beam information, and mapping the light information of the volume pixels to the information of the beam contained in the light control unit;

Step S7: Decompose and separate the color intensity of the beam, and separate the light information of the beam into color information and intensity information, which are used to generate subsequent K channel light field information and CMY color channel light field information;

Step S8, K channel light field information is generated. According to the small period division of the K channel light information sub-module and the information separation achieved in step S7, the light field information on the plane is generated, and the information is filled through the exposure point;

Step S9: CMY color channel light field information is generated. According to the small period division of the CMY color channel light information sub-module and the information separation achieved in the step S7 process, the light field information on the plane is generated, and the information is filled by printing ink pixels.

A CMYK-encoded high-color quasi-static light field display system and encoding algorithm provided by the invention have the following advantages:

The light field display system constructs volume pixels (voxels) in space by controlling beam information and angle convergence. The volume pixels are stacked to form a three-dimensional image in space. The human eye observes the three-dimensional image to obtain multi-angle parallax information, and the brain produces stereoscopic vision to form three-dimensional perception. The smallest periodic unit that controls a light beam is called a light control unit. This display system consists of two parts, including a CMYK light information module and a light control module. Among them, the CMYK optical information module is divided into two sub-modules, namely the CMY color channel optical information sub-module and the K-channel optical information sub-module. The multi-channel optical information of multi-viewpoint pictures is loaded into this module; the light control module controls the transmitted light beam. The optical path difference periodically regulates the phase change of the beam, so that the beam is periodically regulated to different directions by the controlled optical module to form a multi-angle beam. Through optical structure and encoding methods, a static light field display system with high definition, smooth parallax, high color gradation and high color accuracy is achieved.

Description of the drawings

Figure 1 is an arrangement diagram of Embodiment 1 of the CMY color channel light information sub-module, K-channel light information sub-module and light control module provided by the present invention;

Figure 2 is an arrangement diagram of Embodiment 2 of the CMY color channel light information sub-module, K-channel light information sub-module and light control module provided by the present invention;

Figure 3 is an arrangement diagram of Embodiment 3 of the CMY color channel light information sub-module, K-channel light information sub-module and light control module provided by the present invention;

Figure 4 is an arrangement diagram of Embodiment 4 of the CMY color channel light information sub-module, K-channel light information sub-module and light control module provided by the present invention;

Figure 5 is a size period distribution diagram of the CMY color channel light information sub-module provided by the present invention;

Figure 6 is a size period distribution diagram of the K-channel optical information sub-module provided by the present invention;

Figure 7 is a flow chart of the CMYK-encoded high-color quasi-static light field algorithm provided by the present invention.

In the picture: 10. CMY color channel light information sub-module; 20. K-channel light information sub-module; 30. Light control module.

Implementation

In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention and are not intended to limit the present invention.

The invention provides a CMYK encoded high-color quasi-static light field display system, which includes a CMYK light information module and a light control module 30. The CMYK light information module is divided into a CMY color channel light information sub-module 10 and a K channel light information module. Sub-module 20, the CMYK optical information module loads multi-channel optical information of multi-viewpoint pictures into this module; the light control module 30 controls the optical path difference of the transmitted beam, and periodically regulates the phase change of the beam, so that the beam is controlled by the optical module for 30 cycles It can be adjusted to different directions to form a multi-angle beam.

The CMY color channel light information sub-module 10, the K-channel light information sub-module 20 and the light control module 30 include the following arrangement:

Referring to Figure 1, the CMY color channel light information sub-module 10, the K-channel light information sub-module 20 and the light control module 30 are arranged in sequence from back to front. The CMY color channel light information sub-module 10 and the K-channel light information sub-module 20 belong to Different diaphragms.

Referring to Figure 2, the K channel light information sub-module 20, the CMY color channel light information sub-module 10 and the light control module 30 are arranged in sequence from back to front. The CMY color channel light information sub-module 10 and the K channel light information sub-module 20 belong to Different diaphragms.

