Three-dimensional display device and display method thereof

Abstract

The invention discloses a three-dimensional display device and a display method thereof. The method comprises the following steps: receiving image data of an image to be displayed; according to the image data of the to-be-displayed image, determining original backlight data of a plurality of partitions corresponding to each viewpoint; performing weighted averaging on the original backlight data of the plurality of partitions corresponding to each viewpoint to obtain adjusted backlight data of the plurality of partitions; compensating image data of the to-be-displayed image according to the adjusted backlight data to obtain adjusted image data; and sending the adjusted backlight data to a backlight module, and sending the adjusted image data to a display panel so as to drive the three-dimensional display device to display an image. Therefore, naked-eye 3D display in a high dynamic range can be realized, picture light crosstalk under different visual angles is reduced, and the naked-eye 3D display picture quality is greatly improved.

Description

Technical Field

[0001] The present invention relates to the field of display technologies, and in particular, to a three-dimensional display device and a display method thereof. Background Art

[0002] With the development of display technologies, users' demands for display devices tend to be diversified. Therefore, a naked-eye 3D display device that can directly view a stereoscopic image without the aid of external devices has emerged.

[0003] High-dynamic range image display enables the display screen to have higher brightness and contrast. To achieve high-dynamic range image display, the display device can cooperate with local dimming technology to improve the display contrast. However, since a naked-eye 3D display device usually has multiple viewpoints, the display images viewed in each viewpoint direction are different. And local dimming can only be controlled through the content of a single image, which easily causes uneven transition of the display brightness when the viewer changes the viewpoint, thereby reducing the image quality and user experience of three-dimensional display. Summary of the Invention

[0004] In a first aspect of an embodiment of the present invention, a display method of a three-dimensional display device is provided. The three-dimensional display device includes: a backlight module, a display panel located on the light-emitting side of the backlight module, a light control structure located on the side of the display panel away from the backlight module, and a processor connecting the backlight module and the display panel; wherein, the backlight module is used to provide backlight; the display panel is used to modulate the brightness of the outgoing light; the light control structure is used to deflect incident light in multiple directions to form multiple viewpoints to achieve three-dimensional display;

[0005] Wherein, the backlight module includes multiple light sources, the multiple light sources are divided into multiple zones, and the brightness of the multiple zones is independently controlled; the processor is configured to:

[0006] Receive the image data of the image to be displayed;

[0007] Respectively determine the original backlight data of the multiple zones corresponding to each viewpoint according to the image data of the image to be displayed;

[0008] Take the weighted average of the original backlight data of the multiple zones corresponding to each viewpoint to obtain the adjusted backlight data of the multiple zones;

[0009] Compensate the image data of the image to be displayed according to the adjusted backlight data to obtain adjusted image data;

[0010] Send the adjusted backlight data to the backlight module, and send the adjusted image data to the display panel to drive the three-dimensional display device to perform image display.

[0011] In some embodiments of the present invention, the adjusted backlight data satisfies:

[0012]

[0013] where S represents the adjusted backlight data, S i represents the original backlight data corresponding to the i-th viewing point, r i represents the weight of the i-th viewing point, and N represents the number of viewing points; N is an integer greater than 1, and the value of i ranges from 1 to N.

[0014] In some embodiments of the present invention, the weights of the original backlight data of each viewing point are all 1.

[0015] In some embodiments of the present invention, the three-dimensional display device further includes an image acquisition device, and the image acquisition device is connected to the processor;

[0016] The image acquisition device is used to acquire an image of the audience and send it to the processor; the processor is further configured to:

[0017] Determine the viewing point corresponding to the position where the audience is located according to the acquired image of the audience;

[0018] Increase the weight of the original backlight data of the viewing point corresponding to the position where the audience is located according to the current display mode; the current display mode is the display mode selected when the audience views the three-dimensional display device.

[0019] In some embodiments of the present invention, the display mode includes a first display mode, a second display mode, and a third display mode;

[0020] The increasing the weight of the original backlight data of the viewing point corresponding to the position where the audience is located according to the current display mode includes:

[0021] When the current display mode is the first display mode, increase the weight of the original backlight data of the viewing point corresponding to the position where the audience is located to be greater than 1 and less than or equal to 50, and keep the weights of the original backlight data of the remaining viewing points all 1;

[0022] When the current display mode is the second display mode, increase the weight of the original backlight data of the viewing point corresponding to the position where the audience is located to be greater than 50 and less than or equal to 100, and keep the weights of the original backlight data of the remaining viewing points all 1;

[0023] When the current display mode is the third display mode, increase the weight of the original backlight data of the viewing point corresponding to the position where the audience is located to be greater than 100, and keep the weights of the original backlight data of the remaining viewing points all 1.

