Modification of detected quantization step size from the...

Details Modification of detected quantization step size from the... Modification of detected quantization step size from the...

2005-11-22

2005-11-22

Couso, Yon J. (Department: 2625)

Image analysis

Image compression or coding

Adaptive coding

C382S240000

Reexamination Certificate

active

06968088

ABSTRACT:
An image processing apparatus for encoding an image which contains a region to be encoded to have higher image quality than the surrounding portions, has detection means (100) for detecting a quantization step from a bitstream of the image encoded in a first stage, quantization step control means (103) for controlling the detected quantization step, and selection means (102) for encoding the image in a second stage using the controlled quantization step, and selecting one of the images encoded in the first and second stages.

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H. Toda, “Special Report JPEG2000 Explore Next Generation Image Technique”, C Magazine, Nov. 1999, pp. 6-10.

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