Referring to Figure 3, the K channel light information sub-module 20, the CMY color channel light information sub-module 10 and the light control module 30 are arranged in sequence from back to front. The CMY color channel light information sub-module 10 and the K channel light information sub-module 20 are respectively attached. on the front and rear sides of the same diaphragm.

Referring to Figure 4, the CMY color channel light information sub-module 10, the K-channel light information sub-module 20 and the light control module 30 are arranged in sequence from back to front. The CMY color channel light information sub-module 10 and the K-channel light information sub-module 20 are respectively attached. on the rear and front sides of the same diaphragm.

Among them, the CMY color channel light information sub-module 10 is printed using common standard printer inks. The printing ink adheres to the film material to form low-PPI printing pixels of different colors. The printing pixels only contain color information and do not have light intensity. control ability.

The K-channel light information sub-module 20 does not contain color information. It uses laser exposure to form a single-color high DPI exposure point, and realizes light intensity control in different areas by arranging the exposure points. After the periodic beam phase control by the light control module 30, the light intensity information control of the multi-angle beam is realized.

Furthermore, the CMY color channel optical information sub-module 10 and the K-channel optical information sub-module 20 can be prepared on the front and back of the same film, or can be separately prepared on two layers of films and combined together. If prepared on a two-layer film, the exposed dot film surface of the film where the K channel light information sub-module 20 is located is in close contact with the ink surface of the printed pixels of the film where the CMY color channel light information sub-module 10 is located.

The printing ink pixels of the diaphragm of the CMY color channel light information sub-module 10 have pixel points formed by superimposing a variety of inks according to the frequency modulation printing method; the laser exposure points of the K-channel light information sub-module 20 are generated through exposure, development, fixing and other processes. Black dots, the laser exposure points can have any arrangement on the diaphragm plane.

According to the resolution limit of the human eye, the preferred CMYK light information module should have characteristics: the ink point pixel density of the color channel light information sub-module is not less than 400PPI, and the exposure point density of the K channel light information sub-module 20 is not less than 2400DPI.

The light control module 30 is a transmissive periodic optical structure that can control the phase change of the light beam, and can deflect the incident light beam loaded with optical information to a certain angle for emission. Its structure can be a microprism array, a Fresnel mirror array, or a column. Lens grating array, double-layer orthogonal cylindrical lens grating array, rectangular lens array, circular lens array, metasurface metastructure lens array, metasurface nanowire periodic phase control array, slit grating array or aperture array, and Composite grating arrays composed of multiple layers of the above structures, etc.

According to the different light control structures, the light sources used will also be different. If you choose cylindrical lens grating array, double-layer orthogonal cylindrical lens grating array, rectangular lens array, circular lens array, slit grating array, aperture When arrays and composite light control arrays composed of multiple layers of the above structures are used as the light control module 30, they may not use backlight (relying on natural lighting) or use side-entering light guide plate uniform light backlight, starry sky LED array uniform light backlight, etc. Solution; if a microprism array, Fresnel mirror array, metasurface metalens array, or metasurface nanowire periodic phase control array is selected as the light control module 30, a collimated backlight source must be used, preferably a collimated backlight source. The diffusion angle of a straight backlight source shall not be greater than 10°.

Depending on the light control structure, the final light field display effect will be different. If you choose a cylindrical lens grating array, a slit grating array, a non-orthogonal multi-layer cylindrical lens-slit composite grating, or a micro-optical lens in the horizontal refraction direction. When the prism array, the microprism array in the vertical refraction direction are used as the light control module 30 and the metasurface nanowire periodic unidirectional phase control array, the volume pixels constructed by the light field display system have unidirectional parallax, that is, a periodically distributed control array. The light structure unit can only achieve parallax changes in one direction, horizontally or vertically, or at a certain angle with the two directions. In the present invention, the light field display system is defined as a single parallax light field display system; select a Fresnel mirror array, When the double-layer orthogonal cylindrical lens grating array, rectangular lens array, circular lens array, metasurface metalens array, metasurface nanowire periodic multi-directional phase control array, etc. are used as the light control module 30, the light field display system is constructed The volume pixels have multi-directional parallax, that is, within a unit of a periodically distributed light control structure, parallax changes can be realized in the horizontal and vertical directions at the same time, or the parallax direction can be obtained in the horizontal and vertical directions through vector operations. In the present invention, this The light field display system is defined as a full parallax light field display system.