[0024] In some embodiments of the present invention, after taking the weighted average of the original backlight data of the multiple partitions corresponding to each viewpoint, before compensating the image data of the to-be-displayed image according to the adjusted backlight data, it further includes:

[0025] Performing a filtering process on the backlight data after weighted average; the filtering process includes spatial filtering and temporal filtering.

[0026] In some embodiments of the present invention, compensating the image data of the to-be-displayed image according to the adjusted backlight data includes:

[0027] Performing a convolution process on the adjusted backlight data and a pre-determined light diffusion model to obtain cumulative backlight data;

[0028] Determining the corresponding relationship of pixel gain data according to the cumulative backlight data and the original backlight data;

[0029] Compensating the image data according to the determined corresponding relationship of pixel gain data.

[0030] In some embodiments of the present invention, after compensating the image data according to the determined corresponding relationship of pixel gain data, it further includes:

[0031] Performing an overflow protection process on the compensated image data.

[0032] In some embodiments of the present invention, the light diffusion model is determined in the following manner:

[0033] Turning on the partition located at the center position of the backlight module;

[0034] Sequentially collecting the light energy distributions of each viewpoint;

[0035] Fitting the light energy distributions of each viewpoint to obtain the light diffusion model.

[0036] In a second aspect of the embodiments of the present invention, a three-dimensional display device is provided, including:

[0037] A backlight module for providing backlight; the backlight module includes a plurality of light sources, and the plurality of light sources are divided into a plurality of partitions;

[0038] A display panel located on the light-emitting side of the backlight module; the display panel is used to modulate the brightness of the outgoing light;

[0039] A light control structure located on the side of the display panel away from the backlight module; the light control structure is used to deflect incident light in multiple directions to form multiple viewpoints to achieve three-dimensional display;

[0040] A processor, which is respectively connected to the backlight module and the display panel; the processor is configured to receive image data of an image to be displayed; respectively determine original backlight data of the multiple partitions corresponding to each viewing point according to the image data of the image to be displayed; take a weighted average of the original backlight data of the multiple partitions corresponding to each viewing point to obtain adjusted backlight data of the multiple partitions; compensate the image data of the image to be displayed according to the adjusted backlight data to obtain adjusted image data; send the adjusted backlight data to the backlight module and send the adjusted image data to the display panel to drive the 3D display device to perform image display.

[0041] The 3D display device and its display method provided by the embodiments of the present invention receive image data of an image to be displayed; respectively determine original backlight data of multiple partitions corresponding to each viewing point according to the image data of the image to be displayed; take a weighted average of the original backlight data of the multiple partitions corresponding to each viewing point to obtain adjusted backlight data of the multiple partitions; compensate the image data of the image to be displayed according to the adjusted backlight data to obtain adjusted image data; send the adjusted backlight data to the backlight module and send the adjusted image data to the display panel to drive the 3D display device to perform image display. Thereby, high-dynamic-range naked-eye 3D display can be achieved, light crosstalk of the picture under different viewing angles can be reduced, and the display quality of naked-eye 3D can be greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly introduced below. Obviously, the drawings introduced below are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0043] Figure 1 It is one of the schematic structural diagrams of the 3D display device provided by the embodiments of the present invention;

[0044] Figure 2 It is the schematic structural diagram of the display screen provided by the embodiments of the present invention;

[0045] Figure 3 It is the schematic structural diagram of the backlight module provided by the embodiments of the present invention;

[0046] Figure 4 It is the schematic plan view of the lamp board provided by the embodiments of the present invention;

[0047] Figure 5 It is the schematic structural diagram of the display panel provided by the embodiments of the present invention;

[0048] Figure 6 It is one of the schematic diagrams of the light control principle provided by the embodiments of the present invention;

[0049] Figure 7 It is the second schematic diagram of the light control principle provided by the embodiment of the present invention;

[0050] Figure 8 It is one of the flowcharts of the display method of the three-dimensional display device provided by the embodiment of the present invention;

[0051] Figure 9 It is the second schematic diagram of the structure of the three-dimensional display device provided by the embodiment of the present invention;

[0052] Figure 10 It is the second flowchart of the display method of the three-dimensional display device provided by the embodiment of the present invention;

[0053] Figure 11 It is the third flowchart of the display method of the three-dimensional display device provided by the embodiment of the present invention. Detailed implementation manners

[0054] To make the above objects, features and advantages of the present invention more obvious and understandable, the present invention will be further described below with reference to the drawings and embodiments. However, the exemplary embodiments can be implemented in various forms and should not be construed as limited to the embodiments described herein; on the contrary, these embodiments are provided to make the present invention more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings represent the same or similar structures, so their repeated descriptions will be omitted. The words expressing positions and directions described in the present invention are all illustrated with reference to the drawings, but can be changed according to needs, and all changes made are included in the protection scope of the present invention. The drawings of the present invention are only used to illustrate the relative positional relationship and do not represent the true scale.

