Method and system for 3D comb filtering of a video signal
View Patent ↗Methods and systems for 3D comb filtering of a video signal are provided. Aspects of the method may include generating a plurality of interpolated pixels for corresponding video samples for a first video frame, determining at least one direction of least bandwidth among the video samples and the interpolated pixels, and blending combing according to the determined direction of least bandwidth. A plurality of interpolated pixels for corresponding video samples may be generated in a first pixel line of the first video frame. The plurality of interpolated pixels in the first pixel line may be generated, so that each of the plurality of interpolated pixels in the first pixel line is one quarter cycle phase-shifted from a corresponding adjacent pixel in the first pixel line.
1. A method for separating luma and chroma components in a composite video signal, the method comprising:
generating a plurality of interpolated pixels for corresponding video samples for a first video frame;
determining at least one direction of least bandwidth among the video samples and the interpolated pixels; and
blending combing according to the determined direction of least bandwidth.
2. The method of claim 1 , comprising generating a plurality of interpolated pixels for corresponding video samples in a first pixel line of the first video frame.
3. The method of claim 2 , comprising generating the plurality of interpolated pixels in the first pixel line, so that each of the plurality of interpolated pixels in the first pixel line is one quarter cycle phase-shifted from a corresponding adjacent pixel in the first pixel line.
4. The method of claim 3 , comprising combing horizontally, if the determined direction of least bandwidth is among in-phase pixels in the first pixel line.
5. The method of claim 2 , comprising generating a plurality of interpolated pixels for corresponding video samples in a second pixel line of the first video frame, so that each of the plurality of interpolated pixels in the second line is one half cycle phase-shifted from a corresponding pixel in the first pixel line.
6. The method of claim 5 , comprising combing vertically, if the determined direction of least bandwidth is among corresponding in-phase pixels in the first pixel line and in the second pixel line.
7. The method of claim 5 , comprising combing vertically, if the determined direction of least bandwidth is among corresponding one-half cycle phase-shifted video samples in the first pixel line and in the second pixel line for a luma-only video signal.
8. The method of claim 2 , comprising generating a plurality of interpolated pixels for corresponding video samples in a first pixel line of a second video frame, so that each of the plurality of interpolated pixels in the first pixel line of the second video frame is one half cycle phase-shifted from a corresponding pixel in the first pixel line of the first video frame.
9. The method of claim 8 , comprising combing temporally, if the determined direction of least bandwidth is among corresponding in-phase pixels in the first pixel line of the first video frame and in the first pixel line of the second video frame.
10. The method of claim 8 , comprising combing temporally, if the determined direction of least bandwidth is among corresponding one-half cycle phase-shifted video samples in the first pixel line of the first video frame and in the first pixel line of the second video frame for a luma-only video signal.
11. The method of claim 1 , comprising combing in a horizontal direction and a vertical direction for the first video frame.
12. The method of claim 11 , comprising blending the combing in the horizontal direction and the vertical direction and combing in a temporal direction for the first video frame.
13. A machine-readable storage having stored thereon, a computer program having at least one code section for separating luma and chroma components in a composite video signal, the at least one code section being executable by a machine for causing the machine to perform steps comprising:
generating a plurality of interpolated pixels for corresponding video samples for a first video frame;
determining at least one direction of least bandwidth among the video samples and the interpolated pixels; and
blending combing according to the determined direction of least bandwidth.
14. The machine-readable storage of claim 13 , comprising code for generating a plurality of interpolated pixels for corresponding video samples in a first pixel line of the first video frame.
15. The machine-readable storage of claim 14 , comprising code for generating the plurality of interpolated pixels in the first pixel line, so that each of the plurality of interpolated pixels in the first pixel line is one quarter cycle phase-shifted from a corresponding adjacent pixel in the first pixel line.
16. The machine-readable storage of claim 15 , comprising code for combing horizontally, if the determined direction of least bandwidth is among in-phase pixels in the first pixel line.
17. The machine-readable storage of claim 14 , comprising code for generating a plurality of interpolated pixels for corresponding video samples in a second pixel line of the first video frame, so that each of the plurality of interpolated pixels in the second line is one half cycle phase-shifted from a corresponding pixel in the first pixel line.
18. The machine-readable storage of claim 17 , comprising code for combing vertically, if the determined direction of least bandwidth is among corresponding in-phase pixels in the first pixel line and in the second pixel line.