The optical information distribution of the two sub-modules of the CMYK optical information module is divided into regions according to the periodic structure of the light control module 30. In the present invention, this region division is defined as a large period of optical information. The light information distribution within each cycle follows the volume pixel mapping relationship, that is, within each cycle, the light information distribution is divided into multiple periodic areas along the parallax direction. In the present invention, the divided areas are defined as light information small cycle.

The light information within the small period of the two sub-modules of the CMYK light information module corresponds to an angular light information sampled from the light field information at the position. The information within the small period of the CMY color channel light information sub-module 10 corresponds to the angular light information. Color information, the information within the small period of the K channel light information sub-module 20 corresponds to the light intensity information of the angle light information.

Taking the cylindrical lens grating as an example, the large and small period distributions of the CMYK optical information module are shown in Figures 5 and 6. Among them, Figure 5 is the large and small period distribution diagram of the CMY color channel optical information sub-module 10, and Figure 6 is the K The size period distribution diagram of the channel optical information sub-module 20.

The period width of the small period of light information of the CMY color channel light information sub-module 10 is the diameter of the ink dot pixel; the period width of the small period of light information of the K channel light information sub-module 20 is the diameter of the exposure point. And the small-period light information within the same large period corresponds to the light information of the three-dimensional image in a certain direction of the position.

If the light field display system is a full parallax light field display system, the small period sizes of the two sub-modules of the CMYK light information module are respectively the printing pixel size of the film where the CMY color channel light information sub-module 10 is located and the K-channel light information sub-module. 20 is the exposure point size of the diaphragm.

The light information large period of the CMYK light information module and the corresponding periodic structural unit of the light control module 30 together constitute the light control unit of the light field display system in the present invention.

In order to be applicable to the above system structure, the present invention also provides a coding algorithm for CMYK-encoded high-color quasi-static light field display. The algorithm flow is used to determine the parameters of the light control unit, judge the accuracy of light field sampling, and construct the three-dimensional image light field. Module, light field point cloud volume pixel decomposition, voxel beam light control unit tracking, beam information position sampling decomposition, decomposed beam color intensity separation, K channel light field information generation and CMY color channel light field information generation and other processes, its algorithm flow The diagram is shown in Figure 7.

The specific steps include:

Step S1, light control unit parameter determination: Determine the large period and small period of the light information of the CMYK light information module in the light control unit and the detailed parameters of the periodic structural unit of the corresponding light control module 30. The size of the light control unit determines the light information. Field sampling accuracy; the location of different light control units determines the position where the voxel beam traces back to the light control unit; the small period division of the two sub-modules of the CMYK light information module inside the light control unit determines the sampling accuracy of different angles of the light beam.

Step S2. Judgment of light field sampling accuracy: judge the spatial frequency and angular frequency of light field sampling according to the parameters of the light control unit, providing a parameter basis for light field point cloud decomposition, which is required for CMY color channel light field information and K channel light field information. The spatial frequency of light field sampling is consistent, and the angular resolution of light field sampling required for K channel light field information is higher than that of CMY color channel light field information.

Step S3, three-dimensional image light field modeling: perform light field modeling on the three-dimensional image that needs to be presented, to achieve virtual presentation of continuous three-dimensional images.

Step S4. Light field point cloud volume pixel decomposition: The virtual continuous three-dimensional image is discretized and sampled according to the judgment results of the No. 2 process to form a volume pixel array.

Step S5, voxel beam light control unit tracking: perform beam reverse tracking for each voxel, and track the beam contained in the voxel to the specific light control unit.

Step S6, beam information position sampling decomposition: map the light information of the volume pixel to the information of the beam contained in the light control unit.

Step S7: Decompose the light beam and separate the color intensity: separate the light information of the light beam into color information and intensity information to facilitate the generation of light field information of the two subsequent channels.

