Image analysis – Image segmentation
Reexamination Certificate
2011-04-12
2011-04-12
Ahmed, Samir A (Department: 2624)
Image analysis
Image segmentation
C382S264000, C382S275000
Reexamination Certificate
active
07925086
ABSTRACT:
A method and a system for adaptively (dynamically) reducing quantization layer reduction for removing quantization artifacts in quantized video signals is provided. Adaptively reducing quantization layer reduction involves detecting if a selected pixel in a quantized image belongs to a ramp area in each of multiple pre-defined directions, dynamically selecting a quantization level for each of the pre-defined directions based on the corresponding detection results, and refining the pixel based on the selected quantization levels.
REFERENCES:
patent: 5218649 (1993-06-01), Kundu et al.
patent: 5598482 (1997-01-01), Balasubramanian et al.
patent: 5801657 (1998-09-01), Fowler et al.
patent: 5802218 (1998-09-01), Brailean
patent: 6668097 (2003-12-01), Hu et al.
patent: 6724942 (2004-04-01), Arai
patent: 6862372 (2005-03-01), Yang et al.
patent: 6983078 (2006-01-01), Baggs
patent: 7003174 (2006-02-01), Kryukov et al.
patent: 7148831 (2006-12-01), Krymski
patent: 7203234 (2007-04-01), Zeng
patent: 7218418 (2007-05-01), Curry et al.
patent: 7420570 (2008-09-01), Xu et al.
patent: 7541963 (2009-06-01), Krymski
patent: 7551795 (2009-06-01), Xu et al.
patent: 2003/0179945 (2003-09-01), Akahori
patent: 2006/0104535 (2006-05-01), Varekamp
patent: 2008/0118170 (2008-05-01), Zhou et al.
Floyd, R.W. et al., “An Adaptive Algorithm for Spatial Greyscale,” Proceeding of the Society for Information Display, vol. 17, No. 2, 1976, pp. 75-77, United States.
Ulichney, R.A., “Dithering with Blue Noise,” Proceedings of IEEE, vol. 76, No. 1, Jan. 1988, pp. 56-79, United States.
U.S. Non-final Office Action for U.S. Appl. No. 11/603,466 mailed Mar. 9, 2010.
U.S. Notice of Allowance for U.S. Appl. No. 11/603,466 mailed Jun. 24, 2010.
U.S. Non-final Office Action for U.S. Appl. No. 11/264,973 mailed May 13, 2008.
U.S. Final Office Action for U.S. Appl. No. 11/264,973 mailed Dec. 3, 2008.
U.S. Notice of Allowance for U.S. Appl. No. 11/264,973 mailed Feb. 20, 2009.
Kim Yeong-Taeg
Zhou Zhi
Ahmed Samir A
Li Ruiping
Myers Andras Sherman & Zarrabian LLP
Samsung Electronics Co Ltd.
Sherman, Esq. Kenneth L.
LandOfFree
Method and system for adaptive quantization layer reduction... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and system for adaptive quantization layer reduction..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and system for adaptive quantization layer reduction... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2722579