Method, device and electronic equipment for improving viewpoint density of three-dimensional light field display

Abstract

The application provides a three-dimensional light field display method, device and electronic equipment for improving the view point density, and relates to the technical field of three-dimensional display. The three-dimensional light field display method for improving the view point density comprises the following steps: acquiring a plurality of first monocular views carrying numbering information in a first direction; determining the number of the first monocular view corresponding to the monocular view information filled in each position unit of a first light field synthesis graph according to the imaging position of each display unit on the display panel along the first direction on the viewing plane and the first light field view point density; filling the monocular view information in the plurality of first monocular views into the first light field synthesis graph according to the number of the first monocular view corresponding to the monocular view information filled in each position unit of the first light field synthesis graph; and sending the first light field synthesis graph to a display panel module. The application can significantly improve the view point density of the three-dimensional light field without changing the resolution of the light field display device.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of three-dimensional display, and in particular to a three-dimensional light field display method and device for improving the view point density and an electronic device. BACKGROUND

[0002] Current display technology is undergoing a revolution from two-dimensional to three-dimensional. With the rise of various new media technologies and human-computer interaction technologies, the demand for display technology that can provide more realistic and immersive experience has increased dramatically. In this context, light field display technology has emerged, which is based on recording and reproducing the direction and intensity information of light rays, thereby presenting a realistic three-dimensional visual effect to users without the need to wear special glasses. Three-dimensional display adds depth information to traditional two-dimensional display, which can truly restore three-dimensional objects and scenes, and has wide application prospects in medical imaging, military command, intelligent manufacturing and distance education. Three-dimensional display usually uses display panels and light control devices to construct different parallax images at different angles to provide viewers with a nearly realistic three-dimensional visual experience.

[0003] In three-dimensional display technology, view point density is an important indicator affecting the accuracy of three-dimensional display. The higher the complexity of the three-dimensional scene, the more dense the view points are needed to ensure the accuracy of the display. However, due to the limitations of existing three-dimensional light field display devices, the view point density is not the larger the better. Excessive increase in view point density will result in a decrease in spatial resolution, leading to a decrease in the clarity of the displayed image, which seriously affects the viewing experience. However, if the view point density is too small, it will result in the loss of details of the three-dimensional display image, and the high complexity content in the three-dimensional scene cannot be accurately displayed.

[0004] Therefore, how to significantly improve the view point density of the three-dimensional light field without changing the resolution of the light field display device is a technical problem to be solved. SUMMARY

[0005] In view of the problems in the prior art, the present application provides a three-dimensional light field display method and device for improving the view point density and an electronic device, which significantly improves the view point density of the three-dimensional light field without changing the resolution of the light field display device.

[0006] The application provides a three-dimensional light field display method for improving the viewpoint density, which is applied to a processor on a display device, the display device comprising a dense array light control module and a display plane module arranged in parallel in sequence; wherein the display plane module comprises a display panel with point-to-point light control; the dense array light control module comprises a light waveguide with internal total reflection and a light control array, the light control array is attached to the light waveguide according to a preset distribution mode, so that the light emitted by the backlight light source of the display device, after passing through the attachment surface of the light control array and the light waveguide, forms a plurality of backlight regions with a preset angle of non-90 degrees with the vertical direction in the display panel under the refraction of the light control array, the backlight region projects the content of a plurality of display units on the display panel along a first direction with a first light field viewpoint density on a viewing plane according to the preset angle; wherein the first light field viewpoint density is the number of viewpoints contained in a first unit light field region on the viewing plane in the first direction, the first unit light field region is the region formed by the backlight of any display unit projecting its content onto the viewing plane along the first direction, and the first light field viewpoint density is greater than 1. The method comprises:

[0007] Obtaining a plurality of first monocular views carrying numbering information in the first direction; determining the number of the first monocular view corresponding to the monocular view information filled in each position unit of the first light field synthesis graph according to the imaging position of each display unit on the display panel on the viewing plane in the first direction and the first light field viewpoint density; wherein the first light field synthesis graph is a light field synthesis graph with a stereoscopic effect in the first direction; filling the monocular view information in the plurality of first monocular views into the first light field synthesis graph according to the number of the first monocular view corresponding to the monocular view information filled in each position unit of the first light field synthesis graph; sending the first light field synthesis graph to the display plane module, instructing the display plane module to display the first light field synthesis graph on the display panel, so as to project each monocular view information displayed by the display panel onto the viewing plane in the order of the number of the corresponding first monocular view by the backlight region.

[0008] According to the three-dimensional light field display method for improving view point density provided by the application, the number of the first monocular view corresponding to the monocular view information filled in the position unit in the first light field synthesis graph corresponding to each display unit on the display panel is determined according to the imaging position of each display unit on the display panel on the viewing plane along the first direction and the first light field view point density, and the method comprises the following steps: for the imaging position of each display unit on the display panel on the viewing plane along the first direction, the number of the first monocular view corresponding to the monocular view information filled in the position unit in the first light field synthesis graph corresponding to the display unit is determined by performing the following operations: determining the ratio between the distance between the imaging position of the display unit on the viewing plane and the position of the first imaging point along the first direction and the width of the first unit light field region, to obtain the first imaging position ratio value corresponding to the display unit; wherein the first imaging point is the imaging starting point of the backlight region covering the display unit on the viewing plane; the first imaging position ratio value corresponding to the display unit is rounded by using the first light field view point density, and the number of the first monocular view corresponding to the monocular view information filled in the position unit in the first light field synthesis graph corresponding to the display unit is determined according to the result of the rounding operation.

[0009] According to the three-dimensional light field display method for improving view point density provided by the application, the step of performing the rounding operation on the first imaging position ratio value corresponding to the display unit by using the first light field view point density, and determining the number of the first monocular view corresponding to the monocular view information filled in the position unit in the first light field synthesis graph corresponding to the display unit according to the result of the rounding operation is performed by using the following formula:

[0010]

[0011] wherein, is the reciprocal of the first light field view point density, is the first imaging position ratio value, and n is the number of the first monocular view corresponding to the monocular view information filled in the position unit in the first light field synthesis graph corresponding to the display unit.

[0012] According to the three-dimensional light field display method for improving view point density provided by the application, the imaging position of any display unit on the viewing plane along the first direction is obtained by using the following method: the imaging position of the display unit on the viewing plane along the first direction is obtained according to the distance between the upper left corner of the display unit and the left side edge of the light control array along the first direction.