Step S8, K-channel light field information generation: According to the small period division of the K-channel light information sub-module 20 and the information separation achieved in step S7, light field information on the plane is generated, and information filling is realized through exposure points.

Step S9, CMY color channel light field information generation: According to the small period division of the CMY color channel light information sub-module 10 and the information separation achieved in the step S7 process, generate light field information on the plane, and realize information filling by printing ink pixels .

A CMYK-encoded high-color quasi-static light field display system and encoding algorithm provided by the invention have the following advantages:

The light field display system constructs volume pixels in space by controlling beam information and angle convergence. The stacked volume pixels form a three-dimensional image in space. The human eye observes the three-dimensional image to obtain multi-angle parallax information, and the brain produces stereoscopic vision to form three-dimensional perception. The smallest periodic unit that controls a light beam is called a light control unit. This display system consists of two parts, including a CMYK light information module and a light control module. Among them, the CMYK optical information module is divided into two sub-modules, namely the CMY color channel optical information sub-module and the K-channel optical information sub-module. The multi-channel optical information of multi-viewpoint pictures is loaded into this module; the light control module controls the transmitted light beam. The optical path difference periodically regulates the phase change of the beam, so that the beam is periodically regulated to different directions by the controlled optical module to form a multi-angle beam. Through optical structure and encoding methods, a static light field display system with high definition, smooth parallax, high color gradation and high color accuracy is achieved.

The above descriptions are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the protection of the present invention. within the range.

Claims (8)

