TWI556623B - Controlling method of three-dimensional image - Google Patents

Description

Three-dimensional image control method

The invention relates to a three-dimensional image control method, in particular to a naked-view three-dimensional image control method.

In recent years, with the improvement of the quality of life, display technology has continued to improve. From the early black-and-white TV, color TV, to the current high-definition, thin and light, flat-screen TV, all of them mean that people pursue more realistic and more natural image quality. In order to meet the demand for more realistic images, display technology has evolved from two-dimensional to three-dimensional to provide a visual experience of three-dimensional space. Today's stereoscopic display technology is mostly achieved by means of binocular parallax. Therefore, in order for a person to receive a stereoscopic image, the left and right eyes must receive slightly different images. The display technology of three-dimensional images can be roughly divided into glasses type and naked-eye type. Among them, the naked-eye type three-dimensional image display technology is convenient for the user because it does not need to wear special glasses.

However, while the naked-view 3D image display technology is progressing, there is still much room for improvement in display quality. Therefore, how to improve the existing 3D image display technology to improve the image quality of 3D images is one of the problems that developers should solve.

The present invention provides a three-dimensional image control method for improving the display quality of a three-dimensional image.

The three-dimensional image control method disclosed in the present invention is applicable to a display device. The display device has a plurality of sub-pixels arranged in a plurality of rows and a plurality of columns. Moreover, the display device defines a plurality of viewing angles, each of the viewing angles corresponding to at least a portion of the sub-pixels to provide a viewing angle image. this In addition, the display device defines a plurality of visible regions that are parallel to each other, each of the visible regions corresponding to one of the viewing angles, and the visible region has an angle with the row direction of the sub-pixels. The three-dimensional image control method includes the following steps. First, provide the original matrix. Wherein each element of the original matrix corresponds to the brightness of one of the sub-pixels in one of the view images. Then, the original matrix and the correction matrix are operated to generate an output matrix. The display device determines the brightness of one of the sub-pixels of one of the view images based on the elements in the output matrix.

According to the three-dimensional image control method disclosed in the present invention, the brightness of the sub-pixel can be reduced to compensate for the influence of the light leakage of the adjacent sub-pixel. Therefore, the display device can use the output matrix to determine each view image, and further provide display of the optimized three-dimensional image.

The above description of the present invention and the following description of the embodiments are intended to illustrate and explain the principles of the invention, and to provide a further explanation of the scope of the invention.

1, 3, 4, 5, 6‧‧‧ display devices

10, 30, 40, 50, 60‧ ‧ sub-pixels

12, 32, 42, 52, 62‧‧‧ visible areas

14‧‧‧Spectral components

θ, ψ ₁ , ψ ₂ , ψ ₃ , ψ ₄ ‧ ‧ angle

100, 300, 302, 304, 400, 402, 404‧‧ ‧ sub-pixels

500, 502, 504, 506, 508‧ ‧ sub-pixels

601, 602, 603, 604, 605‧‧ ‧ sub-pixels

Fig. 1 is a schematic view showing the structure of a display device to which an embodiment of the present invention is applied.

FIG. 2 is a flowchart of a three-dimensional image control method according to an embodiment of the present invention.

FIG. 3 is a schematic structural view of another display device for explaining a three-dimensional image control method according to another embodiment of the present invention.

FIG. 4 is a schematic structural view of still another display device for explaining a three-dimensional image control method according to still another embodiment of the present invention.

FIG. 5 is a schematic structural view of still another display device for explaining a three-dimensional image control method according to still another embodiment of the present invention.

FIG. 6 is a schematic structural view of still another display device for explaining a three-dimensional image control method according to still another embodiment of the present invention.

Referring to Fig. 1, there is shown a schematic structural view of a display device to which an embodiment of the present invention is applied. The display device 1 has a plurality of sub-pixels 10, which are in a plurality of rows and Arrange the columns in a way. And the display device 1 defines a plurality of viewing angles, each of which corresponds to at least a portion of the sub-pixels 10 to provide a viewing angle image. In practice, the plurality of splitting elements 14 can be used to generate different viewing angles, and the splitting element 14 can be a cylindrical convex lens, but not limited thereto. Further, the display device 1 defines a plurality of visible regions 12 that are parallel to each other, and each of the visible regions 12 corresponds to one of the viewing angles. By arranging the spectroscopic elements 14 in an inclined manner, these visible regions 12 can be formed at an angle θ with the row direction in which the sub-pixels 10 are arranged.