[0055] With the continuous development of display technology, three-dimensional display devices have been applied to fields such as medical treatment, military, education, advertising, and games. Compared with two-dimensional display, three-dimensional display can make the picture become three-dimensional and vivid, and the image is no longer limited to the plane of the screen, but is closer to the real world that the human eye can see.

[0056] Three-dimensional display can currently be divided into wearable three-dimensional display and autostereoscopic three-dimensional display. Wearable three-dimensional display requires wearing auxiliary devices such as glasses to view the three-dimensional display. Its main principle is to divide the image into a left-eye image and a right-eye image, and use auxiliary devices such as glasses to separate the above images, so that the left eye receives the left-eye image and the right eye receives the right-eye image. There is a certain parallax between the left-eye image and the right-eye image, and a stereoscopic image is formed through the fusion of the brain. Autostereoscopic three-dimensional display uses a light control structure to form multiple viewpoints, so that different images can be viewed at different viewpoint positions without the need for other devices.

[0057] An embodiment of the present invention provides a display device which is a naked-eye 3D display device. The display device uses a liquid crystal display (LCD for short) to display images. The light source of the backlight module of the LCD can use MiniLED (Mini Light Emitting Diode for short). Mini LED has a smaller size. When combined with the local dimming technology, the backlight can be divided into finer zones, realizing higher-quality HDR image display.

[0058] Figure 1 It is one of the structural schematic diagrams of the three-dimensional display device provided by the embodiment of the present invention.

[0059] As Figure 1 shown, the three-dimensional display device includes: a display screen 1 and a light control structure 2. The display screen 1 is used to emit light for image display. The light control structure 2 is located on the light-emitting side of the display screen 1 and can deflect the light emitted by the display screen 1 in multiple different directions, thereby forming multiple viewpoints and realizing three-dimensional display.

[0060] In the embodiment of the present invention, the display screen can use an LCD display screen. Figure 2 It is the structural schematic diagram of the display screen provided by the embodiment of the present invention.

[0061] As Figure 2 shown, the display screen includes: a backlight module 11, a display panel 12, and a processor 13. The backlight module 11 is used to provide backlight. The display panel 12 is located on the light-emitting side of the backlight module 11 and is used to modulate the light emitted by the backlight module, thereby changing the brightness of the emitted light. The processor 13 is respectively connected to the backlight module 11 and the display panel 12. The processor 12 can be the main controller of the display screen. Micro control units are respectively provided in the backlight module 11 and the display panel 12. The processor 12 can process image data and drive the display screen 1 to display images by sending the processed image data to the backlight module 11 and the display panel 12.

[0062] Figure 3 It is the structural schematic diagram of the backlight module provided by the embodiment of the present invention.

[0063] In specific implementation, the backlight module can use a direct-lit backlight module or an edge-lit backlight module. Compared with the edge-lit backlight module, the direct-lit backlight module can set a larger number of light sources, so it has higher brightness and is conducive to zoning control of the light sources. In the embodiment of the present invention, taking the backlight module using a direct-lit backlight module as an example, as Figure 3 shown, the backlight module 11 can include: a backplane 111, a light source 112, a reflector 113, a diffusion plate 114, and an optical film 115.

[0064] The backplane 111 has the functions of supporting and carrying. The light source 112 is located on the backplane 111. The light source 112 of the direct - type backlight module can adopt a lamp board, which has a relatively high brightness. In the embodiment of the present invention, the light source adopts Mini LED. The size of the Mini LED is smaller than that of the traditional LED. Using a huge number of Mini LEDs as the backlight can achieve more refined dynamic control and improve the dynamic contrast of liquid crystal display.

[0065] Figure 4 It is a schematic plan view of the lamp board provided by the embodiment of the present invention.

[0066] As Figure 4 shown, the light sources 112 are arranged in an array on the lamp board. A plurality of adjacent light sources 112 form a partition s. The light sources 112 within each partition are connected in series with each other. The brightness of each partition can be controlled separately, and the brightness of the light sources 112 within the same partition is the same. Figure 4 Taking four adjacent light sources 112 as an example to be divided into a partition s for illustration. In specific implementation, the number of light source data within the partition can be more or less, which is not limited herein.

[0067] As Figure 3 shown, the reflector 113 has a plurality of openings exposing the light sources 112. The reflector 113 is located on the backplane 111 and exposes each light source 112. The reflector 113 can reflect the light incident on the side of the backplane 111 back to the side of the display panel, improving the light efficiency. The diffusion plate 114 is located on the light - emitting side of the light source 112, and there is a certain distance between the diffusion plate 114 and the light source 112. This distance is the light - mixing distance, which is used to make the emitted light of the light source 112 mix evenly. The optical film 115 is located on the side of the diffusion plate 114 away from the light source 112. The optical film 115 is usually a composite film, which can include one or more of a prism sheet, a quantum dot film, a reflective polarizer, etc.