1. A CMYK-encoded high-color quasi-static light field display system, characterized in that it includes a CMYK light information module and a light control module (30) located in front of it. The CMYK light information module is used to combine multi-channel images of multi-viewpoint pictures. Optical information is loaded into the module, and the light control module (30) controls the optical path difference of the transmitted light beam and periodically regulates the phase change of the light beam, so that the light beam is periodically controlled by the controlled light module (30) to different directions to form a multi-angle light beam; The CMYK optical information module is divided into a CMY color channel optical information sub-module (10) and a K-channel optical information sub-module (20); The light information distribution of the CMY color channel light information sub-module (10) and the K-channel light information sub-module (20) is divided into areas according to the periodic structure of the light control module (30), and the formed divided areas are defined as large periods; Within each cycle, the light information distribution is divided into multiple periodic areas along the parallax direction, and the formed divided areas are defined as small periods; The light information in the small period is an angle light information sampled from the light field information in the small period area. The information in the small period of the CMY color channel light information sub-module (10) corresponds to the color information of the angle light information, K channel The information within the small period of the light information sub-module (20) corresponds to the light intensity information of the angle light information; The high-color quasi-static light field display system has a coding algorithm for CMYK-encoded high-color quasi-static light field display, which includes the following process: Step S1, determine the parameters of the light control unit, determine the large period and small period of the light information of the CMYK light information module in the light control unit and the periodic structural unit parameters of the corresponding light control module (30); Step S2: Judgment of light field sampling accuracy, judging the spatial frequency and angular frequency of light field sampling based on the parameters of the light control unit, providing a parameter basis for light field point cloud decomposition; Step S3, three-dimensional image light field modeling, perform light field modeling on the three-dimensional image that needs to be presented, and realize the virtual presentation of continuous three-dimensional images; Step S4: Decompose the light field point cloud volume pixels, and discretely sample the virtual continuous three-dimensional image according to the judgment result of step S2 to form a volume pixel array; Step S5: Voxel beam light control unit tracking, perform beam reverse tracking for each voxel, and track the beam contained in the voxel to the specific light control unit; Step S6: Sampling and decomposing the position of the beam information, and mapping the light information of the volume pixels to the information of the beam contained in the light control unit; Step S7: Decompose and separate the color intensity of the beam, and separate the light information of the beam into color information and intensity information, which are used to generate subsequent K channel light field information and CMY color channel light field information; Step S8: Generate K-channel light field information. According to the small period division of the K-channel light information sub-module (20) and the information separation achieved in step S7, the light field information on the plane is generated, and the information is filled through the exposure point; Step S9: CMY color channel light field information is generated. According to the small period division of the CMY color channel light information sub-module (10) and the information separation achieved in the step S7 process, the light field information on the plane is generated and realized by printing ink pixels. Information fill. 2. The CMYK-encoded high-color quasi-static light field display system according to claim 1, characterized in that the CMY color channel light information sub-module (10) is printed on the diaphragm base material by printer ink to form different colors. The low-PPI printing pixels only contain color information; the K-channel light information sub-module (20) forms single-color high-DPI exposure points by laser exposure, and realizes light intensity control in different areas by arranging the exposure points. 3. The CMYK-encoded high-color quasi-static light field display system according to claim 2, characterized in that the printed pixels are superimposed by a variety of inks according to the frequency modulation printing method to form pixels, and the K-channel light information sub-module (20) The laser exposure points are black points generated through the exposure, development, and fixing processes. The laser exposure points are randomly arranged on the film plane. 4. The CMYK-encoded high-color quasi-static light field display system according to claim 1, characterized in that the CMY color channel light information sub-module (10) and the K-channel light information sub-module (20) are attached to the same diaphragm. both sides. 5. The CMYK-encoded high-color quasi-static light field display system according to claim 2, characterized in that the CMY color channel light information sub-module (10) and the K-channel light information sub-module (20) are respectively attached to two Diaphragm, the exposure dot film surface of the diaphragm where the K channel light information sub-module (20) is located is in close contact with the ink surface of the printing pixel of the diaphragm where the CMY color channel light information sub-module (10) is located. 6. The CMYK-encoded high-color quasi-static light field display system according to claim 2, characterized in that the density of printed pixels is greater than or equal to 400PPI, and the density of exposure points is greater than or equal to 2400DPI. 7. The CMYK-encoded high-color quasi-static light field display system according to claim 1, characterized in that the light control module (30) is a transmissive periodic optical structure that can regulate the phase change of the light beam, and is used to control the incident light. The light beam loaded with optical information is deflected to a certain angle and emitted; The type of the light control module (30) may be the first type of lens array: cylindrical lens grating array, double-layer orthogonal cylindrical lens grating array, rectangular lens array, circular lens array, slit grating array or aperture array, and multiple A composite light control array composed of the above-mentioned structures; The type of the light control module (30) may be a second type of lens array: a microprism array, a Fresnel mirror array, a metasurface metastructured lens array or a metasurface nanowire periodic phase control array; If the light control module (30) is a first-type lens array, natural lighting or side-type light guide plate uniform light backlight or starry sky LED array uniform light backlight is used as the backlight source; If the light control module (30) is a second type lens array, a collimated backlight source must be used, and the diffusion angle of the collimated backlight source shall not be greater than 10°. 8. The CMYK-encoded high-color quasi-static light field display system according to claim 7, characterized in that if a cylindrical lens grating array, a slit grating array, a non-orthogonal multi-layer cylindrical lens-slit composite grating are selected, If a microprism array in the horizontal refraction direction, a microprism array in the vertical refraction direction, or a periodic unidirectional phase control array of metasurface nanowires is used as the light control module (30), then the volume pixel constructed by the light field display system is a single parallax light field. display system; If you choose Fresnel mirror array, double-layer orthogonal cylindrical lens grating array, rectangular lens array, circular lens array, metasurface metastructured lens array, metasurface nanowire periodic multi-directional phase control array, etc. as the light control module ( 30), then the volume pixels constructed by the light field display system are full parallax light field display systems; If the light field display system is a single parallax light field display system, the CMYK light information module is the CMY color channel light information submodule (10). The period width of the light information small period is the ink dot pixel diameter; the K channel light information submodule (10) The period width of the small period of light information in 20) is the exposure point diameter, and the small period light information within the same large period corresponds to the light information of the three-dimensional image in a certain direction in the small period area; If the light field display system is a full parallax light field display system, the small period sizes of the two sub-modules of the CMYK light information module are respectively the printing pixel size and the K channel light information of the diaphragm where the CMY color channel light information sub-module (10) is located. The exposure point size of the diaphragm where the sub-module (20) is located.