System and method for static region detection in video processing

• US 20070103586A1
• Filed: 11/10/2005
• Published: 05/10/2007
• Est. Priority Date: 11/10/2005
• Status: Active Grant

• Current Assignee: Avago Technologies General IP PTE Limited (Broadcom, Inc.)
• Original Assignee: Broadcom Corporation (Broadcom, Inc.)
• Inventors: Feng, Chenhui, Maclnnis, Alexander
• Granted Patent: US 7,750,974 B2
• Time in Patent Office: Days
• US Class Current: 348/448
• CPC Class Codes: H04N 5/144 Movement detection for video coding H04N19/503; analysis of motion in general G06T7/20
• CPC Class Codes: H04N 7/012 Conversion between an interlaced and a progressive signal for graphics images G09G2310/0229

Abstract

A system and method for processing video information are disclosed and may include calculating at least one pixel difference between at least one pixel in a first field and at least one corresponding aligned pixel in a second field. The first field and the second field may be adjacent to a current field. At least one pixel in the current field may be deinterlaced based at least in part on the calculated at least one pixel difference. A first pixel difference between a first pixel in the first field and a corresponding aligned second pixel in the second field may be calculated. A second pixel difference between a third pixel in the first field and a corresponding aligned fourth pixel in the second field may be calculated. The third pixel and the fourth pixel may be adjacent to a current output sample.

Claims

1. A method for processing video information, the method comprising:

calculating at least one pixel difference between at least one pixel in a first field and at least one corresponding aligned pixel in a second field, wherein said first field and said second field are adjacent to a current field; and

deinterlacing at least one pixel in said current field based at least in part on said calculated at least one pixel difference.

2. The method according to claim 1, further comprising calculating a first pixel difference between a first pixel in said first field and a corresponding aligned second pixel in said second field.

3. The method according to claim 2, further comprising calculating a second pixel difference between a third pixel in said first field and a corresponding aligned fourth pixel in said second field.

4. The method according to claim 3, wherein said third pixel and said fourth pixel are adjacent to a current output sample.

5. The method according to claim 3, further comprising calculating a third pixel difference between a sixth pixel in said first field and a corresponding aligned seventh pixel in said second field.

6. The method according to claim 1, further comprising generating a blend control value based at least in part on said calculated at least one pixel difference.

7. The method according to claim 6, further comprising limiting said blend control value to a particular range.

8. The method according to claim 7, wherein said limiting of said blend control value is achieved via at least one of:

a look-up table, a scaling function, and a clipping function.

9. The method according to claim 7, further comprising deinterlacing said at least one pixel in said current field based on said limited blend control value.

10. A method for processing video information, the method comprising:

calculating at least one pixel difference between a first plurality of pixels in a first pixel region and a second plurality of corresponding aligned pixels in a second pixel region, wherein said first pixel region and said second pixel region comprise a current output sample location; and

determining the value of said current output sample based at least in part on said calculated at least one pixel difference.

11. The method according to claim 10, wherein said first plurality of pixels and said second plurality of corresponding aligned pixels comprise at least one of the following:

vertically adjacent pixels and horizontally adjacent pixels.

12. A system for processing video information, the system comprising:

at least one processor that enables calculation of at least one pixel difference between at least one pixel in a first field and at least one corresponding aligned pixel in a second field, wherein said first field and said second field are adjacent to a current field; and

said at least one processor enables deinterlacing of at least one pixel in said current field based at least in part on said calculated at least one pixel difference.

13. The system according to claim 12, wherein said at least one processor enables calculation of a first pixel difference between a first pixel in said first field and a corresponding aligned second pixel in said second field.

14. The system according to claim 13, wherein said at least one processor enables calculation of a second pixel difference between a third pixel in said first field and a corresponding aligned fourth pixel in said second field.

15. The system according to claim 14, wherein said third pixel and said fourth pixel are adjacent to a current output sample.

16. The system according to claim 14, wherein said at least one processor enables calculation of a third pixel difference between a sixth pixel in said first field and a corresponding aligned seventh pixel in said second field.

17. The system according to claim 12, wherein said at least one processor enables generation of a blend control value based at least in part on said calculated at least one pixel difference.

18. The system according to claim 17, wherein said at least one processor enables limiting of said blend control value to a particular range.

19. The system according to claim 18, wherein said limiting of said blend control value is achieved via at least one of:

a look-up table, a scaling function, and a clipping function.

20. The system according to claim 18, wherein said at least one processor enables deinterlacing of said at least one pixel in said current field based on said limited blend control value.

21. A system for processing video information, the system comprising:

at least one processor that enables calculation of at least one pixel difference between a first plurality of pixels in a first pixel region and a second plurality of corresponding aligned pixels in a second pixel region, wherein said first pixel region and said second pixel region comprise a current output sample location; and

said at least one processor enables determination of the value of said current output sample based at least in part on said calculated at least one pixel difference.

22. The system according to claim 21, wherein said first plurality of pixels and said second plurality of corresponding aligned pixels comprise at least one of the following:

vertically adjacent pixels and horizontally adjacent pixels.