[0013] The application provides a three-dimensional light field display method for improving view point density, which is applied to a processor on a display device, the display device comprising a dense array light control module and a display plane module arranged in parallel in sequence; wherein the display plane module comprises a display panel with point-to-point light control; the dense array light control module comprises a light waveguide with internal total reflection and a light control array, the light control array is attached to the light waveguide according to a preset distribution mode, so that the light emitted by the backlight light source of the display device, after passing through the attachment surface of the light control array and the light waveguide, forms a plurality of backlight areas with a non-90-degree preset angle with the vertical direction in the display panel under the refraction of the light control array, the backlight areas project the content of a plurality of display units on the display panel onto a viewing plane in a first direction with a first light field view point density and in a second direction with a second light field view point density according to the preset angle; wherein the first light field view point density is the number of view points contained in a first unit light field area on the viewing plane, the first unit light field area is an area formed by the backlight along the first direction to project the content of any display unit onto the viewing plane, the first light field view point density is greater than 1, the second light field view point density is the number of view points contained in a second unit light field area on the viewing plane, the second unit light field area is an area formed by the backlight along the second direction to project the content of any display unit onto the viewing plane, the second light field view point density is greater than 1; the method comprises:

[0014] acquire a plurality of first monocular views carrying number information in the first direction and a plurality of second monocular views carrying number information in the second direction; determine the number of the first monocular view corresponding to the monocular view information filled in each position unit of the second light field synthesis graph according to the imaging position of each display unit on the display panel along the first direction on the viewing plane and the first light field view point density; wherein the second light field synthesis graph is a light field synthesis graph with stereoscopic effect in the first direction and the second direction; determine the number of the second monocular view corresponding to the monocular view information filled in each position unit of the second light field synthesis graph according to the imaging position of each display unit on the display panel along the second direction on the viewing plane and the second light field view point density; fill the monocular view information in the plurality of first monocular views and the monocular view information in the plurality of second monocular views into the second light field synthesis graph according to the number of the first monocular view and the number of the second monocular view corresponding to the monocular view information filled in each position unit of the second light field synthesis graph by using a preset light field synthesis algorithm; send the second light field synthesis graph to the display plane module, instruct the display plane module to display the second light field synthesis graph on the display panel, and use the backlight area to project each monocular view information displayed by the display panel onto the viewing plane in the order of the number of the corresponding first monocular view along the first direction and in the order of the number of the corresponding second monocular view along the second direction.

[0015] According to the three-dimensional light field display method for improving view point density provided by the application, the number of the first monocular view corresponding to the monocular view information filled in each position unit in the second light field synthesis diagram is determined according to the imaging position of each display unit on the display panel along the first direction on the viewing plane and the first light field view point density, and the method comprises the following steps: for the imaging position of each display unit on the display panel along the first direction on the viewing plane, the number of the first monocular view corresponding to the monocular view information filled in the position unit in the second light field synthesis diagram corresponding to the display unit is determined by performing the following operations: the ratio between the distance along the first direction between the imaging position of the display unit on the viewing plane along the first direction and the position of the first imaging point and the width of the first unit light field region is obtained to obtain the first imaging position ratio value corresponding to the display unit, wherein the first imaging point is the imaging starting point of the backlight region covering the display unit on the viewing plane; the first imaging position ratio value corresponding to the display unit is subjected to an integer operation by using the first light field view point density, and the number of the first monocular view corresponding to the monocular view information filled in the position unit in the second light field synthesis diagram corresponding to the display unit is determined according to the result of the integer operation.

[0016] The application further provides a three-dimensional light field display device for improving view point density, which is arranged in a processor on a display device, and comprises: an acquisition module, configured to acquire a plurality of first monocular views carrying number information in the first direction; a determination module, configured to determine the number of the first monocular view corresponding to the monocular view information filled in each position unit in a first light field synthesis diagram according to the imaging position of each display unit on the display panel along the first direction on the viewing plane and the first light field view point density; wherein the first light field synthesis diagram is a light field synthesis diagram having a stereoscopic effect in the first direction; a filling module, configured to fill the monocular view information in the plurality of first monocular views into the first light field synthesis diagram according to the number of the first monocular view corresponding to the monocular view information filled in each position unit in the first light field synthesis diagram; and a sending module, configured to send the first light field synthesis diagram to the display panel module, instructing the display panel module to display the first light field synthesis diagram on the display panel, so that each monocular view information displayed by the display panel is projected onto the viewing plane in the order of the number of the corresponding first monocular view by using the backlight region.

[0017] The application further provides an electronic device comprising a memory, a processor and a computer program stored in the memory and capable of running on the processor, wherein the processor implements the three-dimensional light field display method for improving view point density according to any one of the above-mentioned methods when executing the program.

[0018] The application further provides a non-transitory computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the three-dimensional light field display method for increasing the view point density according to any one of the above.

[0019] The application further provides a computer program product comprising a computer program which, when executed by a processor, implements the three-dimensional light field display method for increasing the view point density according to any one of the above.

[0020] The three-dimensional light field display method for increasing the view point density, the device and the electronic equipment provided by the application obtain a plurality of backlight regions with a preset angle other than 90 degrees with the vertical direction of the display panel by the distribution mode of the light control array on the optical waveguide, project the content in the plurality of display units into the first unit light field region by the inclined backlight region, thereby presenting more view points in the same light field region, and significantly increase the view point density of the three-dimensional light field without changing the resolution of the light field display device. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0022] Figure 1 is a structural schematic diagram of the display device provided by the application.

[0023] Figure 2 is a schematic diagram of the display plane module, the light control array and the optical waveguide provided by the application.

[0024] Figure 3 is a schematic diagram of a light control grating structure provided by the application.

[0025] Figure 4 is a schematic diagram of another light control grating structure provided by the application.

[0026] Figure 5 is a schematic diagram of a dense point array light control module provided by the application.

[0027] Figure 6 is a schematic diagram of the lens array specification of the dense array light control module provided by the application.

[0028] Figure 7 is one of the flowcharts of the three-dimensional light field display method for increasing the view point density provided by the application.

[0029] Figure 8 is a flowchart of a method for determining the number of a first monocular view corresponding to monocular view information filled in a position unit in a first light field synthesis diagram provided by the present application.

[0030] Figure 9 is a flowchart of a method for determining the number of a first monocular view corresponding to monocular view information filled in a position unit in a first light field synthesis diagram provided by the present application.

[0031] Figure 10 is a flowchart of a method for determining the number of a first monocular view corresponding to monocular view information filled in a position unit in a first light field synthesis diagram provided by the present application.

[0032] Figure 11 is a schematic diagram of a dense linear array light control module and corresponding viewpoint coding provided by the present application.

[0033] Figure 12 is a schematic diagram of a dense linear array light control module and corresponding viewpoint coding provided by the present application.

[0034] Figure 13 is a schematic diagram of a dense linear array light control module and corresponding viewpoint coding provided by the present application.

[0035] Figure 14 is a schematic diagram of a dense linear array light control module and corresponding viewpoint coding provided by the present application.

[0036] Figure 15 is a schematic diagram of a dense linear array light control module and corresponding viewpoint coding provided by the present application.

[0037] Figure 16 is a schematic diagram of a dense linear array light control module and corresponding viewpoint coding provided by the present application.

[0038] Figure 17 is a schematic diagram of a dense linear array light control module and corresponding viewpoint coding provided by the present application.