In practice, the correspondence between the sub-pixel 10 and the viewing angle depends on the number of viewing angles and the angle θ, and the adjacent sub-pixels 10 usually belong to different viewing angles. Therefore, taking the sub-pixel 100 in the sub-pixel 10 as an example, it is assumed that it is a sub-pixel 10 whose corresponding viewing angle is to be displayed in the visible area. Due to the presence of the included angle θ, in addition to one of the sub-pixels 10 itself, the sub-pixels 10 belonging to other viewing angles may also fall into the visible area. Taking N views as an example, the following equations can be used.

View 1 _perceived = View 1 _display + C ₁ ×( ViewN _display + View 2 _display )+ C ₂ ×( View ( N -1) _display + View 3 _display )+... (1)

View 2 _perceived = View 2 _display + C ₁ ×( View 1 _display + View 3 _display )+ C ₂ ×( ViewN _display + View 4 _display )+... (2)

⋮

ViewN _perceived = ViewN _display + C ₁ ×( View ( N -1) _display + View 1 _display )+ C ₂ ×( View ( N -2) _display + View 2 _display )+... (3) Viewi _perceived the brightness of the sub-pixel 10 of the i-th view seen by the user, Viewi _display is the brightness of the sub-pixel 10 of the i-th view displayed by the display device, and Cj represents the sub-picture of the i-th view. The degree of influence of the brightness of the sub-pixel 10 of the other viewing angles other than the pixel 10 on the brightness of the sub-pixel 10 of the i-th viewing angle. In practice, Cj can be regarded as a weight value, which is associated with the area occupied by the corresponding sub-pixel 10 in the original matrix in the corresponding visible area. Further expressing the above equation into a matrix, the following equation can be obtained.

CV _d = V _p ............................................. ..........................(4)

Where C is the correction matrix, V _d is the output matrix, and V _p is the original matrix.

According to the above matrix, the elements of the original matrix correspond to the brightness of at least a portion of the sub-pixels 10 of the same row. Furthermore, the diagonal element of the correction matrix is 1, and each column except the first column is a result of a cyclic shift to the right of its previous column. In practice, the inverse matrix of the correction matrix can be multiplied by the original matrix to produce an output matrix. Furthermore, each element of the original matrix can be multiplied by a corresponding coefficient and added to generate one of a plurality of elements of the output matrix. The above coefficients are the elements of the inverse matrix of the correction matrix, so the above coefficients are associated with the weight values represented by Cj .

Please refer to both FIG. 1 and FIG. 2, wherein FIG. 2 is the three-dimensional embodiment of the present embodiment. Flow chart of the image control method. The three-dimensional image control method of the present embodiment is applied to the display device 1 as shown in Fig. 1, and includes the following steps. First, in step S20, an original matrix is provided. Wherein each element of the original matrix corresponds to the brightness of one of the sub-pixels 10 in one of the view images. Then, in step S22, the original matrix and the correction matrix are operated to generate an output matrix. The display device 1 determines the brightness of one of the sub-pixels 10 of one of the view images based on the elements in the output matrix. By the above operation, the brightness of the sub-pixel 10 can be reduced to compensate for the influence of light leakage caused by the neighboring sub-pixels 10. Therefore, the display device 1 can determine the respective view images by using the output matrix, and further provide the display of the optimized three-dimensional images.

Please refer to FIG. 3, which is a structural diagram of another display device for explaining a three-dimensional image control method according to another embodiment of the present invention. As shown in FIG. 3, the display device 3 includes a plurality of sub-pixels 30. The sub-pixels 30 of the first row and the fourth row are red sub-pixels, and the sub-pixels 30 of the second row and the fifth row are sub-pixels belonging to the green sub-pixel, the third row and the sixth row. 30 belongs to the blue sub-pixel. The visible area 32 forms an angle ψ ₁ with the row direction of the sub-pixels 30, wherein ψ ₁ is tan ^-1 (1/6), which is approximately equal to 9.46 degrees. The number indicated on each sub-pixel 30 represents the angle of view corresponding to the sub-pixel 30. For example, the sub-pixel 30 indicating "1" corresponds to the first angle of view, and the sub-pixel 30 indicating "5" corresponds to the first pixel 30. 5 views, this embodiment takes a total of five perspectives as an example, but is not limited thereto. Therefore, the sub-pixel 30 indicating the same number can constitute a corresponding view image. Taking the second viewing angle as an example, if the sub-pixel 300 is the sub-pixel 30 to be displayed, it is most affected by the light leakage of the sub-pixel 302 and the sub-pixel 304. For the same reason, other perspectives are also most affected by the upper and lower sub-pixels 30.