[0068] Figure 5 It is a schematic structural view of the display panel provided by the embodiment of the present invention.

[0069] As Figure 5 shown, the display panel 12 is a liquid crystal display panel, including: an array substrate 121, a color filter substrate 122, and a liquid crystal layer 123. The liquid crystal layer 123 is clamped between the array substrate 121 and the color filter substrate 122. A driving circuit is usually provided on the array substrate 121, and a color film layer or a color filter is provided on the color filter substrate 112. An electric field is generated between the array substrate 121 and the color filter substrate 122 to cause the liquid crystal molecules in the liquid crystal layer 123 to twist, thereby regulating the transmittance of the liquid crystal layer and achieving brightness control.

[0070] In specific implementation, the light control structure 2 can adopt a microlens array or a grating. Setting a microlens array or a grating on the light-emitting side of the display screen 1 can achieve deflection control of light. Among them, the microlens can be a hemispherical lens, a cylindrical lens, or a prism. The grating can adopt a slit grating or a two-dimensional grating.

[0071] Figure 6 One of the schematic diagrams of the light control principle provided by the embodiment of the present invention; Figure 7 One of the schematic diagrams of the light control principle provided by the embodiment of the present invention;

[0072] As Figure 6 shown, when a microlens array is set on the light-emitting side of the display screen, according to the number of required viewpoints, each microlens can correspond to multiple light-emitting units. Figure 5 Taking the example that each microlens w corresponds to five light-emitting units A1 to A5 to generate five viewpoints for illustration. Each light-emitting unit is a pixel, which is composed of a red sub-pixel pr, a green sub-pixel pg, and a blue sub-pixel pb arranged in sequence. After the emitted light of the five light-emitting units A1 to A5 is incident on the microlens w, it deflects in five different directions, thereby generating five viewpoints S1 to S5. When taking these five light-emitting units A1 to A5 and their corresponding microlens w as a display unit, the display device can include multiple display units arranged in an array. Thus, the image of the display device can be viewed in the directions of the five viewpoints, and the display images viewed at each viewpoint position are different, thereby realizing multi-viewpoint naked-eye 3D display.

[0073] As Figure 7 shown, when a grating is set on the light-emitting side of the display screen, the grating can be divided into multiple sub-gratings n. According to the number of required viewpoints, each sub-grating n can correspond to multiple light-emitting units. Figure 7 Still taking the example that each sub-grating n corresponds to five light-emitting units A1 to A5 to generate five viewpoints for illustration. Similarly, each light-emitting unit is a pixel, which is composed of a red sub-pixel pr, a green sub-pixel pg, and a blue sub-pixel pb arranged in sequence. The emitted light of the five light-emitting units A1 to A5 can pass through the corresponding light-transmitting area in the sub-grating n and be emitted in five different directions, thereby generating five viewpoints S1 to S5. When taking these five light-emitting units A1 to A5 and their corresponding sub-grating n as a display unit, the display device can include multiple display units arranged in an array. Thus, the image of the display device can be viewed in the directions of the five viewpoints, and the display images viewed at each viewpoint position are different, thereby realizing multi-viewpoint naked-eye 3D display.

[0074] In the embodiments of the present invention, a three-dimensional display device is combined with a regional dimming technology, which can improve the effect of three-dimensional display. However, according to the above analysis, the images displayed by the three-dimensional display device at different viewpoint positions are different, and the regional dimming technology analyzes the brightness distribution of the currently displayed image, and then correspondingly adjusts the brightness of each backlight zone according to the brightness distribution of the displayed image to achieve a higher image contrast. When the images displayed at different viewpoints are different, the light control of each zone can only be performed according to the displayed image corresponding to a single viewpoint. Then, when the viewer switches viewpoints, it will cause an uneven transition of the display brightness, which instead reduces the image quality and user experience of the three-dimensional display.

[0075] In view of this, the embodiments of the present invention provide a display method for a three-dimensional display device, which can process backlight data to improve image crosstalk between different viewpoints.

[0076] Figure 8 It is one of the flowcharts of the display method for the three-dimensional display device provided by the embodiments of the present invention.

[0077] As Figure 8 shown, the display method provided by the embodiments of the present invention includes:

[0078] S10. Receive the image data of the image to be displayed;

[0079] S20. Respectively determine the original backlight data of multiple zones corresponding to each viewpoint according to the image data of the image to be displayed;

[0080] S30. Take the weighted average of the original backlight data of multiple zones corresponding to each viewpoint to obtain the adjusted backlight data of multiple zones;

[0081] S40. Compensate the image data of the image to be displayed according to the adjusted backlight data to obtain the adjusted image data;

[0082] S50. Send the adjusted backlight data to the backlight module and send the adjusted image data to the display panel to drive the three-dimensional display device to perform image display.