[0039] Figure 18 is a schematic diagram of a dense linear array light control module and corresponding viewpoint coding provided by the present application. DETAILED DESCRIPTION

[0040] To make the objectives, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be described clearly and completely below with reference to the drawings in the present application. Obviously, the described embodiments are some embodiments of the present application, but not all embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0041] The display device provided by the present application will be described below with reference to the drawings. Figures 1-6 The display device provided by the present application will be described below with reference to the drawings.

[0042] Figure 1 This is a schematic diagram of the structure of the display device provided by the present invention. Figure 1 As shown, the display device includes a dense array light control module and a display plane module arranged in parallel in sequence.

[0043] The display panel module includes a display panel with point-to-point light control. A single point or single line light control unit from the dense array light control module can control all display units in a corresponding area of ​​the display panel. In specific implementations, depending on the type of display panel, the display unit can be a pixel unit or a sub-pixel unit.

[0044] like Figure 2 As shown, the dense array light control module is composed of panel-shaped components, including an internal total internal reflection optical waveguide and a light control array, which is attached to the optical waveguide according to a preset distribution.

[0045] The dense array light control module can control the light emission effect of the backlight source, turning the complete continuous backlight source of a general display device into two different light control areas: the light-emitting area (the area corresponding to the bonding surface between the light control array and the optical waveguide) and the non-light-emitting area.

[0046] In the light-emitting area, the light emitted from the backlight source of the display device can escape normally from the area, forming a light source with uniform brightness, including but not limited to point array light sources and line array light sources, which can illuminate the corresponding area in the display panel; in the non-light-emitting area, the light emitted from the backlight source of the display device is restricted from escaping from the area, forming a dark area without light.

[0047] In the specific implementation process, the light emitted by the backlight source of the display device, after passing through the bonding surface of the light control array and the optical waveguide, is refracted by the light control array to form multiple backlight areas at a preset angle of non-90 degrees to the vertical direction within the display panel (such as...). Figure 12 (As shown in the tilted shadow area), the backlight area, at a preset angle, projects the content of multiple display units on the display panel it covers onto the viewing plane along a first direction with a first light field viewpoint density, and along a second direction with a second light field viewpoint density; wherein, the first light field viewpoint density is the number of viewpoints contained in a first unit light field area on the viewing plane, the first unit light field area is the area formed by the backlight along the first direction projecting the content of any display unit onto the viewing plane, and the first light field viewpoint density is greater than 1; the second light field viewpoint density is the number of viewpoints contained in a second unit light field area on the viewing plane, the second unit light field area is the area formed by the backlight along the second direction projecting the content of any display unit onto the viewing plane, and the second light field viewpoint density is greater than 1.

[0048] The viewing plane is the plane parallel to the display panel where the observer's line of sight lies, given a given viewing distance between the observer and the display device.

[0049] In practice, the first direction can be either horizontal or vertical, and is not limited by the description in this manual.

[0050] In related technologies, under the projection of continuous and uniform backlight, the number of projected viewpoints within each first unit light field area is 1, that is, the first light field viewpoint density is equal to 1. In the embodiment provided by the present invention, by controlling the distribution of the light control array on the optical waveguide, multiple backlight areas are obtained at a preset angle of non-90 degrees to the vertical direction within the display panel. The content of multiple display units is projected onto the first unit light field area below the viewing plane by these tilted backlight areas, thereby presenting more viewpoints in the same light field area. Without changing the resolution of the light field display device, the viewpoint density of the three-dimensional light field is significantly improved.

[0051] The higher the viewpoint density of the first light field, the greater the amount of spatial information contained in the light field region in the first direction, thus enabling the presentation of more natural and realistic depth clue information in the first direction.

[0052] Correspondingly, the higher the viewpoint density of the second light field, the greater the amount of spatial information contained in the light field region in the second direction, thus enabling the presentation of more natural and realistic depth clue information in the second direction.

[0053] In practical implementation, the first optical field viewpoint density can be set by adjusting the distribution of the light control array on the surface of the optical waveguide. For example, as... Figure 12 The light control array shown projects the content displayed by the three display units onto a first unit light field area, which can produce the following effect: Figure 13 The image shows a high-density 3D display effect with 21 viewpoints displayed in 7 first-unit light field regions.

[0054] For example, by adjusting the distribution of the light control array, increasing the... Figure 12 The preset angle between the backlight area shown and the vertical direction within the display panel can project the display content of 5 display units into a first unit light field area. Therefore, the first light field viewpoint density corresponding to the adjusted distribution method is 5.

[0055] According to the embodiments provided by this invention, the number of viewpoints that can be imaged in a single backlight area in a first direction below the viewing plane is as follows: If R (the horizontal displacement of the two rows of backlight areas) is an integer, then: If R is not an integer, then: ,in Indicates to Rounded down, n represents the number of display units located between the center points of the two backlight areas. The density at the first light field viewpoint. b The horizontal width of the display unit.

[0056] The light control array consists of periodically arranged strips (such as...) obtained through processing. Figure 3 The light-controlling grating structure shown) or point array light source (such as...) Figure 4 The structure shown is composed of a light-controlling grating, which can control the light to form the desired linear or dot array backlight source emission effect.

[0057] In some embodiments, a light-controlling grating is selected as the light-controlling array, utilizing the directional light-controlling effect of a grating. A light-controlling grating module, conforming to the light-controlling effect of a three-dimensional light field display, is attached to the upper surface of the optical waveguide panel near the display device module. This allows light to propagate inside the optical waveguide panel and escape only from the area where the light-controlling grating module is attached, forming a light-emitting area. The remaining areas without the light-controlling grating module form a non-light-emitting area. The light-controlling grating is a prism with a semi-elliptical cross-section, with one flat side tightly attached to the optical waveguide panel.

[0058] For example only, such as Figure 3 The light-controlling grating structure shown is composed of multiple cylindrical lenses of the same specifications, which can arrange the light emitted by the dense array light-controlling module in a linear array. For the preferred cylindrical lens grating, its size should be consistent with the size of the light-emitting area of ​​the dense array light-controlling module in the design, and the refractive index of the lens grating should be similar to that of the optical waveguide. For example, the width of the area where a single grating is bonded to the optical waveguide panel should be less than or equal to the width of the smallest display unit (e.g., a pixel) of the display panel, the grating height should be less than or equal to half the width of the bonding area, and the length should be consistent with the height and width of the waveguide material panel.

[0059] As an example only, for a preferred display device where parallax exists in both the horizontal and vertical directions, its dense array light control module has a component such as [example missing] pasted on the optical waveguide panel. Figure 4 The lens array shown consists of multiple identical dot lenses, causing the light emitted from the dense array light control module to be arranged in a dot array. The size of the point light source generated by the dot lenses should be the same as or smaller than the size of the display unit (e.g., pixel or sub-pixel) of the display panel. The imaging position of each display unit on the display panel of the display device in a first direction below the viewing plane is determined by the distribution of the dot lenses in the first direction, and the imaging position of each display unit on the display panel of the display device in a second direction below the viewing plane is determined by the distribution of the dot lenses in the second direction.

