Image analysis – Image compression or coding – Lossless compression
Reexamination Certificate
2007-08-28
2007-08-28
Bella, Matthew C. (Department: 2624)
Image analysis
Image compression or coding
Lossless compression
C382S166000
Reexamination Certificate
active
11255310
ABSTRACT:
A transformation system for increasing the compressibility of digital images. In one embodiment, the pixels of a digital image are examined, one at a time. The color of the examined pixel is compared to that of its neighbors. If the difference in color from either of the neighboring pixels is below a threshold, the color of the neighbor that is closer to the color of the examined pixel is copied to the examined pixel. If neither of the neighbors is close enough in color, the color of the examined pixel is unchanged. The pixels are examined in a single pass. After each pixel has been examined, and possibly changed, the compressibility of the image using a dictionary-based technique, such as one of the Lempel-Ziv techniques, is typically improved.
REFERENCES:
patent: 4571634 (1986-02-01), Caneschi et al.
patent: 4631521 (1986-12-01), El-Sherbini
patent: 5243446 (1993-09-01), Pollich et al.
patent: 5497434 (1996-03-01), Wilson
patent: 5630036 (1997-05-01), Sonohara et al.
patent: 5825917 (1998-10-01), Suzuki
patent: 5915077 (1999-06-01), Kulkarni et al.
patent: 5982937 (1999-11-01), Accad
patent: 6005979 (1999-12-01), Chang et al.
patent: 6009192 (1999-12-01), Klassen et al.
patent: 6438270 (2002-08-01), Harrington
patent: 6525725 (2003-02-01), Deering
patent: 7031540 (2006-04-01), De Bonet
patent: 7062087 (2006-06-01), Varga
patent: 2001/0054131 (2001-12-01), Alvarez et al.
patent: 2002/0000988 (2002-01-01), Nelson et al.
patent: H03-018176 (1991-01-01), None
patent: H06-103371 (1994-04-01), None
patent: H09-27966 (1997-01-01), None
patent: H08-154179 (1998-06-01), None
patent: H10-191074 (1998-07-01), None
International Search Report for PCT/US02/28994, Dec. 4, 2002.
D'Ornellas et al., “Morphological Algorithms for Color Image Based on Generic-Programming Approach”, International Symposium on Computer Graphics, Image processing, and Vision, p. 435, 1998.
Natarajan B K et al., “Effective Nearly Lossless Compression of Digital Video Sequences Via Motion-Compensated Filtering”, Acoustics, Speech, and Signal Processing, vol. V, pp. V-441 through V-443, Apr. 19, 1994.
Klette et al., “Handbook of Image Processing Operators Passage”, Handbook of Image Processing Operators, pp. 206-208, 258-261, 1996.
Bella Matthew C.
MobiTV, Inc.
Shah Utpal
Sprinkle IP Law Group
LandOfFree
Transformation to increase the Lempel-Ziv compressibility of... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Transformation to increase the Lempel-Ziv compressibility of..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Transformation to increase the Lempel-Ziv compressibility of... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3847318