[0083] When driving a three-dimensional display device to perform image display, usually the processor 13 receives the image data of the image to be displayed. The processor 13 separates the backlight data and the image data, and after processing, sends the backlight data to the backlight module 11 and the image data to the display panel 12, thereby driving the image display. The processor 13 can pre-configure an algorithm to separate the image data corresponding to each viewpoint, and then determine the corresponding backlight data according to the image data corresponding to each viewpoint. The backlight data includes the brightness data of each backlight zone. The weighted average of the backlight data of each viewpoint is taken to obtain the adjusted backlight data. This backlight data reflects the average level of the brightness of the displayed images of each viewpoint. After the backlight data is adjusted, the image data of the display panel also needs to be compensated accordingly. Finally, while driving the backlight module 11 with the adjusted backlight data, the display panel 12 is driven with the adjusted image data to perform image display, which can optimize the display effect.

[0084] When there is a large brightness jump in the displayed image corresponding to a viewpoint, problems such as flickering and unnatural transition will occur during viewpoint switching, and crosstalk will also occur in the image data of adjacent viewpoints. By adjusting the backlight data, the image crosstalk of adjacent viewpoints can be improved, and the problems caused by the brightness jump can be weakened.

[0085] Specifically, the adjusted backlight data satisfies:

[0086]

[0087] Among them, S represents the adjusted backlight data, S i represents the original backlight data corresponding to the i-th viewpoint, r i represents the weight of the i-th viewpoint, and N represents the number of viewpoints; N is an integer greater than 1, and the value of i ranges from 1 to N.

[0088] The original backlight data S of each of the above viewpoints i can be determined by the processor 13 according to the image data corresponding to the viewpoint. The algorithm for determining the backlight data from the image data can be solidified in the processor 13. When the processor 13 receives the image data of the image to be displayed, it can automatically determine the original backlight data of each viewpoint.

[0089] When performing weighted average processing on the original backlight data of each viewpoint, the weights r i of the original backlight data of each of the above viewpoints can all be 1, so that the backlight of each viewpoint can be more balanced.

[0090] In some embodiments, such as Figure 4As shown, the three-dimensional display device further includes an image acquisition device 14 connected to the processor 13. The image acquisition device 14 can acquire the images of the audience and send them to the processor 13. The processor 13 can perform image processing on the received images to determine the viewpoints corresponding to the positions of the audience. After determining the positions of the audience, the weight of the original backlight data corresponding to the viewpoints of the positions where the audience is located can be increased according to the current display mode, so that the images that the audience can view at the current viewpoint positions can be optimized.

[0091] In practical applications, the three-dimensional display device can be pre-configured with multiple display modes. The image contrast and display styles of different display modes are different. When the user first views the three-dimensional display device, the user can select the required display mode in the menu. Then, when displaying images, the weight of the original backlight data corresponding to the viewpoints of the positions where the audience is located will be increased according to the current display mode, so as to make the images at the current viewpoints where the audience is located more prominent.

[0092] Specifically, the three-dimensional display device can be pre-configured with multiple display modes. The brightness and contrast of the images when different display modes display images are different, and the brightness response curves (gamma curves) satisfied by different display modes are also different, corresponding to different display styles. In the embodiments of the present invention, an example is given in which the three-dimensional display device is pre-configured with three display modes. The three display modes are the first display mode, the second display mode, and the third display mode. When displayed in the menu bar, the three display modes can use words representing their display styles. In the embodiments of the present invention, they are only defined as the first display mode, the second display mode, and the third display mode in order to distinguish the three display modes. Among them, the contrast and brightness of the images displayed in the first display mode are less than the contrast and brightness of the images displayed in the second display mode, and the contrast and brightness of the images displayed in the second display mode are less than the contrast and brightness of the images displayed in the third display mode.

[0093] When adjusting the weight of the original backlight data corresponding to the viewpoints of the current position according to the display mode, if the current display mode is the first display mode, the weight of the original backlight data corresponding to the viewpoints of the positions where the audience is located is increased to a value greater than 1 and less than or equal to 50, and the weights of the original backlight data of the remaining viewpoints are all kept as 1; if the current display mode is the second display mode, the weight of the original backlight data corresponding to the viewpoints of the positions where the audience is located is increased to a value greater than 50 and less than or equal to 100, and the weights of the original backlight data of the remaining viewpoints are all kept as 1; if the current display mode is the third display mode, the weight of the original backlight data corresponding to the viewpoints of the positions where the audience is located is increased to a value greater than 100, and the weights of the original backlight data of the remaining viewpoints are all kept as 1.