[0060] For optical waveguide, preferably, a light-transmitting material with refractive index greater than 1.4 is used. In the implementation, a glue layer with refractive index similar to that of the optical waveguide and the light control array can be used to adhere the two. For a preferred dense array light control module part, a manufacturing process combining the optical waveguide and the light control array is used to form the grating lens-like protrusions directly on the smooth surface of the optical waveguide, thereby reducing the light loss caused by the adhesion of the two while maintaining the light control effect.

[0061] As shown in the display panel and the light control array shown in Figure 5 and Figure 6 , the vertical length of the smallest controllable display unit (pixel or sub-pixel) is a, and the horizontal width is b. On the dense array light control module part, the vertical length of a single light-emitting area (for example, a single light control grating) is h , and the horizontal width is l . The horizontal periodical spacing between the single light-emitting areas of the light control array is P, and the vertical periodical spacing is Q.

[0062] When the display device performs a single-direction three-dimensional light field display task, the size of the single light-emitting area on the dense array light control module part needs to satisfy l ≤b, and there is no limitation on h .

[0063] The viewing angle θ of the three-dimensional image obtained by the display device is determined by the distance L between the dense array light control module part and the display panel, and the horizontal periodical spacing P of the light-emitting area on the module, and satisfies the following formula:

[0064] (1)

[0065] When the display device performs a three-dimensional light field display task with parallax in the horizontal and vertical directions, the size of each light-emitting area needs to satisfy , .

[0066] The horizontal viewing angle and the vertical viewing angle of the three-dimensional image obtained by the display device are determined by the distance L between the dense array light control module part and the display panel, and the horizontal periodical spacing P and the vertical periodical spacing Q of the light-emitting area on the module, and satisfy the following formula:

[0067] (2)

[0068] (3)

[0069] In practice, to achieve a clearer display and avoid adjacent imaging of two pixels of the same color, the horizontal periodic spacing P, the vertical periodic spacing Q, and the horizontal displacement R of the two rows of light-emitting areas should satisfy the following formula:

[0070] (4)

[0071] (5)

[0072] (6)

[0073] in, i A positive integer that is not a multiple of 3. j Let x be any positive integer, y be any number between 0 and b, and R be any number between 0 and p.

[0074] As an example only, a display device can adopt such as Figure 5 and Figure 6 The 4K resolution LCD panel shown is used as the display panel. The smallest controllable unit of the LCD panel is a single pixel, with a vertical length of a = 36.75 μm and a horizontal width of b = 12.25 μm. The pixels are arranged in a cyclical pattern of RGB (red, green, blue) in the horizontal direction; in the vertical direction, each column of pixels is the same color. The design considers a light field display system with only N = 21 viewpoints in the horizontal direction below the viewing plane. According to the design parameters, the horizontal periodic spacing of the linear array should be P = 85.75 μm, and the horizontal width of a single line light source should be n = l =12.25μm, the vertical length of the line light source is the same as the vertical length of the waveguide material. There is a 600μm thick glass interlayer between the 3D light guide plate and the LCD panel. These parameters achieve a viewing range of 28cm for a continuous 3D scene at a viewing distance of 40cm, and a viewing angle of approximately 40 degrees for the 3D scene.

[0075] The display device provided by this invention utilizes a dense array light control module comprising an internally totally internally ... Figures 7 to 10 (The relevant content will not be repeated here) to obtain a three-dimensional image on the viewing plane with high viewpoint density and order, and coherence.

[0076] The following is combined with Figures 7-10 This invention describes a three-dimensional light field display method for improving viewpoint density.

[0077] Figure 7 is one of flowcharts of the three-dimensional light field display method for improving view point density provided by the present application, as shown in the figure, the method comprises the following: Figure 7

[0078] Step 701, acquiring a plurality of first monocular views carrying numbering information in a first direction.

[0079] The monocular view refers to an image or view photographed by using only one camera (monocular lens). For example, the first direction is the horizontal direction, and the plurality of first monocular views can include a left eye view, a right eye view, etc.

[0080] In the implementation process, each first monocular view can be numbered according to the actual used light field synthesis rule, which is not limited by the description in the specification. For example, if it is necessary to fill the light field synthesis image according to the position of the camera for photographing the first monocular view, each first monocular view can be numbered according to the physical position or layout of the camera to obtain the numbering information of each first monocular view.

[0081] In the implementation process, the plurality of first monocular views can be acquired by the module for implementing the three-dimensional light field display method for improving view point density provided by the present application from other processing modules through a common way (for example, interface calling or memory sharing, etc.), which is not limited by the description in the specification.

[0082] Step 702, determining the numbering of the first monocular view corresponding to the monocular view information filled in each position unit of the first light field synthesis image according to the imaging position of each display unit on the display panel in the first direction on the viewing plane and the first light field view point density.

[0083] The light field synthesis image is based on the light field imaging principle, and the multi-dimensional monocular view information collected is processed and analyzed to synthesize image data with specific viewing angle, focal length or depth information.

[0084] The first light field synthesis image is a light field synthesis image with a stereoscopic effect in the first direction.

[0085] For detailed description of the first light field view point density, please refer to the related content in Figure 1 , which will not be repeated here.

[0086] In the implementation process, the imaging position of each display unit on the display panel on the viewing plane is determined by the distribution mode of the light control array on the surface of the light waveguide.

[0087] In some embodiments, the distribution mode of the light control array on the surface of the light waveguide is as shown in Figure 11 ​As shown: each group of light control array is distributed on the surface of the optical waveguide with a preset angle of inclination other than 90 degrees. In this embodiment, as shown in Figure 12 As shown, according to the lens projection principle, the imaging position of each display unit on the display panel in the first direction on the viewing plane can be obtained in the following way: according to the horizontal distance from the upper left corner of any display unit to the left edge of the light control array, the imaging position of the display unit in the first direction on the viewing plane is obtained.

[0088] In the related art, the monocular view information of different positions in the plurality of first monocular views is filled into the first light field synthesis diagram in the order of the number of each first monocular view. For example, there are a total of 12 first monocular views, the first monocular view information extracted from the first monocular view numbered 1 is filled into the first position unit of the first light field synthesis diagram; the first monocular view information extracted from the first monocular view numbered 2 is filled into the second position unit of the first light field synthesis diagram; the first monocular view information extracted from the first monocular view numbered 3 is filled into the third position unit of the first light field synthesis diagram, and so on, until the first monocular view information extracted from the first monocular view numbered 12 is filled into the twelfth position unit of the first light field synthesis diagram, and then the second monocular view information extracted from the first monocular view numbered 1 is filled into the thirteenth position unit of the first light field synthesis diagram in the above order.

[0089] As shown in the embodiment provided by the present application, Figure 13 As shown, the backlight area can continuously project the display content of the display units in different rows on the display panel onto the viewing plane, and if the filling order of the first monocular view in the related art is followed, the final imaging information will be disordered. Therefore, it is necessary to adjust the order of the first monocular view filling the first light field synthesis diagram, so that the backlight area projects each monocular view information displayed by the display panel onto the viewing plane according to the number order of the corresponding first monocular view.

