Display device

Abstract

The present invention provides a display device, which includes a view generator, used to generate a plurality of input view numbers according to a plurality of reference parameters; a view curve modifier, coupled to the view generator, used to generate a plurality of output view numbers according to the plurality of input view numbers and at least one S-curve; a three-dimensional image data sampling module, coupled to the view curve modifier, used to adjust image data of a plurality of pixels according to the plurality of output view numbers; and a display module, coupled to the three-dimensional image data sampling module, used to display at least one image according to the plurality of pixels and the image data.

Description

Technical Field

[0001] The present invention relates to a display device, and in particular to a display device for improving the quality of three-dimensional (3D) images. Background Art

[0002] Display devices with three-dimensional (3D) image display technology have been developed to provide viewers with a 3D visual effect. For example, the display device displays an image of an object at an appropriate viewing angle to the right and left eyes of the viewer, so that the viewer can detect the 3D visual effect.

[0003] In the prior art, there are two-view 3D display technologies and multi-view 3D display technologies that provide images of a predetermined viewing angle of an object to a viewer. However, due to the crosstalk phenomenon between views of the object, the display device may provide a blurred image. Therefore, a display device that improves the quality of 3D images is needed. Summary of the invention

[0004] Therefore, the present invention provides a device and a method to solve the above-mentioned problem.

[0005] The present invention provides a display device, which includes a view generator, used to generate a plurality of input view numbers according to a plurality of reference parameters; a view curve modifier, coupled to the view generator, used to generate a plurality of output view numbers according to the plurality of input view numbers and at least one S curve; a three-dimensional (3D) image data sampling module, coupled to the view curve modifier, used to adjust image data of a plurality of pixels according to the plurality of output view numbers; and a display module, coupled to the 3D image data sampling module, used to display at least one image according to the plurality of pixels and the image data.

[0006] The present invention further provides a method for improving the quality of three-dimensional images, comprising generating a plurality of input view numbers according to a plurality of reference parameters; generating a plurality of output view numbers according to the plurality of input view numbers and at least one S curve; adjusting image data of a plurality of pixels according to the plurality of output view numbers; and displaying at least one image according to the plurality of pixels and the image data. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 FIG. 4 is a schematic diagram of a display device according to an embodiment of the present invention.

[0008] Figure 2 1 is a diagram showing the relationship between the original viewing position and the corrected viewing position according to an embodiment of the present invention.

[0009] Figure 3 1 is a diagram showing the relationship between the original viewing position and the corrected viewing position according to an embodiment of the present invention.

[0010] Figure 4 This is a viewing style of a display module and an optical modulator according to an embodiment of the present invention.

[0011] Figure 5 1 is a diagram showing the relationship between the original viewing position and the corrected viewing position according to an embodiment of the present invention.

[0012] Figure 6 1 is a diagram showing the relationship between the original viewing position and the corrected viewing position according to an embodiment of the present invention.

[0013] Figure 7 A schematic diagram of a viewing scene according to an embodiment of the present invention.

[0014] Figure 8 FIG. 4 is a schematic diagram of a display device according to an embodiment of the present invention.

[0015] Fig. 9 FIG. 4 is a schematic diagram of a plurality of correction factors according to an embodiment of the present invention.

[0016] Fig.10 The figure is a flow chart of the process of an embodiment of the present invention.

[0017] Description of reference numerals: 10, 80-display device; 100-eye tracking module; 102, 802-controller; 110-view generator; 120-view curve corrector; 130-three-dimensional image data sampling module; 140-display module; 150-optical modulator; 20, 30, 50, 60-relationship diagram; SP1, SP2, SP3, SP4-slope; 300-smoothing factor; 302, 304, 306-point area; 40-viewing style; A1, A 2. A3-lens focusing area; VP1, VP2, VP3-viewing pixels; XP-X marked pixels; VR1, VR2-viewing range; 70-viewing scene; 700-light source; 702-pixel plane; 704-viewer; 706-viewing position plane; EL-eye line; VC-central position; 812-black data insertion module; 90-correction factor; 1000-process; 1002, 1004, 1006, 1008, 1010, 1012-steps. DETAILED DESCRIPTION

[0018] Certain words are used throughout the specification and claims of the present invention to refer to specific components. It should be understood by those skilled in the art that electronic equipment manufacturers may refer to the same components by different names. It is not intended to distinguish between components that have the same function but different names. In the following specification and claims, the words "including" and "including" are open-ended words and should therefore be interpreted as "including but not limited to...".