19. The machine-readable storage of claim 17 , comprising code for combing vertically, if the determined direction of least bandwidth is among corresponding one-half cycle phase-shifted video samples in the first pixel line and in the second pixel line for a luma-only video signal.
20. The machine-readable storage of claim 14 , comprising code for generating a plurality of interpolated pixels for corresponding video samples in a first pixel line of a second video frame, so that each of the plurality of interpolated pixels in the first pixel line of the second video frame is one half cycle phase-shifted from a corresponding pixel in the first pixel line of the first video frame.
21. The machine-readable storage of claim 20 , comprising code for combing temporally, if the determined direction of least bandwidth is among corresponding in-phase pixels in the first pixel line of the first video frame and in the first pixel line of the second video frame.
22. The machine-readable storage of claim 20 , comprising code for combing temporally, if the determined direction of least bandwidth is among corresponding one-half cycle phase-shifted video samples in the first pixel line of the first video frame and in the first pixel line of the second video frame for a luma-only video signal.
23. The machine-readable storage of claim 13 , comprising code for combing in a horizontal direction and a vertical direction for the first video frame.
24. The machine-readable storage of claim 23 , comprising code for blending the combing in the horizontal direction and the vertical direction and combing in a temporal direction for the first video frame.
25. A system for separating luma and chroma components in a composite video signal, the system comprising:
at least one processor that generates a plurality of interpolated pixels for corresponding video samples for a first video frame;
the at least one processor determines at least one direction of least bandwidth among the video samples and the interpolated pixels; and
the at least one processor blends combing according to the determined direction of least bandwidth.
26. The system of claim 25 , wherein the at least one processor generates a plurality of interpolated pixels for corresponding video samples in a first pixel line of the first video frame.
27. The system of claim 26 , wherein the at least one processor generates the plurality of interpolated pixels in the first pixel line, so that each of the plurality of interpolated pixels in the first pixel line is one quarter cycle phase-shifted from a corresponding adjacent pixel in the first pixel line.
28. The system of claim 27 , wherein the at least one processor combs horizontally, if the determined direction of least bandwidth is among in-phase pixels in the first pixel line.
29. The system of claim 26 , wherein the at least one processor generates a plurality of interpolated pixels for corresponding video samples in a second pixel line of the first video frame, so that each of the plurality of interpolated pixels in the second line is one half cycle phase-shifted from a corresponding pixel in the first pixel line.
30. The system of claim 29 , wherein the at least one processor combs vertically, if the determined direction of least bandwidth is among corresponding in-phase pixels in the first pixel line and in the second pixel line.
31. The system of claim 29 , wherein the at least one processor combs vertically, if the determined direction of least bandwidth is among corresponding one-half cycle phase-shifted video samples in the first pixel line and in the second pixel line for a luma-only video signal.
32. The system of claim 26 , wherein the at least one processor generates a plurality of interpolated pixels for corresponding video samples in a first pixel line of a second video frame, so that each of the plurality of interpolated pixels in the first pixel line of the second video frame is one half cycle phase-shifted from a corresponding pixel in the first pixel line of the first video frame.
33. The system of claim 32 , wherein the at least one processor combs temporally, if the determined direction of least bandwidth is among corresponding in-phase pixels in the first pixel line of the first video frame and in the first pixel line of the second video frame.
34. The system of claim 32 , wherein the at least one processor combs temporally, if the determined direction of least bandwidth is among corresponding one-half cycle phase-shifted video samples in the first pixel line of the first video frame and in the first pixel line of the second video frame for a luma-only video signal.
35. The system of claim 25 , wherein the at least one processor combs in a horizontal direction and a vertical direction for the first video frame.
36. The system of claim 35 , wherein the at least one processor blends the combing in the horizontal direction and the vertical direction and combing in a temporal direction for the first video frame.
37. A method for separating luma and chroma components in a composite video signal, the method comprising combing utilizing non-thresholded blending based on relative bandwidth in each of a plurality of three directions.
38. The method of claim 37 , comprising combing utilizing non-thresholded blending based on relative bandwidth in a horizontal direction.
39. The method of claim 37 , comprising combing utilizing non-thresholded blending based on relative bandwidth in a vertical direction.
40. The method of claim 37 , comprising combing utilizing non-thresholded blending based on relative bandwidth in a temporal direction.