[0090] For example, from the top view angle, the backlight area of the dense linear array light control module is Figure 12 The oblique gray area from the upper left to the lower right in the display panel (which shows the display panel of the first light field synthesis diagram). The backlight area will project the three display units covered by the backlight area in the L1 row, the L2 row and the L3 row of the display panel as shown in Figure 13 L1 row, L2 row and L3 row in the order of 1, 3 and 2. Therefore, the number of the first monocular view corresponding to the monocular view information filled in the corresponding position unit of the three display units in the first light field synthesis diagram needs to be adjusted to 1, 3 and 2 respectively.

[0091] For one embodiment of the method of determining the number of the first monocular view corresponding to the monocular view information filled in each position unit of the first light field synthesis graph, please refer to the related content in Figure 8 , which will not be repeated here.

[0092] Step 703, fill the monocular view information in the plurality of first monocular views into the first light field synthesis graph according to the number of the first monocular view corresponding to the monocular view information filled in each position unit of the first light field synthesis graph.

[0093] For example only, the number of the first monocular view corresponding to the monocular view information filled in each position unit of the first light field synthesis graph is 1, 4, 7, 10, 13, 16, 19… in turn. As shown in Figure 12 , the first monocular view information extracted from the first monocular view numbered 1 can be filled into the first position unit of the first light field synthesis graph; the first monocular view information extracted from the first monocular view numbered 4 can be filled into the second position unit of the first light field synthesis graph; the first monocular view information extracted from the first monocular view numbered 7 can be filled into the tenth position unit of the first light field synthesis graph…

[0094] Step 704, send the first light field synthesis graph to the display plane module, instruct the display plane module to display the first light field synthesis graph on the display panel, so that each monocular view information displayed by the display panel is projected onto the viewing plane in the order of the number of the corresponding first monocular view by the backlight area.

[0095] In the specific implementation process, the module for implementing the three-dimensional light field display method for improving the viewpoint density provided by the application can send the first light field synthesis graph to the relevant driving module in the display plane module through a common way (for example, interface calling or memory sharing, etc.), and the driving module displays the first light field synthesis graph on the display panel. When the display plane module displays the first light field synthesis graph, each backlight area formed by the dense array light control module projects each monocular view information displayed by the display panel onto the viewing plane in the order of the number of the corresponding first monocular view.

[0096] For example only, as shown in Figure 12 , the first light field synthesis graph displayed on the display panel is projected onto the viewing plane as shown in Figure 13 . On the viewing plane, the number of the corresponding first monocular view of the continuously arranged viewpoints is also continuous.

[0097] In the embodiments provided by the present application, the imaging position of each display unit on the display panel on the viewing plane and the first light field viewpoint density are determined, the number of the monocular view corresponding to the monocular view information filled in each position unit in the first light field synthesis diagram is determined, the monocular view information in the plurality of first monocular views is filled into the first light field synthesis diagram according to the number of the first monocular view corresponding to the monocular view information filled in each position unit in the first light field synthesis diagram, and after the first light field synthesis diagram is displayed on the display panel, each monocular view information displayed by the display panel is projected onto the viewing plane in the order of the number of the corresponding first monocular view by using the backlight area, so that a three-dimensional image with high viewpoint density and in order and continuity on the viewing plane is obtained.

[0098] Figure 8 is a flowchart of the method for determining the number of the first monocular view corresponding to the monocular view information filled in each position unit in the first light field synthesis diagram provided by the present application, as shown in Figure 8 , the imaging position of each display unit on the display panel on the viewing plane along the first direction is determined, and the number of the first monocular view corresponding to the monocular view information filled in the position unit in the first light field synthesis diagram corresponding to the display unit is determined by performing the following steps.

[0099] Step 801, the distance between the imaging position of the display unit on the viewing plane and the position of the first imaging point along the first direction is determined, and the ratio between the first unit light field region width and the first imaging position proportion value is obtained.

[0100] As shown in Figure 14 , the first imaging point is the imaging starting point of the backlight area covering the display unit on the viewing plane, that is, the imaging point closest to the left edge of the display panel among all the imaging points of the backlight area.

[0101] Only as an example, the display panel shown in Figure 13 is taken as an example for description, as shown in Figure 14 , the imaging position of the display unit in the first column of L1 row on the viewing plane in the first direction coincides with the first imaging point, therefore, the first imaging position proportion value corresponding to the display unit is 0, and by analogy, the imaging position of the display unit in the seventh column of L1 row on the viewing plane in the first direction is 6 , , which is the width of the first unit light field region, therefore, the first imaging position proportion value corresponding to the display unit is 6; as shown in Figure 15 , the imaging position of the display unit in the second column of L2 row on the viewing plane in the first direction is , therefore, the first imaging position proportion value corresponding to the display unit is ; as Figure 16 shown in FIG. 7, the imaging position of the display unit in the second column of the L3 row in the first direction under the viewing plane is Therefore, the first imaging position proportion value corresponding to the display unit is .

[0102] Step 802, using the first light field viewpoint density, performing an integer operation on the first imaging position proportion value corresponding to the display unit, and according to the result of the integer operation, determining the number of the first monocular view corresponding to the monocular view information filled in the position unit in the first light field synthesis graph corresponding to the display unit.

[0103] Using the first light field viewpoint density, performing an integer operation on the first imaging position proportion value corresponding to the display unit, that is, converting the first imaging position proportion value obtained in step 801 into an integer to obtain the arrangement position number of the viewpoint corresponding to the display unit under the viewing plane, and taking the position number as the number of the first monocular view corresponding to the monocular view information filled in the position unit in the first light field synthesis graph corresponding to the display unit.

[0104] In the specific implementation process, the following formula can be used to perform the integer operation on the first imaging position proportion value corresponding to the display unit, and according to the result of the integer operation, the number of the first monocular view corresponding to the monocular view information filled in the position unit in the first light field synthesis graph corresponding to the display unit can be determined:

[0105] (7)

[0106] wherein, is the reciprocal of the first light field viewpoint density, is the first imaging position proportion value corresponding to the display unit, n is the number of the first monocular view corresponding to the monocular view information filled in the position unit in the first light field synthesis graph corresponding to the display unit.

[0107] For example only, as Figure 12 shown in the first light field synthesis graph in FIG. 7, the first light field viewpoint density and the first imaging position proportion value corresponding to each display unit are brought into formula (7) to calculate the number of the first monocular view corresponding to the monocular view information filled in the first column of the L1 row in the first light field synthesis graph as: ; the number of the first monocular view corresponding to the monocular view information filled in the second column of the L2 row in the first light field synthesis graph is: ; the number of the first monocular view corresponding to the monocular view information filled in the second column of the L3 row in the first light field synthesis graph is: ; and the number of the first monocular view corresponding to the monocular view information filled in the seventh column of the L3 row in the first light field synthesis graph is: .

[0108] Figure 9 is a flowchart of the third embodiment of the method for improving the viewpoint density of a three-dimensional light field display provided by the present application.

[0109] The method is applied to a processor on a display device. For details of the display device, see the related content in Figure 1 , which will not be described here.