[0019] Figure 11 is a schematic diagram of a display device 10 according to an embodiment of the present invention. The display device 10 includes an eye tracking module 100, a controller 102, a display module 140, and an optical modulator 150. In detail, the controller 102 allocates image data to a plurality of pixels of the display module 140, and the controller 102 includes the eye tracking module 100, a view generator 110, a view curve modifier 120, and a three-dimensional (3D) image data sampling module 130. The view generator 110 receives a plurality of reference parameters and generates a plurality of input view numbers according to the plurality of reference parameters. The view curve modifier 120 is coupled to the view generator 110 and receives a plurality of input view numbers. The view curve modifier 120 generates a plurality of output view numbers according to a plurality of input view numbers and at least one S curve. The 3D image data sampling module 130 is coupled to the view curve modifier 120 and receives the plurality of output view numbers. According to the plurality of output view numbers, the 3D image data sampling module 130 adjusts the image data of a plurality of pixels of the display module 140. The display module 140 is coupled to the 3D image data sampling module 130 and displays at least one image according to the plurality of pixels and the image data. That is, the at least one S curve describes the relationship between the plurality of input view numbers and the plurality of output view numbers to modify the view corresponding to the viewing position of the viewer. Therefore, image blurring can be reduced. The quality of the 3D image can be improved.

[0020] In some embodiments, the plurality of reference parameters may include a plurality of positions of a plurality of pixels of the display module 140. In some embodiments, the plurality of reference parameters may include a plurality of positions of eyes of the viewer. Further, the eye tracking module 100 is coupled to the view generator 110, and tracks a plurality of positions of the eyes of the viewer to estimate the positions of the right eye and the left eye of the viewer. In some embodiments, the plurality of reference parameters may include at least one optical parameter of the optical modulator 150. The optical modulator 150 is coupled to the display module 140, and modulates a plurality of lighting directions of a plurality of pixels of the display module 140. For example, the at least one optical parameter may include a pitch of the optical modulator 150, an angle of the optical modulator 150, or an alignment offset of the optical modulator 150. That is, according to the positions of the pixels, the at least one optical parameter of the optical modulator 150, and the plurality of positions of the eyes of the viewer, the view generator 110 may generate the input view number.

[0021] In some embodiments, at least one S-curve includes a plurality of line segments, and at least one slope of at least one of the plurality of line segments is less than or equal to 1. For example, at least one slope of at least one of the plurality of line segments may be in the range of 0.2 to 0.4, but is not limited thereto. In some embodiments, at least one S-curve includes a plurality of line segments, and at least two of the plurality of line segments have the same slope. In some embodiments, at least one S-curve includes a plurality of line segments, and the slope of at least one of the plurality of line segments is 0. In some embodiments, one or more pairs of the plurality of line segments may be connected directly or indirectly. In some embodiments, one or more pairs of the plurality of line segments having a vertical distance may be connected horizontally.

[0022] In some embodiments, at least one S-curve includes a plurality of planes, and at least two of the plurality of planes have the same normal vector. In some embodiments, at least one S-curve includes a plurality of planes, and at least two of the plurality of planes have different normal vectors. In some embodiments, one or more pairs of the plurality of planes may be connected directly or indirectly.

[0023] In some embodiments, the view curve modifier 120 generates a plurality of output view numbers according to a plurality of input view numbers, at least one S-curve, and a look-up table. The look-up table provides a relationship between a plurality of input view numbers and a plurality of output view numbers. That is, the view curve modifier 120 may include a look-up table. In some embodiments, the view curve modifier 120 generates a plurality of output view numbers according to a plurality of input view numbers, at least one S-curve, and a function. That is, the view curve modifier 120 may be a calculation module including a function. In some embodiments, the view curve modifier 120 generates a plurality of output view numbers according to a plurality of input view numbers, at least one S-curve, and a plurality of smoothing factors.

[0024] In some embodiments, the 3D image data sampling module 130 may further receive 3D data corresponding to a plurality of pixels (e.g., received from a 3D data storage device or a transmitter), wherein the 3D data may include at least one of, but not limited to, geometry data, color data (e.g., color information), lighting data (e.g., light source information), or material data (e.g., surface scattering property). In some embodiments, the 3D image data sampling module 130 defines an eye-to-eye line and converts a plurality of output view numbers to viewing positions on the eye-to-eye line. The 3D image data sampling module 130 calculates ray vectors from the viewing positions of the plurality of pixels. Next, according to the 3D data and a ray tracing 3D computer graphic (3DCG) manner, the 3D image data sampling module 130 generates gray level values ​​(e.g., in the range of 0 to 255) corresponding to a plurality of pixels by performing 3D data sampling along the ray vector. That is, according to the 3D data and a plurality of output view numbers, the 3D image data sampling module 130 can generate gray level values ​​to adjust the image data of a plurality of pixels.