Therefore, the correction matrix, the output matrix, and the original matrix can be respectively described by the following equations.

The relative positional relationship of the sub-pixels 30 of each view is as indicated by the subscripts of the original matrix elements and the output matrix elements. For example, the sub-pixel 30 of the third viewing angle is (x, y-2), and the sub-pixel 30 of the second viewing angle is located below the sub-pixel 30 of the third viewing angle, so the coordinate is (x, y- 3). Further, the sub-pixel 30 of the first viewing angle is located below the sub-pixel 30 of the second viewing angle, so its coordinate is (x, y-4), and the sub-pixel 30 coordinates of the fourth viewing angle and the fifth viewing angle can be deduced by analogy. In practice, C ₁ may be a value less than 0.3, but not limited thereto. In this embodiment, ψ _{1 is} approximately equal to 9.46 degrees. In practice, when ψ _{1 is} between 8 degrees and 11 degrees, the mutual influence of sub-pixels 30 of each viewing angle is similar to that of the present embodiment. Therefore, the present embodiment of the embodiment of the original matrix, the correction matrix and an output matrix, ψ applied to the display device ₁ is interposed between 8 degrees to 11 degrees, generally the knowledge of those skilled in the art can be suitably adjusted C _1, in order to achieve the best the goal of.

Please refer to FIG. 4, which is a structural diagram of another display device for explaining a three-dimensional image control method according to still another embodiment of the present invention. As shown in FIG. 4, the display device 4 includes a plurality of sub-pixels 40. The sub-pixels 40 of the first row and the fourth row are red sub-pixels, and the sub-pixels 40 of the second row and the fifth row are sub-pixels belonging to the green sub-pixel, the third row and the sixth row. 40 belongs to the blue sub-pixel. The visible area 42 forms an angle ψ ₂ with the row direction of the sub-pixels 40, wherein ψ ₂ is tan ^-1 (1/3), which is approximately equal to 18.43 degrees. The number indicated on each sub-pixel 40 represents the viewing angle corresponding to the sub-pixel 40. This embodiment also takes a total of five viewing angles as an example, but is not limited thereto. Taking the second viewing angle as an example, if the sub-pixel 400 is the sub-pixel 40 to be displayed, it is most affected by the light leakage of the sub-pixel 402 and the sub-pixel 404. For the same reason, other perspectives are also most affected by the upper and lower sub-pixels 40. Furthermore, the configuration of the sub-pixel 40 in this embodiment is the same as that of the sub-pixel 30 in the above embodiment. Accordingly, the present embodiment can also be applied as described in the original matrix ψ ₁ is approximately equal to 9.46 when the degree of correction matrices and output matrices. Further, in the present embodiment, the sub-pixels 40 are affected by the upper and lower sub-pixels 40, which are lower than the previous embodiment. Therefore, the value of C ₁ selected in practice is smaller than that of the foregoing embodiment. In this embodiment, although ψ _{2 is} approximately equal to 18.43 degrees, in practice, when ψ _{2 is} between 16 degrees and 20 degrees, the mutual influence of the sub-pixels 40 of the respective viewing angles is similar to that of the present embodiment. Therefore, the present embodiment of the embodiment of the original matrix, the correction matrix and an output matrix, is applicable to the display device ₂ ψ between 16 degrees to 20 degrees, generally the knowledge of those skilled in the art can be suitably adjusted C _1, in order to achieve the best the goal of.