[0110] As shown in Figure 9 , the method comprises the following steps:

[0111] Step 901: Obtain a plurality of first monocular views carrying numbering information in a first direction, and a plurality of second monocular views carrying numbering information in a second direction.

[0112] In the specific implementation process, the first direction can be the horizontal direction, and the second direction can be the vertical direction, which is not limited by the description in the specification. For details of the first monocular view and the second monocular view, see the related content in Figure 7 , which will not be described here.

[0113] In the specific implementation process, the plurality of first monocular views and the plurality of second monocular views can be obtained by the module for improving the viewpoint density of a three-dimensional light field display provided by the present application in the processor from other processing modules through a common way (for example, interface calling or memory sharing, etc.), which is not limited by the description in the specification.

[0114] Step 902: Determine the numbering of the first monocular view corresponding to the monocular view information filled in each position unit in the second light field synthesis diagram according to the imaging position of each display unit on the display panel on the viewing plane along the first direction and the first light field viewpoint density.

[0115] For details of the first light field viewpoint density, see the related content in Figure 1 , which will not be described here.

[0116] For details of determining the imaging position of each display unit on the display panel on the viewing plane along the first direction or the second direction, see the related content in Figure 7 , which will not be described here.

[0117] The second light field synthesis diagram is a light field synthesis diagram with stereoscopic effect in both the first direction and the second direction.

[0118] For details of determining the numbering of the first monocular view corresponding to the monocular view information filled in each position unit in the second light field synthesis diagram, see the related content in Figure 10 , which will not be described here.

[0119] Step 903, determining the number of the first monocular view corresponding to the monocular view information filled in the position unit in the second light field synthesis graph according to the imaging position of each display unit on the display panel along the second direction on the viewing plane and the second light field view point density.

[0120] Step 904, filling the monocular view information in the plurality of first monocular views and the monocular view information in the plurality of second monocular views into the second light field synthesis graph by using a preset light field synthesis algorithm according to the number of the first monocular view and the number of the second monocular view corresponding to the monocular view information filled in each position unit in the second light field synthesis graph.

[0121] In the specific implementation process, the monocular view information in the first direction and the second direction can be extracted from the preset positions of the first monocular view and the second monocular view respectively, and the extracted monocular view information in the first direction and the second direction can be synthesized and filled into the corresponding position unit in the second light field synthesis graph by using the preset light field synthesis algorithm.

[0122] Step 905, sending the second light field synthesis graph to the display plane module, instructing the display plane module to display the second light field synthesis graph on the display panel, so as to project each monocular view information displayed by the display panel onto the viewing plane along the first direction in the order of the number of the corresponding first monocular view and along the second direction in the order of the number of the corresponding second monocular view by using the backlight area.

[0123] Figure 10 is a flowchart of the method for determining the number of the first monocular view corresponding to the monocular view information filled in the position unit in the second light field synthesis graph provided by the application, as shown in Figure 10 for the imaging position of each display unit on the display panel along the first direction on the viewing plane, the following operations are performed to determine the number of the first monocular view corresponding to the monocular view information filled in the position unit in the second light field synthesis graph corresponding to the display unit.

[0124] Step 1001, determining the ratio between the distance along the first direction between the imaging position of the display unit along the first direction on the viewing plane and the position of the first imaging point and the width of the first unit light field area, to obtain the first imaging position proportion value corresponding to the display unit.

[0125] wherein the first imaging point is the imaging starting point of the backlight area covering the display unit on the viewing plane.

[0126] For detailed description of this step, please refer to the related content in Figure 8 herein will not be repeated.

[0127] In step 1002, the first imaging position ratio value corresponding to the display unit is rounded off by using the first light field viewpoint density, and the first monocular view corresponding to the monocular view information filled in the position unit in the second light field synthesis diagram corresponding to the display unit is determined according to the rounding-off result.

[0128] In the implementation process, the rounding-off of the first imaging position ratio value corresponding to the display unit by using the first light field viewpoint density and the determination of the first monocular view corresponding to the monocular view information filled in the position unit in the second light field synthesis diagram corresponding to the display unit according to the rounding-off result can be performed by using the following formula:

[0129] (8)

[0130] wherein, is the reciprocal of the first light field viewpoint density, is the first imaging position ratio value corresponding to the display unit, x is the first monocular view corresponding to the monocular view information filled in the position unit in the second light field synthesis diagram corresponding to the display unit.

[0131] In the implementation process, the second imaging position ratio value corresponding to the display unit can be determined by determining the ratio between the distance along the second direction between the imaging position of the display unit along the second direction on the viewing plane and the position of the first imaging point and the width of the second unit light field area, and the first monocular view corresponding to the monocular view information filled in the position unit in the second light field synthesis diagram corresponding to the display unit is determined according to the rounding-off result of the second imaging position ratio value corresponding to the display unit by using the second light field viewpoint density.

[0132] In the implementation process, the above method can be performed to determine the second monocular view corresponding to the monocular view information filled in each position unit in the second light field synthesis diagram by using the following formula:

[0133] (9)

[0134] wherein, is the reciprocal of the second light field viewpoint density, is the second imaging position ratio value corresponding to the display unit, y is the second monocular view corresponding to the monocular view information filled in the position unit in the second light field synthesis diagram corresponding to the display unit.

[0135] For more detailed description of this step, refer to the related content in Figure 8 , which will not be described here.

[0136] The three-dimensional light field display device for increasing view point density provided by the present application is described below, and the three-dimensional light field display device for increasing view point density described below can be correspondingly referred to the three-dimensional light field display method for increasing view point density described above.

[0137] Figure 17 FIG. 1 is a structural schematic diagram of the three-dimensional light field display device for increasing view point density provided by the present application.

[0138] The device is arranged in a processor on a display device. For detailed description of the display device, please refer to the related content in Figure 1 , which will not be described here again.

[0139] As shown in Figure 17 , the device 1700 includes the following modules.

[0140] The acquisition module 1710 is configured to acquire a plurality of first monocular views carrying number information in the first direction.

[0141] The determination module 1720 is configured to determine the number of the first monocular view corresponding to the monocular view information filled in each position unit of the first light field synthesis graph according to the imaging position of each display unit of the display panel on the viewing plane along the first direction and the first light field view point density; wherein the first light field synthesis graph is a light field synthesis graph having a stereoscopic effect in the first direction.

[0142] The filling module 1730 is configured to fill the monocular view information in the plurality of first monocular views into the first light field synthesis graph according to the number of the first monocular view corresponding to the monocular view information filled in each position unit of the first light field synthesis graph.

[0143] The sending module 1740 is configured to send the first light field synthesis graph to the display panel module, instructing the display panel module to display the first light field synthesis graph on the display panel, so as to project each monocular view information displayed by the display panel to the viewing plane in the order of the number of the corresponding first monocular view by using the backlight area.