[0025] In some embodiments, the display module 140 may be at least one of a liquid crystal display (LCD) module, an organic light emitting diode (OLED) display module, a quantum light emitting diode (OLED) display module, a mini light emitting diode (mini-LED) display module, and a micro light emitting diode (micro-LED) display module, but is not limited thereto. In some embodiments, the optical modulator 150 may be at least one of a lenticular lens film, a liquid crystal (LC) gradient index (GRIN) lens, a parallax barrier, a liquid crystal parallax barrier, or a micro lens array (MLA), but is not limited thereto.

[0026] It should be noted that in Figure 1 In FIG. 1 , the view curve modifier 120 is depicted as being coupled to the view generator 110 to illustrate the modification operation of the present invention. In some examples of the present invention, the view curve modifier 120 may be a part of the view generator 110, or may be an independent module for modifying the view number. When the view curve modifier 120 is a part of the view generator 110, the view generator 110 generates the same view number as the view curve modifier 120, that is, the view generator 110 may directly generate a plurality of output view numbers.

[0027] In some embodiments, all pixels of the display module 140 may be divided into a plurality of pattern blocks, and a pattern block of the plurality of pattern blocks includes a plurality of pixels. That is, different pattern blocks correspond to groups of different input view numbers. For example, a plurality of input view numbers may be independently assigned to sub-pixels in a pattern block to display ray vectors from a viewing position on the eye line to a target pixel of a plurality of pixels.

[0028] Figure 2 FIG20 is a relationship diagram between the original viewing position and the corrected viewing position according to an embodiment of the present invention. FIG20 can be used to implement Figure 1The relationship between the multiple input view numbers and the multiple output view numbers in . Figure 2 In the embodiment of the present invention, for the 8-bit case, the original viewing position and the corrected viewing position range from -128 to 127. However, the present invention is not limited to the 8-bit case. The original viewing position with a value of "0" represents the central position of the viewer's eye. The original viewing position with a value from "-128" to "-1" represents the viewing position of the viewer's right eye. The original viewing position with a value from "1" to "127" represents the viewing position of the viewer's left eye. The original viewing position is rearranged to a corrected viewing position (for example, rearranged by the view curve corrector 120), and the corrected viewing position is the same as the original viewing position or may be different from the original viewing position.

[0029] After being corrected, the corrected viewing position has fewer views than the original viewing position. Thereafter, the images of the fewer views are displayed, and the eyes of the viewer see the images of the fewer views simultaneously. Therefore, the effect of image blur can be reduced, and the quality of the three-dimensional image can be improved. In addition, the display device of the present invention can provide depth cues for the viewer's eye accommodation to avoid the vergence accommodation conflict (VAC) problem.

[0030] according to Figure 2 , the relationship between the original viewing position and the corrected viewing position has an S-curve. The S-curve includes a line segment, and the line segment has a slope SP1 for the right eye and a slope SP2 for the left eye. The slope SP1 and the slope SP2 are less than 1, and the slope SP1 and the slope SP2 may be the same.

[0031] Figure 3 FIG30 is a relationship diagram between the original viewing position and the corrected viewing position according to an embodiment of the present invention. The relationship diagram 30 can be used to implement Figure 1 The relationship between the plurality of input view numbers and the plurality of output view numbers in .

[0032] according to Figure 3 In the dot area 302, the dot area 304 and the dot area 306, the S-curve is modified by a plurality of smoothing factors 300. That is, the plurality of smoothing factors 300 are used to smooth the S-curve and generate a smooth S-curve. Therefore, when the viewer's head moves, the viewer does not see a discontinuous view or a double image. The three-dimensional visual effect of the image is improved.

[0033] In some embodiments, the plurality of smoothing factors 300 may be represented by an equation. That is, the S-curve may be filtered by the equation to generate a smoothed S-curve.

