Method and apparatus for coding image information, method...

Details Method and apparatus for coding image information, method... Method and apparatus for coding image information, method...

2007-11-13

2007-11-13

An, Shawn S. (Department: 2621)

Pulse or digital communications

Bandwidth reduction or expansion

Television or motion video signal

C375S240250, C375S240200, C375S240050, C375S240180, C375S240260, C382S251000, C382S233000, C382S250000, C382S248000, C382S235000

Reexamination Certificate

active

10304950

ABSTRACT:
An image information coding apparatus codes an input image signal in a manner optimized on the basis of the visual characteristics. In quantization, an input image signal is divided into blocks, an orthogonal transform is performed on a block-by-block basis, and resultant orthogonal transform coefficients are quantized. A quantizer includes a weighter for, in the quantization, performing weighting on each component of the orthogonal transform coefficients by means of an addition operation on a parameter specifying one of elements of a series of numbers arranged in accordance with a predetermined rule in correspondence with quantization step sizes.

REFERENCES:
patent: 6385242 (2002-05-01), Chen
patent: 6385247 (2002-05-01), De With et al.
patent: 6445739 (2002-09-01), Shen et al.
patent: 6834080 (2004-12-01), Furukawa et al.

Affiliated with

Also associated with

Rating

Method and apparatus for coding image information, method... 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 apparatus for coding image information, method..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for coding image information, method... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3819112