LIGHT FIELD DISPLAY CONTROL METHODS AND APPARATUS, AND LIGHT FIELD DISPLAY DEVICES

• US 20170345402A1
• Filed: 09/10/2015
• Published: 11/30/2017
• Est. Priority Date: 12/29/2014
• Status: Active Application

• Current Assignee: Beijing Zhigu Tech Company, Ltd.
• Original Assignee: Beijing Zhigu Tech Company, Ltd.
• Inventors: ZHOU, LIANG, DU, LIN
• Granted Patent: US 10,283,093 B2
• Time in Patent Office: Days
• CPC Class Codes: G02B 3/0037 characterized by the distribution or form of lenses
• CPC Class Codes: G06T 7/11 Region-based segmentation
• CPC Class Codes: G09G 2320/0626 for control of overall brightness
• CPC Class Codes: G09G 2340/0407 Resolution change, inclusive of the use of different resolutions for different screen areas
• CPC Class Codes: G09G 2354/00 Aspects of interface with display user
• CPC Class Codes: G09G 3/003 to produce spatial visual effects
• CPC Class Codes: G09G 3/035 for flexible display surfaces
• CPC Class Codes: G09G 5/10 Intensity circuits
• CPC Class Codes: G09G 5/391 Resolution modifying circuits, e.g. variable screen formats
• CPC Class Codes: H04N 13/388 Volumetric displays, i.e. systems where the image is built up from picture elements distributed through a volume

Abstract

Embodiments of the present application disclose various light field display control methods and apparatus, and various light field display devices. One of the methods comprises: determining a first display region of a display of a light field display device according to target vision adjustment range information; adjusting display pixel density distribution of the display, to cause that display pixel density distribution of the first display region in the display after the adjustment is different from that of another display region of the display; performing sampling processing on a first light field image according to location information of display pixels of the display after the adjustment, the first light field image being corresponding to vision information in the target vision adjustment range and related to a source image; and displaying, by the light field display device after the adjustment, the first light field image undergone the sampling processing. The embodiments of the present application improve a vision correction precision of viewing an image by naked eyes for users having different vision information in a target vision adjustment range.

Claims

1. A light field display control method, comprising:

determining a first display region of a display of a light field display device according to target vision adjustment range information;

adjusting display pixel density distribution of the display, to cause that display pixel density distribution of the first display region in the display after the adjustment is different from that of another display region of the display;

performing sampling processing on a first light field image according to location information of display pixels of the display after the adjustment, the first light field image being corresponding to vision information in the target vision adjustment range and related to a source image; and

displaying, by the light field display device after the adjustment, the first light field image undergone the sampling processing.

2. The method of claim 1, further comprising:

determining the target vision adjustment range according to vision information of a user.

3. The method of claim 1, further comprising:

pre-processing the source image according to the vision information of the user to obtain the first light field image.

4. The method of claim 1, wherein, the determining a first display region of a display of a light field display device according to target vision adjustment range information comprises:

determining, according to the target vision adjustment range, a first display sub-region to be adjusted respectively in at least one display region of the display as the first display region.

5. The method of claim 4, wherein the first display sub-region to be adjusted in the display region is an annular region having a certain radial width in the display region.

6. The method of claim 4, wherein before and after the display region undergoes display density pixel adjustment, the display pixels of the display region keep unchanged but the display pixel density distribution is changed.

7. The method of claim 1, wherein, the determining a first display region of a display of a light field display device according to target vision adjustment range information comprises:

determining the first display region according to the target vision adjustment range and a first region of the source image, and the first region being a part of the source image.

8. The method of claim 7, wherein the determining the first display region according to the target vision adjustment range and the first region of the source image comprises:

determining multiple second light field images according to the target vision adjustment range, the second light field image being corresponding to vision adjustment information in the target vision adjustment range and related to the source image; and

determining light field sub-image information corresponding to the first region in the multiple second light field images; and

determining a display region in the display that affects displaying of the light field sub-image information as the first display region.