[0034] Figure 4 FIG. 4 is a viewing pattern 40 of a display module 140 and an optical modulator 150 according to an embodiment of the present invention. Figure 4 In the embodiment, the pixels of the display module 140 are used to display an image to a viewer. For example, through the lens focusing area A1 of the optical modulator 150, the viewing pixel VP1 displays an image. Through the lens focusing area A2 of the optical modulator 150, the viewing pixel VP2 displays an image. Through the lens focusing area A3 of the optical modulator 150, the viewing pixel VP3 displays an image. It should be noted that the X-marked pixel XP among the viewing pixels has an effect on image blur because the X-marked pixel XP provides an additional view that does not meet the viewer's requirements. The view curve modifier 120 can rearrange the X-marked pixel XP to the viewing pixel VP1, the viewing pixel VP2, or the viewing pixel VP3. Therefore, the rearranged X-marked pixel XP displays an image that meets the requirements, and the crosstalk phenomenon and / or image blur can be reduced.

[0035] Figure 5 FIG. 50 is a relationship diagram 50 between the original viewing position and the corrected viewing position according to an embodiment of the present invention. The relationship diagram 50 can be used to implement Figure 1 The relationship between the plurality of input view numbers and the plurality of output view numbers in the image processing unit 120 is calculated. The original viewing position is rearranged to the modified viewing position (e.g., rearranged by the view curve modifier 120). When the modified viewing position is in the viewing range VR1 of the viewer's right eye or the viewing range VR2 of the viewer's left eye, the modified viewing position is the same as the original viewing position. Otherwise, the modified viewing position is the same as the most recent modified viewing position in the viewing range VR1 or the viewing range VR2.

[0036] After being corrected, the corrected viewing positions in the viewing range VR1 and the viewing range VR2 have the same view as the original viewing position. When not in the viewing range VR1 and the viewing range VR2, the adjacent corrected viewing positions have the same view. Therefore, by reducing the extra view information, the crosstalk phenomenon and / or image blur can be reduced. The quality of the three-dimensional image can be improved.

[0037] according to Figure 5, the relationship between the original viewing position and the modified viewing position has a double S curve. The double S curve includes a line segment, and the line segment has a slope SP1 and a slope SP2. The slope SP1 and the slope SP2 are equal to 1. In some embodiments, the line segment has a slope, and the slope is equal to 0.

[0038] Figure 6 FIG60 is a relationship diagram between the original viewing position and the corrected viewing position according to an embodiment of the present invention. The relationship diagram 60 can be used to implement Figure 1 The relationship between the plurality of input view numbers and the plurality of output view numbers in the image processing unit 100 is as follows. The original viewing position is rearranged to a modified viewing position (eg, rearranged by the view curve modifier 120). The modified viewing position is the same as the original viewing position, or different from the original viewing position.

[0039] After being corrected, the corrected viewing position has fewer views than the original viewing position. After this, the images of the fewer views are displayed, and the eyes of the viewer see the images of the fewer views at the same time.

[0040] according to Figure 6 , the relationship between the original viewing position and the corrected viewing position has a multi-S curve. The multi-S curve includes a line segment, and the line segment has a slope SP1, a slope SP2, a slope SP3, and a slope SP4. The slope SP1, the slope SP2, the slope SP3, and the slope SP4 are less than 1, and are all equal. It should be noted that the present invention does not limit the line segment of the multi-S curve to have four slopes. The line segment of the multi-S curve may have fewer or more slopes, for example, more than three slopes.

[0041] In some embodiments, the display device 10 can provide images for multiple viewers according to the relationship diagram 60. For example, by providing images with different viewing angles to a first viewer, the display device 10 can generate a three-dimensional visual effect. If a second viewer is close to the first viewer and shares the same eye line as the first viewer, the second viewer can also detect the three-dimensional visual effect according to the image.

[0042] Figure 7 FIG. 1 is a schematic diagram of a viewing scene 70 according to an embodiment of the present invention. In this embodiment, the display module 140 may be a mini light emitting diode display module, a micro light emitting diode display module, or a display module with a micro lens array, but is not limited thereto. Figure 7, the display module 140 includes a light source 700 and a pixel plane 702 of the st axis, and is viewed by a viewer 704. According to the position of the eye of the viewer 704 detected by the eye tracking module 100, the 3D image data sampling module 130 can generate parameters of the central position VC of the eye of the viewer 704 on the eye line EL. The 3D image data sampling module 130 generates parameters of a viewing position plane 706 corresponding to the st axis of the pixel plane. That is, the view curve modifier 120 can be a two-dimensional (2D) view curve modifier. The view curve modifier 120 receives a plurality of input view numbers (s, t) and generates a plurality of output view numbers (s, t).