[0094] The larger the weight value of the original backlight data corresponding to the viewing point, the greater the proportion of the original backlight data corresponding to the viewing point in the original backlight data of all viewing points, so that the brightness of the display image corresponding to the viewing point can be made more prominent. In specific implementation, the weight value of the original backlight data corresponding to the viewing point cannot be increased infinitely, otherwise most of the brightness of the viewing point will overflow the displayable brightness range, resulting in excessive loss of image details. When adjusting the weight value of the original backlight data of the viewing point, corresponding adjustments can be made according to the weight value intervals corresponding to the above three display modes and the maximum brightness of the backlight. The adjustment algorithm can be solidified in the processor program to achieve a better adjustment effect through training models and other methods.

[0095] In specific implementation, the position of the audience can be monitored in real time to determine the viewing point position where the audience is located, so as to dynamically adjust the weights of the backlight data of each viewing point and improve the 3D display effect.

[0096] In the embodiment of the present invention, after taking the weighted average of the original backlight data of multiple partitions corresponding to each viewing point, the weighted average backlight data can also be filtered to make the brightness transition between different regions of the display image and between adjacent image frames more natural.

[0097] Among them, the filtering process includes spatial filtering and temporal filtering. In specific implementation, after performing spatial filtering on the backlight data, gamma adjustment can be performed on the backlight, and then temporal filtering can be performed, and finally the peak gain can be calculated. The specific process can be referred to Figure 10 as Figure 10 shown, the processing method of the backlight data can include:

[0098] S10. Receive the image data of the image to be displayed;

[0099] S20. Determine the original backlight data of multiple partitions corresponding to each viewing point according to the image data of the image to be displayed;

[0100] S30. Take the weighted average of the original backlight data of multiple partitions corresponding to each viewing point;

[0101] S31. Perform spatial filtering on the weighted average backlight data;

[0102] S32. Adjust the brightness response according to the backlight data after spatial filtering;

[0103] S33. Perform temporal filtering on the backlight data after spatial filtering to obtain the adjusted backlight data.

[0104] Since the displayed images are divided into multiple regions according to the backlight partitions, the overall brightness of adjacent regions may be different from each other, with a deviation. Then, spatial filtering processing can adjust this deviation, weaken the strong differences between adjacent regions, and avoid the brightness jump between different regions in the same image. Temporal filtering processing is to adjust the brightness difference between the current frame and the previous and next frames of images, and avoid the problem of flicker when the overall brightness of the displayed image changes greatly.

[0105] In addition, the brightness response can be adjusted according to the backlight data, and specifically, gamma adjustment can be performed. After the weighted average processing and filtering processing of the backlight data, the brightness distribution of the backlight data has changed. In order for the viewer to distinguish the bright and dark details in the interval where the brightness is relatively concentrated, the gamma curve needs to be corrected.

[0106] Furthermore, after performing the above processing on the backlight data, the peak gain can be calculated, and the image data of the image to be displayed can be compensated according to the backlight data. Specifically, reference can be made to Figure 11 , as Figure 11 shown, the processing method of the image data may include:

[0107] S401. Convolve the adjusted backlight data with a pre-determined light diffusion model to obtain the backlight cumulative data;

[0108] S402. Determine the pixel gain data correspondence according to the backlight cumulative data and the original backlight data;

[0109] S403. Compensate the image data according to the determined pixel gain data correspondence;

[0110] S404. Perform overflow protection processing on the compensated image data.

[0111] Different from ordinary two-dimensional image display, since a light control structure is provided on the light-emitting side of the display panel in a three-dimensional display device, the light control structure will redistribute the light field of the emitted light. Therefore, the compensation of the image data needs to be calculated according to the distribution of the light after the light control structure diffuses the light.

[0112] In the embodiment of the present invention, the light diffusion model can be determined in the following manner:

[0113] Light up the partition at the central position of the backlight module;

[0114] Collect the light energy distribution of each viewing point in sequence;

[0115] Fit the light energy distributions of each viewing point to obtain the light diffusion model.

[0116] The light energy distribution of each backlight zone after passing through its corresponding light control structure is theoretically the same. Due to the existence of the light control structure, the light will also spread. Therefore, one backlight zone may also affect the light energy distribution of adjacent backlight zones. The light energy distribution refers to the light energy values at different positions. Then, when determining the light diffusion model in the embodiments of the present invention, the backlight zone located at the central position is lit, and the light energy distribution at each viewing point position is collected. For example, if the three-dimensional display device can generate 50 viewing points, then the light energy distribution needs to be collected for 50 viewing points respectively, and the action of collecting the light energy distribution needs to be executed 50 times. Then, the light energy distributions of the above-mentioned viewing points are fitted to obtain the light diffusion model.