9. The method of claim 7, wherein the determining the first display region according to the target vision adjustment range and the first region of the source image comprises:

determining the first display region according to multiple pieces of vision information in the target vision adjustment range and relative location information of pixels in the first region relative to a reference point of the source image.

10. The method of claim 7, further comprising determining the first region of the source image.

11. The method of claim 10, wherein the determining the first region of the source image comprises:

acquiring region of interest information; and

determining the first region of the source image according to the region of interest information.

12. The method of claim 10, wherein the determining the first region of the source image comprises:

performing image analysis on the source image; and

determining the first region of the source image according to a result of the image analysis.

13. The method of claim 1, wherein the adjusting the display pixel density distribution of the display comprises:

determining target pixel density distribution information according to the first display region, wherein in the target pixel density distribution information, a target pixel density corresponding to the first display region is different from a target pixel density corresponding to another display region; and

adjusting the display pixel density distribution of the display according to the target pixel density distribution information.

14. The method of claim 13, wherein the adjusting the display pixel density distribution of the display according to the target pixel density distribution information comprises:

determining deformation control information of a controllable deformation material part according to the target pixel density distribution information; and

controlling, according to the deformation control information, the controllable deformation material part to deform, so as to adjust the display pixel density distribution of the display correspondingly through the deformation of the controllable deformation material part.

15. The method of claim 14, wherein the controllable deformation material part is at least made of one or more of the following controllable deformation materials:

a piezoelectric material, an electroactive polymer, a photoinduced deformation material, and a magnetostrictive material.

16. The method of claim 1, further comprising:

performing a balanced control on display brightness of different display regions of the display in a process that the light field display device after the adjustment displays the light field image undergone the sampling processing.

17. A light field display control apparatus, comprising:

a display region determining module, configured to determine a first display region of a display of a light field display device according to target vision adjustment range information;

a display pixel density distribution adjusting module, configured to adjust display pixel density distribution of the display, to cause that display pixel density distribution of the first display region in the display after the adjustment is different from that of another display region of the display;

an image sampling processing module, configured to perform sampling processing on a first light field image according to location information of display pixels of the display after the adjustment, the first light field image being corresponding to vision information in the target vision adjustment range and related to a source image; and

a light field display module, configured to display, by the light field display device after the adjustment, the first light field image undergone the sampling processing.

18. The apparatus of claim 17, further comprising:

a vision adjustment range information determining module, configured to determine the target vision adjustment range according to vision information of a user.

19. The apparatus of claim 17, further comprising:

a source image pre-processing module, configured to pre-process the source image according to the vision information of the user to obtain the first light field image.

20. The apparatus of claim 17, wherein the display region determining module comprises:

a first display region determining sub-module, configured to determine, according to the target vision adjustment range, a first display sub-region to be adjusted respectively in at least one display region of the display as the first display region.

21. The apparatus of claim 20, wherein the first display sub-region to be adjusted in the display region is an annular region having a certain radial width in the display region.

22. The apparatus of claim 20, wherein before and after the display region undergoes display density pixel adjustment, the display pixels of the display region keep unchanged but the display pixel density distribution is changed.

23. The apparatus of claim 17, wherein the display region determining module comprises:

a second display region determining sub-module, configured to determine the first display region according to the target vision adjustment range and a first region of the source image, and the first region being a part of the source image.

24. The apparatus of claim 23, wherein the second display region determining sub-module comprises:

a light field image determining unit, configured to determine multiple second light field images according to the target vision adjustment range, the second light field image being corresponding to vision adjustment information in the target vision adjustment range and related to the source image;

a light field sub-image determining unit, configured to determine light field sub-image information corresponding to the first region in the multiple second light field images; and

a first display region determining unit, configured to determine a display region in the display that affects displaying of the light field sub-image information as the first display region.

25. The apparatus of claim 23, wherein the second display region determining sub-module comprises:

a second display region determining unit, configured to determine the first display region according to multiple pieces of vision information in the target vision adjustment range and relative location information of pixels in the first region relative to a reference point of the source image.