[0043] In some embodiments, the st axis may be equal to the xy axis. In some embodiments, the relationship between the plurality of input view numbers and the plurality of output view numbers has a 2D S curve, and two planes for the right eye and the left eye of the viewer are included in the st axis. In some embodiments, the view curve modifier 120 generates the plurality of output view numbers according to the plurality of input view numbers, the 2D S curve, and a 2D look-up table. In other words, the view curve modifier 120 may include a 2D look-up table. In some embodiments, the plane for the right eye and the plane for the left eye have the same normal vector.

[0044] Figure 8FIG. 8 is a schematic diagram of a display device 80 according to an embodiment of the present invention. The display device 80 includes an eye tracking module 100, a controller 802, a display module 140, and an optical modulator 150. The controller 802 allocates image data to a plurality of pixels of the display module 140, and includes a view generator 110, a view curve modifier 120, a 3D image data sampling module 130, and a black data insertion module 812. Specifically, the black data insertion module 812 is coupled to the view generator 110 and the 3D image data sampling module 130, and receives a plurality of input view numbers from the view generator 110. According to the plurality of input view numbers, the black data insertion module 812 generates a plurality of correction factors, and transmits the plurality of correction factors to the 3D image data sampling module 130. According to the plurality of output view numbers and the plurality of correction factors generated by the view curve modifier 120, the 3D image data sampling module 130 can adjust the image data of the plurality of pixels. That is, the display device 80 includes the black data insertion module 812 to correct the light intensity in the discontinuous view transition area. Therefore, the crosstalk phenomenon can be reduced and the three-dimensional visual effect of the image can be improved.

[0045] Fig. 9 FIG. 9 is a schematic diagram of a plurality of correction factors 90 according to an embodiment of the present invention. The plurality of correction factors 90 may be used to implement Figure 8 The plurality of correction factors generated by the black data insertion module 812 are as follows. Fig. 9 When the view is an outside view or an inside view (e.g., the view is in a discontinuous view transition region), the plurality of correction factors 90 are less than 1. When the view is not an outside view or an inside view (e.g., the view is in a region close to a right eye position or a left eye position), the plurality of correction factors 90 are 1. That is, in a viewing position corresponding to an outside view or an inside view, the viewer may see a darker image.

[0046] In some embodiments, the insertion area (e.g., the area of ​​the external view and the internal view) may be 10 percent of the total view area. In some embodiments, according to a plurality of correction factors 90, the 3D image data sampling module 130 corrects the grayscale value to adjust the image data of a plurality of pixels used for the display module 140. Therefore, the crosstalk phenomenon can be reduced and / or the problem of double images can be solved. The quality of the 3D image can be improved.

[0047] Fig.101 is a flow chart of a process 1000 according to an embodiment of the present invention. The process 1000 may be applied to the display device 10 and includes the following steps:

[0048] Step 1002: Start.

[0049] Step 1004: Generate a plurality of input view numbers according to a plurality of reference parameters.

[0050] Step 1006: Generate a plurality of output view numbers according to the plurality of input view numbers and at least one S-curve.

[0051] Step 1008: Adjust image data of a plurality of pixels according to the plurality of output view numbers.

[0052] Step 1010: Display at least one image according to the plurality of pixels and the image data.

[0053] Step 1012: End.

[0054] The detailed description and variations of the process 1000 can refer to the above description, which will not be repeated here. Those skilled in the art can combine, modify or change the above embodiments according to the spirit of the present invention, but are not limited thereto.

[0055] The term "in the range from a first value to a second value" means that the range includes the first value, the second value, and other values ​​therebetween.

[0056] In summary, the present invention provides a device and method with a three-dimensional display technology. The display device corrects the view corresponding to the viewing position. Therefore, the image blur caused by the crosstalk phenomenon can be reduced. In addition, the double image problem and / or the vergence-accommodation conflict problem can be solved. Therefore, the quality of the three-dimensional image can be improved.

[0057] In addition, in order to determine whether the display device of the present invention is infringed, the structure and three-dimensional imaging performance of the display device involved will be analyzed through a camera or a special optical measurement system. The angle and position of the camera can be changed to obtain multiple photos (such as continuous images). The multiple photos can be analyzed to obtain the edge position of the object moving in the viewing angle. Based on the multiple photos, it can be determined whether the display device infringes the display device of the present invention.