Please refer to FIG. 5, which is a structural diagram of another display device for explaining a three-dimensional image control method according to still another embodiment of the present invention. As shown in FIG. 5, the display device 5 includes a plurality of sub-pixels 50. The sub-pixels 50 of the first row and the fourth row are red sub-pixels, and the sub-pixels 50 of the second row and the fifth row are sub-pixels belonging to the green sub-pixel, the third row and the sixth row. 50 is a blue sub-pixel. The visible area 52 forms an angle ψ ₃ with the row direction of the sub-pixels 50, wherein ψ ₃ is tan ^-1 (1/9), which is approximately equal to 6.34 degrees. The number indicated on each sub-pixel 50 represents the viewing angle corresponding to the sub-pixel 50. This embodiment also takes a total of five viewing angles as an example, but is not limited thereto. Taking the third viewing angle as an example, if the sub-pixel 500 is the sub-pixel 50 to be displayed, it is most affected by the light leakage of the sub-pixel 502 and the sub-pixel 504. Secondly, the sub-pixel 500 is also affected by the light leakage of the sub-pixel 506 and the sub-pixel 508, but the influence is smaller than the sub-pixel 502 and the sub-pixel 504. For the same reason, the other perspectives are also most affected by the two sub-pixels 50 above and below.

Therefore, the correction matrix, the output matrix, and the original matrix can be respectively described by the following equations.

The relative positional relationship of the sub-pixels 50 of each view is as shown by the subscripts of the original matrix elements and the output matrix elements. Furthermore, since the sub-pixel 50 is most affected by the upper and lower sub-pixels 50, C _{1 is} larger than C ₂ in practice. In this embodiment, ψ _{3 is} approximately equal to 6.34 degrees. In practice, when ψ _{3 is} between 5 degrees and 8 degrees, the mutual influence of sub-pixels 50 of each viewing angle is similar to that of the present embodiment. Therefore, this embodiment of the embodiment of the original matrix, the correction matrix and an output matrix, applied to ψ ₃ interposed between the display device is 5 to 8 degrees, generally the knowledge of those skilled in the art can be suitably adjusted C ₁ and C _2, in order to achieve The purpose of optimization.

Please refer to FIG. 6 , which is a structural diagram of another display device for explaining a three-dimensional image control method according to still another embodiment of the present invention. As shown in FIG. 6, the display device 6 includes a plurality of sub-pixels 60. The sub-pixel 60 of the first row, the fourth row, the seventh row, and the tenth row belongs to the red sub-pixel, and the sub-pixel 60 of the second row, the fifth row, and the eighth row belongs to the green sub-pixel. The sub-pixel 60 of the third row, the sixth row, and the ninth row belongs to the blue sub-pixel. The visible area 62 forms an angle ψ ₄ with the row direction of the sub-pixels 60, and ψ ₄ is tan ^-1 (2/3), which is approximately equal to 33.69 degrees. The number indicated on each sub-pixel 60 represents the viewing angle corresponding to the sub-pixel 60. This embodiment also takes a total of five viewing angles as an example, but is not limited thereto. Taking the second viewing angle as an example, it is assumed that the sub-pixel 602 is the sub-pixel 60 to be displayed. In practice, the sub-pixel 60 adjacent to the same color can be selected as the basis for the correction, but not limited thereto. For example, sub-pixels 601 and sub-pixels 603 adjacent to the same color can be selected as the basis for correction. Taking the third viewing angle as an example, if the sub-pixel 603 is the sub-pixel 60 to be displayed, the sub-pixel 602 and the sub-pixel 604 adjacent to the same color can be selected as the basis for the correction, and the remaining viewing angles can be deduced.

Therefore, the correction matrix, the output matrix, and the original matrix can be respectively described by the following equations.

The relative positional relationship of the sub-pixels 60 of each view is as indicated by the subscripts of the original matrix elements and the output matrix elements. In the embodiment, although ψ _{4 is} approximately equal to 33.69 degrees, in practice, when ψ _{4 is} between 32 degrees and 35 degrees, the mutual influence of the sub-pixels 60 of the respective viewing angles is similar to that of the embodiment. Therefore, the present embodiment of the embodiment of the original matrix, the correction matrix and an output matrix, ψ applied to the display device 32 is interposed between ₄ to 35 degrees, the ordinary knowledge of those skilled in the art can be suitably adjusted C _1, in order to achieve the best the goal of.

In summary, according to the configuration of the sub-pixel of the three-dimensional image display device and its correspondence with the viewing angle, an appropriate original matrix and a correction matrix can be defined to generate an output matrix. Thereby, the brightness of the sub-pixel can be reduced to compensate for the influence of the light leakage of the adjacent sub-pixels, the problem of image blurring is improved, and the image quality is improved. Therefore, the display device can use the output matrix to determine each view image to provide an optimized three-dimensional image display.

