Image processing system for compressing image data including...

Details Image processing system for compressing image data including... Image processing system for compressing image data including...

2006-01-10

2006-01-10

Au, Amelia M. (Department: 2621)

Image analysis

Image compression or coding

Transform coding

C382S251000

Reexamination Certificate

active

06985634

ABSTRACT:
An image processing system which compresses an image including both a binary image and a continuous tone image by a sub-band transform method with a high compression rate. A 2×2 pixel matrix block is extracted from image data. A transform factor having a plurality of frequency components is obtained from the 2×2 pixel matrix block data. The transform factor is quantized by a fixed-length quantizing method by deleting a predetermined number of lower order bits of each of the frequency components.

REFERENCES:
patent: 5086488 (1992-02-01), Kato et al.
patent: 5253075 (1993-10-01), Sugiyama
patent: 5301032 (1994-04-01), Hong et al.
patent: 5345317 (1994-09-01), Katsuno et al.
patent: 5432870 (1995-07-01), Schwartz
patent: 5442459 (1995-08-01), Gahang
patent: 5539842 (1996-07-01), Schwartz
patent: 5729633 (1998-03-01), Watanabe et al.
patent: 5818974 (1998-10-01), Kimura et al.
patent: 5841473 (1998-11-01), Chui et al.
patent: 5881176 (1999-03-01), Keith et al.
patent: 5909518 (1999-06-01), Chui
patent: 6400844 (2002-06-01), Fan et al.
patent: 6459816 (2002-10-01), Matsumura et al.
patent: 6603884 (2003-08-01), Matsuura et al.
patent: 62-193382 (1987-08-01), None
patent: 1-135265 (1989-05-01), None
patent: 2-305272 (1990-12-01), None
patent: 4-144485 (1992-05-01), None
patent: 4-315371 (1992-11-01), None
patent: 05-176180 (1993-07-01), None
patent: 06-350992 (1994-12-01), None
patent: 7-74959 (1995-03-01), None
patent: 7/87327 (1995-03-01), None
patent: 7-95579 (1995-04-01), None
patent: 08-186715 (1996-07-01), None
patent: 09-187005 (1997-07-01), None
U.S. Appl. No. 10/730,019, filed Dec. 9, 2003, Matsuura et al.
U.S. Appl. No. 10/986,781, filed Nov. 15, 2004, Matsuura et al.

Affiliated with

Also associated with

Rating

Image processing system for compressing image data including... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Image processing system for compressing image data including..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Image processing system for compressing image data including... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3587016