[0058] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A display device, characterized in that: include: a view generator for generating a plurality of input view numbers according to a plurality of reference parameters; a view curve modifier, coupled to the view generator, for generating a plurality of output view numbers according to the plurality of input view numbers and at least one S-curve; a 3D image data sampling module, coupled to the view curve modifier, for adjusting image data of a plurality of pixels according to the plurality of output view numbers; and a display module, coupled to the 3D image data sampling module, for displaying at least one image according to the plurality of pixels and the image data; Wherein, the view curve corrector corrects a plurality of original viewing positions to generate a plurality of corrected viewing positions, wherein the plurality of original viewing positions correspond to a plurality of first views, the plurality of corrected viewing positions correspond to a plurality of second views, and a number of the plurality of second views is less than a number of the plurality of first views.

2. The display device according to claim 1, wherein: The plurality of reference parameters include a plurality of positions of a viewer's eyes, and the display device further includes: An eye tracking module, coupled to the view generator, is configured to track the plurality of positions of the viewer's eyes.

3. The display device according to claim 1, wherein: The plurality of reference parameters include at least one optical parameter of at least one optical modulator, and the display device further includes: The optical modulator is coupled to the display module and is used to modulate a plurality of illumination directions of the plurality of pixels of the display module.

4. The display device according to claim 1, wherein: The at least one S-curve includes a plurality of line segments, and at least one slope of at least one line segment of the plurality of line segments is less than or equal to 1.

5. The display device according to claim 1, wherein: The at least one S-curve includes a plurality of line segments, and at least two line segments of the plurality of line segments have a same slope.

6. The display device according to claim 1, wherein: The at least one S-curve includes a plurality of line segments, and a slope of at least one line segment of the plurality of line segments is 0.

7. The display device according to claim 1, wherein: The at least one S-curve includes a plurality of planes, and at least two planes of the plurality of planes have a same normal vector.

8. The display device according to claim 1, wherein: The view curve modifier generates the plurality of output view numbers according to the plurality of input view numbers, the at least one S-curve and a lookup table.

9. The display device according to claim 1, wherein: The view curve modifier generates the plurality of output view numbers according to the plurality of input view numbers, the at least one S-curve and a plurality of smoothing factors.

10. The display device according to claim 1, wherein: The 3D image data sampling module adjusts the image data of the plurality of pixels according to the plurality of output view numbers and the plurality of correction factors, and the display device further comprises: A black data insertion module is coupled to the view generator and the 3D image data sampling module, and is used to generate the plurality of correction factors.

11. A method for improving the quality of a three-dimensional image, characterized in that: include: Generating a plurality of input view numbers according to a plurality of reference parameters; Generate a plurality of output view numbers according to the plurality of input view numbers and at least one S-curve; Adjusting image data of a plurality of pixels according to the plurality of output view numbers; as well as Display at least one image according to the plurality of pixels and the image data; The method further comprises: A plurality of original viewing positions are modified to generate a plurality of modified viewing positions, wherein the plurality of original viewing positions correspond to a plurality of first views, the plurality of modified viewing positions correspond to a plurality of second views, and a number of the plurality of second views is less than a number of the plurality of first views.

12. The method according to claim 11, characterized in that The plurality of reference parameters include a plurality of positions of a viewer's eyes, and the method further comprises: The plurality of positions of the viewer's eyes are tracked.

13. The method according to claim 11, characterized in that The plurality of reference parameters include at least one optical parameter of at least one optical modulator, and the method further comprises: The plurality of illumination directions of the plurality of pixels are modulated.

14. The method according to claim 11, characterized in that The at least one S-curve includes a plurality of line segments, and at least one slope of at least one line segment of the plurality of line segments is less than or equal to 1.

15. The method according to claim 11, characterized in that The at least one S-curve includes a plurality of line segments, and at least two line segments of the plurality of line segments have a same slope.

16. The method according to claim 11, characterized in that The at least one S-curve includes a plurality of line segments, and a slope of at least one line segment of the plurality of line segments is 0.

17. The method according to claim 11, characterized in that The at least one S-curve includes a plurality of planes, and at least two planes of the plurality of planes have a same normal vector.

18. The method according to claim 11, characterized in that The method further comprises: The plurality of output view numbers are generated according to the plurality of input view numbers, the at least one S-curve and a lookup table.

19. The method according to claim 11, characterized in that The method further comprises: The plurality of output view numbers are generated according to the plurality of input view numbers, the at least one S-curve and a plurality of smoothing factors.

20. The method of claim 11, wherein: The step of adjusting the image data of the plurality of pixels according to the plurality of output view numbers comprises: generating a plurality of correction factors; and The image data of the plurality of pixels are adjusted according to the plurality of output view numbers and the plurality of correction factors.

Images