Although the embodiments of the present invention are disclosed above, it is not intended to limit the present invention, and those skilled in the art, regardless of the spirit and scope of the present invention, the shapes, configurations, and features described in the scope of the present application. And the number of modifications may be made, and the scope of patent protection of the present invention shall be determined by the scope of the patent application attached to the specification.

Claims (10)

A three-dimensional image control method is applicable to a display device. The display device has a plurality of sub-pixels arranged in a plurality of rows and a plurality of columns. The display device defines a plurality of viewing angles, each of which The viewing angle corresponds to at least a portion of the sub-pixels to provide a view image, and the display device defines a plurality of visible regions that are parallel to each other, each of the visible regions corresponding to one of the viewing angles, the visible regions and the plurality of viewing regions The line direction of the pixel has an angle, and the three-dimensional image control method includes: providing an original matrix, each element of the original matrix corresponding to brightness of one of the sub-pixels of one of the view images; The original matrix is operated with a correction matrix to generate an output matrix, and the display device determines the brightness of one of the sub-pixels of one of the view images according to an element in the output matrix; wherein the correction Each element of the matrix is a weight value associated with one of the elements of the original matrix in one of the visible regions In the step of generating the output matrix, including multiplying the inverse matrix of the correction matrix by the original matrix to generate the output matrix, the elements of the original matrix corresponding to at least part of the sub-pixels of the same row Brightness, a first element of the first column of the correction matrix is 1, a second element of the first column is a first weight value, and a last element of the first column is the first weight value, the first The remaining elements of a column are 0, and the first weight value is less than 1 and greater than 0. Each of the correction matrix except the first column is a result of a cyclic shift to the right of the previous column. . The three-dimensional image control method of claim 1, wherein the original matrix is associated with a relative position between the sub-pixels in each of the visible regions. The three-dimensional image control method of claim 1, wherein each of the sub-pixels corresponds to a color, and the elements of the original matrix correspond to the same color. The three-dimensional image control method of claim 1, wherein in the step of generating the output matrix, The method includes: multiplying each of the elements of the original matrix by a corresponding one of the coefficients and adding one of the plurality of elements of the output matrix, wherein the coefficients are associated with the weight values. The three-dimensional image control method of claim 1, wherein the included angle is between 8 degrees and 11 degrees or between 16 degrees and 20 degrees. A three-dimensional image control method is applicable to a display device. The display device has a plurality of sub-pixels arranged in a plurality of rows and a plurality of columns. The display device defines a plurality of viewing angles, each of which The viewing angle corresponds to at least a portion of the sub-pixels to provide a view image, and the display device defines a plurality of visible regions that are parallel to each other, each of the visible regions corresponding to one of the viewing angles, the visible regions and the plurality of viewing regions The line direction of the pixel has an angle, and the three-dimensional image control method includes: providing an original matrix, each element of the original matrix corresponding to brightness of one of the sub-pixels of one of the view images; The original matrix is operated with a correction matrix to generate an output matrix, and the display device determines the brightness of one of the sub-pixels of one of the view images according to an element in the output matrix; wherein Each element of the correction matrix is a weight value associated with one of the elements of the original matrix in one of the visible regions And generating, in the step of generating the output matrix, multiplying an inverse matrix of the correction matrix by the original matrix to generate the output matrix, the elements of the original matrix corresponding to at least part of the sub-pixels of the same row a first element of the first column of the correction matrix is 1, a second element of the first column is a first weight value, and a third element of the first column is a second weight value. a last element of the first column is the first weight value, the previous element of the last element of the first column is the second weight value, and the remaining elements of the first column are 0, the first The weight value and the second weight value are less than 1 and greater than 0, and the first weight value is greater than the second weight value, and the correction matrix is looped to the right of the previous column except the first column. A result of the shift. The three-dimensional image control method of claim 6, wherein the included angle is between 5 degrees and 8 degrees. The three-dimensional image control method of claim 6, wherein the original matrix is associated with a relative position between the sub-pixels in each of the visible regions. The three-dimensional image control method of claim 6, wherein each of the sub-pixels corresponds to a color, and the elements of the original matrix correspond to the same color. The method of claim 3, wherein the step of generating the output matrix comprises: multiplying each of the elements of the original matrix by a corresponding coefficient and adding to generate a plurality of the output matrix One of the elements, wherein the coefficients are associated with the weight values.