Tracing-type stereo display apparatus and tracing-type stereo display method

1. A tracing-type stereo display apparatus, comprising:

a tracing member including an image acquiring unit and an image processing unit and configured for obtaining a first space position of a viewer;

an index member configured for obtaining a first index factor corresponding to the first space position and generating a first index table corresponding to the first index factor;

a sub-pixel array member configured for arraying sub-pixels according to the first index table; and

a stereo display member configured for displaying the arrayed sub-pixels,

wherein:

the tracing member is also configured to obtain a second space position of the viewer, different from the first space position of the viewer, due to a movement of the viewer;

the index member is also configured to obtain a second index factor corresponding to the second space position, based on the first index factor, and to generate a second index table corresponding to the second index factor;

the sub-pixel array member is also configured to automatically re-array the sub-pixels according to the second index table.

2. The tracing-type stereo display apparatus of claim 1 , wherein:

the image acquiring unit includes a camera and is configured for acquiring a tracing image of the viewer; and

the image processing unit is configured for obtaining a face image from the tracing image and determining a distance between the viewer and the image acquiring unit according to an area of the face image and an area of a standard face.

3. The tracing-type stereo display apparatus of claim 2 , wherein the image processing unit obtains a face template matching the face image, and determines an area of the face image according to the face template.

4. The tracing-type stereo display apparatus of claim 3 , wherein the image processing unit obtains a height and a width of the face image according to the face template, and further determines an area of the face image according to the height and the width of the face image.

5. The tracing-type stereo display apparatus of claim 4 , wherein the distance between the viewer and the image acquiring unit is governed by an equality: Z=f*√{square root over (S/s)}, wherein the capital letter “Z” represents a distance between a face of the viewer and an optics center of an image system of the image acquiring unit, the lowercase letter “s” represents the area of the face image, and the capital letter “S” represents the area of the standard face.

6. The tracing-type stereo display apparatus of claim 1 , wherein each of the first index factor and the second index factor comprises at least an array period of the sub-pixels and an offset.

7. The tracing-type stereo display apparatus of claim 1 , wherein the index table comprises a plurality of index values, and the index values are floating-point values or integral values.

8. The tracing-type stereo display apparatus of claim 1 , wherein a resolution of the index table is equal to that of the stereo display member.

9. The tracing-type stereo display apparatus of claim 6 , wherein the array period of the sub-pixels is governed by an equality: T C =(Z C *P)/(Zc−Sc), wherein “T C ” represents the array period of the sub-pixels, the capital letter “P” represents a distance between centers of two adjacent lenses of the stereo display member, “Sc” represents a distance between the lens and a display panel of the stereo display member, and “Zc” represents a coordinate value of a space position “C” on a Z-axis.

10. The tracing-type stereo display apparatus of claim 9 , wherein the offset is governed by an equality: offset c =P C −P A and an equality: P C =((P/2−X C )*S C )/(Z C −S C )+P/2, where offset represents the offset, “X C ” represents a coordinate value of the space position “C” on an X-axis, “P A ” represents the first space position, and “P C ” represents the second space position.

11. The tracing-type stereo display apparatus of claim 10 , wherein, when the viewer moves, a movement direction of the array period of the sub-pixels along the X-axis is opposite to that of the viewer, and a movement direction of an end of the offset along the X-axis is opposite to that of the viewer.

12. A tracing-type stereo display method, comprising the following steps:

obtaining a first space position of a viewer;

obtaining a first index factor corresponding to the first space position of the viewer;

generating an index table a first index table corresponding to the first index factor and arraying sub-pixels according to the first index table;

displaying the arrayed sub-pixels arrayed;

obtaining a second space position of the viewer, different from the first space position of the viewer, due to a movement of the viewer;

obtaining a second index factor corresponding to the second space position, based on the first index factor;

generating a second index table corresponding to the second index factor;

automatically re-arraying the sub-pixels according to the second index table.

13. The tracing-type stereo display method of claim 12 , wherein obtaining the first space position of the viewer comprises:

obtaining a tracing image of the viewer using a camera;

obtaining a face image from the tracing image; and

determining a distance between the viewer and an image acquiring unit which acquires the tracing image of the viewer according to an area of the face image and an area of a standard face.

14. The tracing-type stereo display method of claim 13 , wherein the distance between the viewer and the image acquiring unit is governed by an equality: Z=f*√{square root over (S/s)}, wherein the capital letter “Z” represents a distance between a face of the viewer and an optics center of an image system of the image acquiring unit, the lowercase letter “s” represents the area of the face image, and the capital letter “S” represents the area of the standard face.

15. The tracing-type stereo display method of claim 14 , wherein obtaining the face image from the tracing image comprises:

preliminarily locating the face image;

obtaining a face template matching the face image and determining a height and a width of the face image; and

determining the area of the face image according to the height and the width thereof.

16. The tracing-type stereo display method of claim 12 , wherein each of the first index factor and the second index factor comprises at least an array period of the sub-pixels and an offset.

17. The tracing-type stereo display method of claim 12 , wherein the index table comprises a plurality of index values, and the index values are floating-point values or integral values.

18. The tracing-type stereo display method of claim 12 , wherein a resolution of the index table is equal to that of a stereo display member which displays the sub-pixels arrayed according to the index table.

19. The tracing-type stereo display method of claim 16 , wherein the array period of the sub-pixels is governed by an equality: T C =(Z C *P)/(Zc−Sc), wherein “T C ” represents the array period of the sub-pixels, the capital letter “P” represents a distance between centers of two adjacent lenses of the stereo display member, “Sc” represents a distance between the lens and a display panel of the stereo display member, and “Zc” represents a coordinate value of a space position “C” on a Z-axis.

20. The tracing-type stereo display method of claim 19 , wherein the offset is governed by an equality: offset c =P C −P A and an equality: P C =((P/2−X C )*S C )/(Z C −S C )+P/2, where offset represents the offset, “X C ” represents a coordinate value of the space position “C” on an X-axis, “P A ” represents the first space position, and “P C ” represents the second space position.

21. The tracing-type stereo display method of claim 20 , wherein when the viewer moves, a movement direction of the array period of the sub-pixels along the X-axis is opposite to that of the viewer, and a movement direction of an end of the offset along the X-axis is opposite to that of the viewer.