Image analysis – Image compression or coding – Adaptive coding
Reexamination Certificate
2007-11-27
2007-11-27
LaRose, Colin (Department: 2624)
Image analysis
Image compression or coding
Adaptive coding
C382S243000, C725S010000
Reexamination Certificate
active
11361434
ABSTRACT:
Methods and systems for compression of digital images (still or motion sequences) are provided wherein predetermined criteria may be used to identify a plurality of areas of interest in the image, and each area of interest is encoded with a corresponding quality level (Q-factor). In particular, the predetermined criteria may be derived from measurements of where a viewing audience is focusing their gaze (area of interest). In addition, the predetermined criteria may be used to create areas of interest in an image in order to focus an observer's attention to that area. Portions of the image outside of the areas of interest are encoded at a lower quality factor and bit rate. The result is higher compression ratios without adversely affecting a viewer's perception of the overall quality of the image.
REFERENCES:
patent: 3507988 (1970-04-01), Holmes
patent: 4028725 (1977-06-01), Lewis
patent: 4348186 (1982-09-01), Harvey et al.
patent: 4439157 (1984-03-01), Breglia et al.
patent: 4568159 (1986-02-01), Baldwin
patent: 4755045 (1988-07-01), Borah et al.
patent: 4836670 (1989-06-01), Hutchinson
patent: 4852988 (1989-08-01), Velez et al.
patent: 5103306 (1992-04-01), Weiman et al.
patent: 5333212 (1994-07-01), Ligtenberg
patent: 5592226 (1997-01-01), Lee et al.
patent: 5764803 (1998-06-01), Jacquin et al.
patent: 5896176 (1999-04-01), Das et al.
patent: 5909240 (1999-06-01), Hori
patent: 6144772 (2000-11-01), Garland et al.
patent: 6252989 (2001-06-01), Geisler et al.
patent: 6256423 (2001-07-01), Krishnamurthy et al.
patent: 6356664 (2002-03-01), Dunn et al.
patent: 6389169 (2002-05-01), Stark et al.
patent: 6476873 (2002-11-01), Maeng
patent: 6496607 (2002-12-01), Krishnamurthy et al.
patent: 00240336 (1987-10-01), None
patent: 00402954 (1990-12-01), None
patent: 00735773 (1996-10-01), None
Atsumi et al., “Lossy/lossless Region-of-Interest Coding Based on Set Partitioning in Hierarchical Trees,” Proceedings 1998 Int'l Conf. Image Processing, 1:87-91, Oct. 1998.
Keeney Richard A.
Olson Thor A.
Electronics for Imaging, Inc.
LaRose Colin
Trosino James
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