[0117] When displaying an image, the brightness felt by the human eye is the cumulative brightness of the light rays incident from different directions at the position where the human eye is located. Therefore, in the embodiments of the present invention, the adjusted backlight data obtained after processing is convolved with the light diffusion model to obtain the backlight cumulative data. According to the backlight cumulative data, the brightness of each pixel can be determined, so as to determine the corresponding relationship between the original brightness and the adjusted brightness of each pixel, that is, the pixel gain data corresponding relationship, and then the image data is compensated according to this corresponding relationship. However, after modifying the image data, the brightness may exceed the maximum brightness or the minimum brightness. Therefore, it is necessary to perform overflow protection processing on these image data, display the data exceeding the maximum brightness according to the maximum brightness, display the data exceeding the minimum brightness according to the minimum brightness, or recalculate the brightness of each gray level according to a preset algorithm, which is not limited here.

[0118] Finally, the adjusted backlight data is sent to the backlight module, and the adjusted image data is sent to the display panel to drive the three-dimensional display device to display an image. Thus, high-dynamic-range naked-eye 3D display can be realized, the light crosstalk of the picture under different viewing angles can be reduced, and the display quality of naked-eye 3D can be greatly improved.

[0119] Based on the same inventive concept, the embodiments of the present invention also provide a three-dimensional display device, as Figure 2 shown, the three-dimensional display device includes: a backlight module 11, a display panel 12, and a processor 13. The processor 13 is respectively connected to the backlight module 11 and the display panel 12.

[0120] Among them, the backlight module 11 is used to provide backlight. In the embodiments of the present invention, as Figure 4 shown, the backlight module includes a plurality of light sources 112, and the plurality of light sources 112 are divided into a plurality of zones s. The display panel 12 is located on the light-emitting side of the backlight module 11, and the display panel 12 is used to modulate the brightness of the outgoing light. The light control structure 2 is located on the side of the display panel 12 facing away from the backlight module 11; the light control structure 2 is used to deflect the incident light in multiple directions to form multiple viewing points to achieve three-dimensional display.

[0121] The processor 13 is respectively connected to the backlight module 11 and the display panel 12. The processor 13 is configured to receive the image data of the image to be displayed; respectively determine the original backlight data of multiple partitions corresponding to each viewpoint according to the image data of the image to be displayed; take the weighted average of the original backlight data of multiple partitions corresponding to each viewpoint to obtain the adjusted backlight data of multiple partitions; compensate the image data of the image to be displayed according to the adjusted backlight data to obtain the adjusted image data; send the adjusted backlight data to the backlight module and send the adjusted image data to the display panel to drive the three-dimensional display device to perform image display.

[0122] The display method of the three-dimensional display device provided by the embodiments of the present invention can achieve high-dynamic-range naked-eye 3D display, reduce the picture light crosstalk under different viewing angles, and greatly improve the display quality of naked-eye 3D.

[0123] In some embodiments, the three-dimensional display device further includes Figure 9 the image acquisition device 14 as shown. The image acquisition device can use a camera. The camera can be built into the edge of the display screen, or can also be a separately provided camera, which is not limited herein.

[0124] The image acquisition device 14 can acquire the image of the viewer and send it to the processor. The processor 13 is further configured to: determine the viewpoint corresponding to the position where the viewer is located according to the acquired image of the viewer; increase the weight of the original backlight data of the viewpoint corresponding to the position where the viewer is located according to the current display mode.

[0125] In some embodiments, the display mode can be divided into a first display mode, a second display mode, and a third display mode. In the first display mode, the weight of the backlight data of the viewpoint corresponding to the position where the viewer is located can be increased to 1 to 50, and the weights of the backlight data of other viewpoints are kept as 1. In the second display mode, the weight of the backlight data of the viewpoint corresponding to the position where the viewer is located can be increased to 50 to 100, and the weights of the backlight data of other viewpoints are kept as 1. In the third display mode, the weight of the backlight data of the viewpoint corresponding to the position where the viewer is located can be increased to more than 100, and the weights of the backlight data of other viewpoints are kept as 1.

[0126] In some embodiments, the processor 13 is further configured to: perform filtering processing on the backlight data after weighted averaging.

[0127] In some embodiments, the processor 13 is further configured to: perform convolution processing on the adjusted backlight data and a pre-determined light diffusion model to obtain backlight cumulative data; determine the pixel gain data correspondence according to the backlight cumulative data and the original backlight data; compensate the image data according to the determined pixel gain data correspondence; perform overflow protection processing on the compensated image data.

[0128] While the preferred embodiments of the present invention have been described, additional changes and modifications can be made by those skilled in the art once they learn of the basic creative concept. Therefore, the appended claims are intended to be construed to include the preferred embodiments as well as all changes and modifications that fall within the scope of the present invention.

[0129] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these modifications and variations.

