ENHANCING VIDEO SHARPNESS AND CONTRAST BY LUMINANCE AND CHROMINANCE TRANSIENT IMPROVEMENT

• US 20100177249A1
• Filed: 01/18/2010
• Published: 07/15/2010
• Est. Priority Date: 06/20/2005
• Status: Active Grant

• Current Assignee: Walid S. Ali
• Original Assignee: Walid S. Ali
• Inventors: Ali, Walid S.
• Granted Patent: US 8,031,956 B2
• Time in Patent Office: Days
• US Class Current: 348/625
• CPC Class Codes: G06T 2207/20016 Hierarchical, coarse-to-fine, multiscale or multiresolution image processing; Pyramid transform
• CPC Class Codes: G06T 2207/20064 Wavelet transform [DWT]
• CPC Class Codes: G06T 2207/20192 Edge enhancement; Edge preservation
• CPC Class Codes: G06T 5/10 using non-spatial domain filtering
• CPC Class Codes: G06T 5/73 Deblurring; Sharpening
• CPC Class Codes: H04N 5/142 Edging; Contouring

Abstract

An apparatus, system, method, and article for enhancing video sharpness are described. The apparatus may include a media processing node to enhance sharpness of an input image. The media processing node may include a wavelet decomposition module to perform wavelet decomposition of the input image to detect and modify edge information. Other embodiments are described and claimed.

Claims

1. An apparatus, comprising:

a media processing node to enhance sharpness of an input image, said media processing node comprising a wavelet decomposition module to perform wavelet decomposition of said input image to detect and modify edge information.

2. The apparatus of claim 1, wherein said input image comprises a picture in a video sequence comprising signals sampled in a horizontal direction and in a vertical direction.

3. The apparatus of claim 1, wherein said wavelet decomposition comprises two-dimensional orthogonal wavelet decomposition.

4. The apparatus of claim 1, wherein said wavelet decomposition module is to perform multiple levels of decomposition.

5. The apparatus of claim 1, further comprising an edge enhancement module to enhance wavelet decomposition output from said wavelet decomposition module.

6. The apparatus of claim 5, wherein said edge enhancement module is to enhance high frequency components of said wavelet decomposition output.

7. The apparatus of claim 1, further comprising a reconstruction module to perform image reconstruction using wavelet decomposition output from said wavelet decomposition module.

8. A system, comprising:

a source node; and

a media processing node to couple to said source node, said media processing node comprising a wavelet decomposition module to perform wavelet decomposition of said input image to detect and modify edge information.

9. The system of claim 8, wherein said input image comprises a picture in a video sequence comprising signals sampled in a horizontal direction and in a vertical direction.

10. The system of claim 8, wherein said wavelet decomposition comprises two-dimensional orthogonal wavelet decomposition.

11. The system of claim 8, wherein said wavelet decomposition module is to perform multiple levels of decomposition.

12. The system of claim 8, further comprising an edge enhancement module to enhance wavelet decomposition output from said wavelet decomposition module.

13. The system of claim 12, wherein said edge enhancement module is to enhance high frequency components of said wavelet decomposition output.

14. The system of claim 8, further comprising a reconstruction module to perform image reconstruction using wavelet decomposition output from said wavelet decomposition module.

15. A method, comprising:

receiving an input image; and

performing wavelet decomposition of said input image to detect and modify edge information.

16. The method of claim 15, wherein said input image comprises a picture in a video sequence comprising signals sampled in a horizontal direction and in a vertical direction.

17. The method claim 15, further comprising performing two-dimensional orthogonal wavelet decomposition.

18. The method of claim 15, further comprising performing multiple levels of decomposition.

19. The method of claim 15, further comprising enhancing wavelet decomposition output.

20. The method of claim 19, further comprising enhancing high frequency components of said wavelet decomposition output.

21. The method of claim 15, further comprising performing image reconstruction using wavelet decomposition output.

22. An article comprising a machine-readable storage medium containing instructions that if executed enable a system to:

receive an input image; and

perform wavelet decomposition of said input image to detect and modify edge information.

23. The article of claim 22, wherein said input image comprises a picture in a video sequence comprising signals sampled in a horizontal direction and in a vertical direction.

24. The article of claim 22, further comprising instructions that if executed enable the system to perform two-dimensional orthogonal wavelet decomposition.

25. The article of claim 22, further comprising instructions that if executed enable the system to perform multiple levels of decomposition.