Method and system for video frame enhancement using edge detection

• US 6,898,319 B1
• Filed: 09/11/1998
• Issued: 05/24/2005
• Est. Priority Date: 09/11/1998
• Status: Expired due to Term

• Current Assignee: Intel Corporation
• Original Assignee: Intel Corporation
• Inventors: Sharma, Ravi K., Hazra, Rajeeb
• Primary Examiner(s): Rogers, Scott A.
• Application Number:
  US09/151,555
• Time in Patent Office: 2,447 Days
• Field of Search: 358/426.12, 382/233, 382/239, 382/268, 382/232, 382/254, 382/260, 382/266, 382/199, 382/234, 382/242, 382/243, 382/261, 382/269, 382/275, 348/845, 375/240.26, 375/240.29
• US Class Current: 382/232
• CPC Class Codes: G06T 2207/10016 Video; Image sequence
• CPC Class Codes: G06T 2207/20012 Locally adaptive
• CPC Class Codes: G06T 2207/20192 Edge enhancement; Edge preservation
• CPC Class Codes: G06T 5/20 using local operators
• CPC Class Codes: G06T 5/70 Denoising; Smoothing
• CPC Class Codes: G06T 5/73 Deblurring; Sharpening
• CPC Class Codes: G06T 7/13 Edge detection
• CPC Class Codes: H04N 19/86 involving reduction of coding artifacts, e.g. of blockiness

Abstract

Briefly, in accordance with one embodiment of the invention, a video processing system includes: a video coder. The video coder includes the capability to generate an edge detection map along a predetermined direction for an uncoded frame that is to be coded.

Briefly, in accordance with another embodiment of the invention, an article includes: a storage medium having stored thereon instructions capable of being executed by a system that when executed result in: producing an edge detection map along a predetermined direction from the video frame prior to coding; and coding the edge detection map and the video frame.

Briefly, in accordance with one more embodiment of the invention, a method of processing a video frame includes: producing an edge detection map along a predetermined direction from the video frame prior to coding; and coding the edge detection map and the video frame.

Briefly, in accordance with still one more embodiment of the invention, a video processing system includes: a video frame processor to generate an edge detection map from an uncoded video frame to be coded, the video frame processor further including the capability to code the edge detection map.

Claims

1. A video processor system comprising:

a video coder, to generate an edge detection map along a predetermined direction for an uncoded frame that is to be coded, to code said uncoded frame, and to compress the edge detection map, wherein the edge detection map is compressed separately from the coded frame

wherein the video processor system codes the edge detection map for transmission along with an associated video frame that is not edge detected.

2. The video processing system of claim 1, wherein the predetermined direction comprises one of the vertical and horizontal direction.

3. The video processing system of claim 1, and further comprising a video decoder.

4. The video processing system of claim 3, wherein the video decoder includes an edge-sensitive post-filter to enhance a decoded video frame based, at least in part, on a decoded edge detection map associated with the decoded frame.

5. A video processing system comprising:

a video frame processor to generate an edge detection map from an uncoded video frame to be coded, to code said uncoded video frame, and to code the edge detection map, wherein the video processing system codes the edge detection map for transmission along with an associated video frame that is not edge detected.

6. The video processing system of claim 5, wherein the video processing system codes the edge detection map for transmission via a communications channel separately from an associated video frame.

7. The video processing system of claim 5, wherein the processing system codes the edge detection map for storage along with an associated coded video frame.

8. The video processing system of claim 5, wherein the video processing system codes the edge detection map for storage separately from an associated coded video frame.

9. A method of processing a video frame comprising:

producing an edge detection map along a predetermined direction from the video frame prior to coding;

coding the edge detection map and the video frame; and

transmitting the edge detection map along with an associated video frame that is not edge detected.

10. The method of claim 9, wherein the predetermined direction comprises one of a horizontal direction and a vertical direction.

11. The method of claim 9, wherein producing an edge detection map includes producing more than one edge detection map along more than one direction;

and

wherein coding includes coding the more than one edge detection map.

12. The method of claim 11, and further comprising:

decoding the coded edge detection maps and video frame.

13. The method of claim 12, wherein decoding includes applying an edge-sensitive post-filter, the edge-sensitive post-filter including the capability to enhance a decoded video frame based, at least in part, on decoded edge detection maps associated with the decoded frame.

14. The method of claim 9, and further comprising:

decoding the coded edge detection map and video frame.

15. The method of claim 14, wherein decoding includes applying an edge-sensitive post-filter including the capability to enhance a decoded video frame based, at least in part, on a decoded edge detection map associated with the decoded frame.

16. The method of claim 15, further comprising:

storing the coded video image and edged detection map before decoding.

17. The method of claim 15, and further comprising:

transmitting the coded video image and edge detection map via a bandwidth limited communications channel prior to decoding.

18. An article comprising:

a storage medium having stored therein instructions capable of being executed by a system that when executed result in;

producing an edge detection map along a predetermined direction from the video frame prior to coding;

coding the edge detection map and the video frame; and

transmitting the edge detection map along with an associated video frame that is not edge detected.

19. The article of claim 18, wherein the predetermined direction comprises one of a horizontal direction and a vertical direction.

20. The article of claim 18, wherein producing an edge detection map includes producing more than one edge detection map along more than one direction;

and

wherein coding includes coding the more than one edge detection map.

21. The article of claim 20, and further comprising:

decoding the coded edge detection maps and video frame.

22. The article of claim 21, wherein decoding includes applying an edge-sensitive post-filter to enhance a decoded video frame based, at least in part, on decoded edge detection maps associated with the decoded frame.

23. The article of claim 21, wherein decoding includes applying an edge-sensitive post-filter to enhance a decoded video frame based, at least in part, on decoded edge detection maps associated with the decoded frame.

24. The article of claim 18, further comprising:

decoding the coded edge detection map and video frame.

25. The article of claim 24, wherein decoding includes applying an edge-sensitive post-filter to enhance a decoded video frame based, at least in part, on a decoded edge detection map associated with the decoded frame.

26. The article of claim 25, and further comprising:

storing the coded video image and edged detection map before decoding.

27. The article of claim 25, and further comprising:

transmitting the coded video image and edge detection map via a bandwidth limited communications channel prior to decoding.