Claims

1. A display method of a three-dimensional display device, characterized in that, The three-dimensional display device includes: a backlight module, a display panel located on the light-emitting side of the backlight module, a light control structure located on the side of the display panel facing away from the backlight module, and a processor connecting the backlight module and the display panel; wherein, the backlight module is used to provide backlight; the display panel is used to modulate the brightness of the emitted light; the light control structure is used to deflect incident light in multiple directions to form multiple viewpoints, realizing three-dimensional display; Wherein, the backlight module includes a plurality of light sources, the plurality of light sources are divided into a plurality of partitions, and the brightness of the plurality of partitions is independently controlled; the processor is configured to: Receive the image data of the image to be displayed; Respectively determine the original backlight data of the plurality of partitions corresponding to each viewpoint according to the image data of the image to be displayed; Take the weighted average of the original backlight data of the plurality of partitions corresponding to each viewpoint to obtain the adjusted backlight data of the plurality of partitions; Compensate the image data of the image to be displayed according to the adjusted backlight data to obtain adjusted image data; Send the adjusted backlight data to the backlight module, and send the adjusted image data to the display panel to drive the three-dimensional display device to perform image display.

2. The display method according to claim 1, wherein The adjusted backlight data satisfies: Among them, S represents the adjusted backlight data, S i represents the original backlight data corresponding to the i-th viewing point, r i represents the weight of the i-th viewing point, and N represents the number of viewing points; N is an integer greater than 1, and the value of i ranges from 1 to N.

3. The display method according to claim 2, characterized in that The weight values of the original backlight data of each viewpoint are all 1.

4. The display method according to claim 2, wherein The three-dimensional display device further includes an image acquisition device, and the image acquisition device is connected to the processor; The image acquisition device is used to acquire the image of the audience and send it to the processor; the processor is further configured to: Determine the viewpoint corresponding to the position where the audience is located according to the acquired image of the audience; Increase the weight of the original backlight data of the viewpoint corresponding to the position where the audience is located according to the current display mode; the current display mode is the display mode selected when the audience watches the three-dimensional display device.

5. The display method according to claim 4, wherein The display mode includes a first display mode, a second display mode, and a third display mode; The increasing the weight of the original backlight data of the viewpoint corresponding to the position where the audience is located according to the current display mode includes: When the current display mode is the first display mode, increase the weight of the original backlight data of the viewpoint corresponding to the position where the audience is located to be greater than 1 and less than or equal to 50, and keep the weights of the original backlight data of the remaining viewpoints all 1; When the current display mode is the second display mode, increase the weight of the original backlight data of the viewpoint corresponding to the position where the audience is located to be greater than 50 and less than or equal to 100, and keep the weights of the original backlight data of the remaining viewpoints all 1; When the current display mode is the third display mode, increase the weight of the original backlight data of the viewpoint corresponding to the position where the audience is located to be greater than 100, and keep the weights of the original backlight data of the remaining viewpoints all 1.

6. The display method according to any one of claims 1 to 5, characterized in that After taking the weighted average of the original backlight data of the plurality of partitions corresponding to each viewpoint and before compensating the image data of the image to be displayed according to the adjusted backlight data, it further includes: Perform filtering processing on the backlight data after weighted average; the filtering processing includes spatial filtering processing and temporal filtering processing.

7. The display method according to any one of claims 1 to 5, characterized in that, The compensating the image data of the image to be displayed according to the adjusted backlight data comprises: Convolution processing is performed on the adjusted backlight data and a predetermined light diffusion model to obtain backlight cumulative data; Determine a corresponding relationship between pixel gain data according to the backlight accumulated data and the original backlight data; The image data is compensated according to the determined corresponding relationship of the pixel gain data.

8. The display method according to claim 7, wherein After compensating the image data according to the determined corresponding relationship of the pixel gain data, the method further includes: Overflow protection is performed on the compensated image data.

9. The display method according to claim 7, wherein, The light diffusion model is determined in the following manner: Lighting up the partition located at the center of the backlight module; Collect the light energy distribution of each viewpoint in sequence; The light diffusion model is obtained by fitting the light energy distribution of each viewpoint.

10. A three-dimensional display device, characterized in that, include: A backlight module, used for providing backlight; The backlight module includes a plurality of light sources, and the plurality of light sources are divided into a plurality of partitions; A display panel, located on the light-emitting side of the backlight module; The display panel is used to modulate the brightness of the emitted light; A light control structure is located on a side of the display panel away from the backlight module; the light control structure is used to deflect incident light in multiple directions to form multiple viewpoints to achieve three-dimensional display; A processor is connected to the backlight module and the display panel respectively; the processor is used to receive image data of an image to be displayed; and determine the original backlight data of the multiple partitions corresponding to each viewpoint respectively according to the image data of the image to be displayed; Taking a weighted average of the original backlight data of the multiple partitions corresponding to each viewpoint to obtain the adjusted backlight data of the multiple partitions; The image data of the image to be displayed is compensated according to the adjusted backlight data to obtain the adjusted image data; the adjusted backlight data is sent to the backlight module, and the adjusted image data is sent to the display panel to drive the three-dimensional display device to display an image.

Images