[0144] Figure 18 An example of an electronic device is shown in FIG. 1, which is a structural schematic diagram of the electronic device. Figure 18As shown, the electronic device can include a processor 1810, a communications interface 1820, a memory 1830, and a communications bus 1840, wherein the processor 1810, the communications interface 1820, and the memory 1830 complete mutual communication through the communications bus 1840. The processor 1810 can invoke a logical instruction in the memory 1830 to execute the method for improving the viewpoint density of a three-dimensional light field display, which includes: acquiring a plurality of first monocular views carrying numbering information in the first direction; determining the number of the first monocular view corresponding to the monocular view information filled in each position unit of the first light field synthesis graph according to the imaging position of each display unit on the display panel in the first direction on the viewing plane and the first light field viewpoint density; wherein the first light field synthesis graph is a light field synthesis graph with a stereoscopic effect in the first direction; filling the monocular view information in the plurality of first monocular views into the first light field synthesis graph according to the number of the first monocular view corresponding to the monocular view information filled in each position unit of the first light field synthesis graph; sending the first light field synthesis graph to the display panel module, instructing the display panel module to display the first light field synthesis graph on the display panel, so as to project each monocular view information displayed by the display panel on the viewing plane in accordance with the number order of the corresponding first monocular view by using the backlight area.

[0145] In addition, the logical instruction in the memory 1830 described above can be implemented in the form of a software functional unit and sold or used as an independent product, which can be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the present application essentially or the part that contributes to the prior art or part of the technical solutions can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a plurality of instructions to make a computer device (which can be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in various embodiments of the present application. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a magnetic disk or an optical disk, and various program code storage media.

[0146] In another aspect, the present application also provides a computer program product comprising a computer program, which can be stored on a non-transitory computer readable storage medium, and the computer program, when executed by a processor, enables a computer to perform the three-dimensional light field display method for improving the view point density, comprising: obtaining a plurality of first monocular views carrying numbering information in the first direction; determining the number of the first monocular view corresponding to the monocular view information filled in each position unit of the first light field synthesis graph according to the imaging position of each display unit of the display panel on the viewing plane along the first direction and the first light field view point density, wherein the first light field synthesis graph is a light field synthesis graph having a stereoscopic effect in the first direction; filling the monocular view information in the plurality of first monocular views into the first light field synthesis graph according to the number of the first monocular view corresponding to the monocular view information filled in each position unit of the first light field synthesis graph; and sending the first light field synthesis graph to the display panel module, instructing the display panel module to display the first light field synthesis graph on the display panel, so as to project each monocular view information displayed by the display panel on the viewing plane according to the numbering order of the corresponding first monocular view by using the backlight area.

[0147] In another aspect, the present application also provides a non-transitory computer readable storage medium having a computer program stored thereon, and the computer program, when executed by a processor, enables a computer to perform the three-dimensional light field display method for improving the view point density, comprising: obtaining a plurality of first monocular views carrying numbering information in the first direction; determining the number of the first monocular view corresponding to the monocular view information filled in each position unit of the first light field synthesis graph according to the imaging position of each display unit of the display panel on the viewing plane along the first direction and the first light field view point density, wherein the first light field synthesis graph is a light field synthesis graph having a stereoscopic effect in the first direction; filling the monocular view information in the plurality of first monocular views into the first light field synthesis graph according to the number of the first monocular view corresponding to the monocular view information filled in each position unit of the first light field synthesis graph; and sending the first light field synthesis graph to the display panel module, instructing the display panel module to display the first light field synthesis graph on the display panel, so as to project each monocular view information displayed by the display panel on the viewing plane according to the numbering order of the corresponding first monocular view by using the backlight area.

[0148] The device embodiments described above are merely illustrative, wherein the units described as separate components can or can not be physically separate, and the components displayed as units can or can not be physical units, i.e., can be located in one place, or can be distributed to multiple network units. Part or all of the modules can be selected to achieve the purposes of the embodiments according to actual needs. Those skilled in the art can understand and implement without creative labor.

[0149] Through the description of the above embodiments, those skilled in the art can clearly understand that the embodiments can be realized by means of software and the necessary general hardware platform, and of course can also be realized by hardware. Based on such understanding, the above technical solutions can be embodied in the form of a software product, which can be stored in a computer readable storage medium, such as a ROM / RAM, a magnetic disk, an optical disk, etc., and includes a number of instructions to make a computer device (which can be a personal computer, a server, or a network device, etc.) execute the methods described in each embodiment or some parts of the embodiments.

[0150] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A method of increasing the viewpoint density of a three-dimensional light field display, characterized in that, The method is applied to a processor on a display device, the display device comprising a dense array light control module and a display plane module arranged in parallel in sequence; wherein the display plane module comprises a display panel with point-to-point light control; the dense array light control module comprises a light waveguide with internal total reflection and a light control array, the light control array is attached to the light waveguide according to a preset distribution mode, so that the light emitted by the backlight light source of the display device, after passing through the attachment surface of the light control array and the light waveguide, forms a plurality of backlight areas with a preset angle of non-90 degrees with the vertical direction in the display panel under the refraction of the light control array, the backlight area projects the content of a plurality of display units on the display panel covered by the backlight area onto the viewing plane along a first direction with a first light field viewpoint density according to the preset angle; wherein the first light field viewpoint density is the number of viewpoints contained in a first unit light field area along the first direction on the viewing plane, the first unit light field area is the area formed by the backlight of any display unit projecting its content onto the viewing plane along the first direction, and the first light field viewpoint density is greater than 1; the method comprises: Obtaining a plurality of first monocular views carrying numbering information in the first direction; According to the imaging position of each display unit on the display panel on the viewing plane along the first direction and the first light field viewpoint density, determining the number of the first monocular view corresponding to the monocular view information filled in each position unit of the first light field synthesis graph; wherein the first light field synthesis graph is a light field synthesis graph with a stereoscopic effect in the first direction; According to the number of the first monocular view corresponding to the monocular view information filled in each position unit of the first light field synthesis graph, filling the monocular view information in the plurality of first monocular views into the first light field synthesis graph; Sending the first light field synthesis graph to the display plane module, instructing the display plane module to display the first light field synthesis graph on the display panel, so that each monocular view information displayed by the display panel is projected onto the viewing plane in the order of the number of the corresponding first monocular view by the backlight area.

2. The view-point density increasing three-dimensional light-field display method of claim 1, wherein, According to the imaging position of each display unit on the display panel on the viewing plane along the first direction and the first light field viewpoint density, determining the number of the first monocular view corresponding to the monocular view information filled in each position unit of the first light field synthesis graph, comprising: For the imaging position of each display unit on the display panel on the viewing plane along the first direction, the following operations are performed to determine the number of the first monocular view corresponding to the monocular view information filled in the position unit corresponding to the display unit in the first light field synthesis graph: determining a ratio between a distance along the first direction between an imaging position of the display unit on the viewing plane and a position of a first imaging point and a width of the first unit light field region, to obtain a first imaging position proportion value corresponding to the display unit, wherein the first imaging point is an imaging starting point of a backlight region covering the display unit on the viewing plane; performing an integer operation on the first imaging position proportion value corresponding to the display unit by using the first light field viewpoint density, and determining, according to a result of the integer operation, a number of a first monocular view corresponding to monocular view information filled in a position unit in a first light field composite image corresponding to the display unit.