26. The apparatus of claim 23, further comprising:

a first region determining module, configured to determine a first region of the source image.

27. The apparatus of claim 26, wherein the first region determining module comprises:

a region of interest information determining sub-module, configured to acquire region of interest information; and

a region of interest determining sub-module, configured to determine the first region of the source image according to the region of interest information.

28. The apparatus of claim 26, wherein the first region determining module comprises:

an image analyzing sub-module, configured to perform image analysis on the source image; and

an image analysis result determining sub-module, configured to determine the first region of the source image according to an analysis result of the source image.

29. The apparatus of claim 17, wherein the display pixel density distribution adjusting module comprises:

a target pixel density distribution information determining sub-module, configured to determine target pixel density distribution information according to the first display region, wherein in the target pixel density distribution information, a target pixel density corresponding to the first display region is different from a target pixel density corresponding to another display region; and

a display pixel density distribution adjusting sub-module, configured to adjust the display pixel density distribution of the display according to the target pixel density distribution information.

30. The apparatus of claim 29, wherein the display pixel density distribution adjusting sub-module comprises:

a deformation control information determining unit, configured to determine deformation control information of a controllable deformation material part according to the target pixel density distribution information; and

a deformation controlling unit, configured to control, according to the deformation control information, the controllable deformation material part to deform, so as to adjust the display pixel density distribution of the display correspondingly through the deformation of the controllable deformation material part.

31. The apparatus of claim 30, wherein the controllable deformation material part is at least made of one or more of the following controllable deformation materials:

a piezoelectric material, an electroactive polymer, a photoinduced deformation material, and a magnetostrictive material.

32. The apparatus of claim 17, further comprising:

a brightness balanced control module, configured to perform a balanced control on display brightness of different display regions of the display in a process that the light field display device after the adjustment displays the light field image undergone the sampling processing.

33. A light field display device, comprising:

a display;

a lenslet array; and

the light field display control apparatus of claim 17, the light field display control apparatus being in communication connection with the display.

34. The light field display device of claim 33, wherein:

the display comprises multiple display regions, one of the display regions comprising multiple display pixels; and

the lenslet array is disposed to be close to the display, comprises multiple lenslets, and one of the lenslets is corresponding to at least one of the display regions.

35. The light field display device of claim 33, wherein the display comprises:

multiple display pixels distributed in an array; and

a controllable deformation material part, connected to the multiple display pixels respectively, wherein the controllable deformation material part deforms under the action of an external field, density distribution of the multiple display pixels is adjusted correspondingly through the deformation, and the external field is controlled by the light field display control apparatus.

36. A computer readable storage apparatus, comprising at least one executable instruction, which, in response to execution, causes a processor to perform a light field display control method, comprising:

determining a first display region of a display of a light field display device according to target vision adjustment range information;

adjusting display pixel density distribution of the display, to cause that display pixel density distribution of the first display region in the display after the adjustment is different from that of another display region of the display;

performing sampling processing on a first light field image according to location information of display pixels of the display after the adjustment, the first light field image being corresponding to vision information in the target vision adjustment range and related to a source image; and

displaying, by the light field display device after the adjustment, the first light field image undergone the sampling processing.

37. A light field display control apparatus, characterized by comprising a processor and a memory, the memory storing computer executable instructions, the processor being connected to the memory through a communication bus, and when the apparatus for controlling task migration operates, the processor executing the computer executable instructions stored in the memory, so that the apparatus for controlling task migration executes operations, comprising:

determining a first display region of a display of a light field display device according to target vision adjustment range information;

adjusting display pixel density distribution of the display, to cause that display pixel density distribution of the first display region in the display after the adjustment is different from that of another display region of the display;

performing sampling processing on a first light field image according to location information of display pixels of the display after the adjustment, the first light field image being corresponding to vision information in the target vision adjustment range and related to a source image; and

displaying, by the light field display device after the adjustment, the first light field image undergone the sampling processing.