3. The view-point density increasing three-dimensional light-field display method of claim 2, wherein, The step of performing the integer operation on the first imaging position proportion value corresponding to the display unit by using the first light field viewpoint density, and determining, according to a result of the integer operation, a number of a first monocular view corresponding to monocular view information filled in a position unit in a first light field composite image corresponding to the display unit is performed by using the following formula: wherein, is the reciprocal of the first light field viewpoint density, is the first imaging position proportion value, and n is the number of the first monocular view corresponding to the monocular view information filled in the position unit in the first light field synthesis diagram corresponding to the display unit.

4. The view-point density increasing three-dimensional light-field display method of claim 3, wherein, The imaging position of any display unit on the viewing plane along the first direction is obtained in the following way: The imaging position of the display unit on the viewing plane along the first direction is obtained according to a distance between a left upper corner of the display unit and a left side edge of the light control array in the first direction.

5. A method of increasing the viewpoint density of a three-dimensional light field display, characterized in that, The method is applied to a processor on a display device, and the display device includes a dense array light control module and a display plane module arranged in parallel in sequence; wherein the display plane module includes a display panel with point-to-point light control; the dense array light control module includes an internally totally reflecting light waveguide and a light control array, the light control array is attached to the light waveguide in a preset distribution manner, so that the light emitted by the backlight light source of the display device, after passing through the attachment surface of the light control array and the light waveguide, forms a plurality of backlight regions with a preset angle of non-90 degrees with the vertical direction in the display panel under the refraction of the light control array, the backlight regions project the content of a plurality of display units on the display panel onto a viewing plane in a first direction with a first light field viewpoint density and in a second direction with a second light field viewpoint density according to the preset angle; wherein the first light field viewpoint density is the number of viewpoints contained in a first unit light field region on the viewing plane in the first direction, the first unit light field region is a region formed by the backlight of any display unit projecting its content onto the viewing plane along the first direction, the first light field viewpoint density is greater than 1, and the second light field viewpoint density is the number of viewpoints contained in a second unit light field region on the viewing plane in the second direction, the second unit light field region is a region formed by the backlight of any display unit projecting its content onto the viewing plane along the second direction, the second light field viewpoint density is greater than 1; a plurality of first monocular views carrying number information in the first direction and a plurality of second monocular views carrying number information in the second direction are obtained; determine, according to the imaging positions of the display units on the display panel along the first direction on the viewing plane and the first light field viewpoint density, the number of the first monocular view corresponding to the monocular view information filled in the position unit in the second light field synthesis graph; wherein the second light field synthesis graph is a light field synthesis graph with stereoscopic effect in both the first direction and the second direction; determine, according to the imaging positions of the display units on the display panel along the second direction on the viewing plane and the second light field viewpoint density, the number of the second monocular view corresponding to the monocular view information filled in the position unit in the second light field synthesis graph; fill, according to the number of the first monocular view and the number of the second monocular view corresponding to the monocular view information filled in the position unit in the second light field synthesis graph, the monocular view information in the plurality of first monocular views and the monocular view information in the plurality of second monocular views into the second light field synthesis graph by using a preset light field synthesis algorithm; send the second light field synthesis graph to the display plane module, instruct the display plane module to display the second light field synthesis graph on the display panel, and use the backlight area to project each monocular view information displayed by the display panel onto the viewing plane in the order of the number of the first monocular view corresponding to the monocular view information along the first direction and in the order of the number of the second monocular view corresponding to the monocular view information along the second direction.

6. The view-point density increasing three-dimensional light-field display method of claim 5, wherein, The determining, according to the imaging positions of the display units on the display panel along the first direction on the viewing plane and the first light field viewpoint density, the number of the first monocular view corresponding to the monocular view information filled in the position unit in the second light field synthesis graph, comprises: For the imaging position of each display unit on the display panel along the first direction on the viewing plane, the following operations are performed to determine the number of the first monocular view corresponding to the monocular view information filled in the position unit in the second light field synthesis graph corresponding to the display unit: determine the ratio between the distance between the imaging position of the display unit along the first direction on the viewing plane and the position of the first imaging point and the width of the first unit light field area, to obtain the first imaging position proportion value corresponding to the display unit; wherein the first imaging point is the imaging starting point of the backlight area covering the display unit on the viewing plane; perform an integer operation on the first imaging position proportion value corresponding to the display unit by using the first light field viewpoint density, and determine the number of the first monocular view corresponding to the monocular view information filled in the position unit in the second light field synthesis graph corresponding to the display unit according to the result of the integer operation.

7. A three-dimensional light field display device for increasing the viewpoint density, characterized in that The device is arranged in a processor on a display device, the display device comprising a dense array light control module and a display plane module arranged in parallel in sequence; wherein the display plane module comprises a display panel with point-to-point light control; the dense array light control module comprises a light waveguide with internal total reflection and a light control array, the light control array is attached to the light waveguide according to a preset distribution mode, so that the light emitted by the backlight light source of the display device, after passing through the attachment surface of the light control array and the light waveguide, forms a plurality of backlight areas with a non-90-degree preset angle with the vertical direction in the display panel under the refraction of the light control array, the backlight area projects the content of a plurality of display units on the display panel covered by the backlight area to the viewing plane along a first direction with a first light field viewpoint density according to the preset angle; wherein the first light field viewpoint density is the number of viewpoints contained in a first unit light field area along the first direction on the viewing plane, the first unit light field area is the area formed by the backlight of any display unit projecting its content to the viewing plane along the first direction, and the first light field viewpoint density is greater than 1; the device comprises: An acquisition module for acquiring a plurality of first monocular views carrying numbering information in the first direction; A determination module for determining the number of the first monocular view corresponding to the monocular view information filled in each position unit of the first light field synthesis graph according to the imaging position of each display unit on the display panel on the viewing plane along the first direction and the first light field viewpoint density; wherein the first light field synthesis graph is a light field synthesis graph with a stereoscopic effect in the first direction; A filling module for filling the monocular view information in the plurality of first monocular views into the first light field synthesis graph according to the number of the first monocular view corresponding to the monocular view information filled in each position unit of the first light field synthesis graph; A sending module for sending the first light field synthesis graph to the display plane module, instructing the display plane module to display the first light field synthesis graph on the display panel, so that each monocular view information displayed by the display panel is projected onto the viewing plane in the order of the number of the corresponding first monocular view by the backlight area.

8. An electronic device comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, characterized in that, The processor executes the program to implement the three-dimensional light field display method for improving the viewpoint density according to any one of claims 1 to 6. 9.A non-transitory computer-readable storage medium having stored thereon a computer program, characterized in that, The computer program is executed by the processor to implement the three-dimensional light field display method for improving the viewpoint density according to any one of claims 1 to 6.

10. A computer program product comprising a computer program, characterized in that, The computer program is executed by the processor to implement the three-dimensional light field display method for improving the viewpoint density according to any one of claims 1 to 6.

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