Method for transcoding a JPEG2000 compressed image

Details Method for transcoding a JPEG2000 compressed image Method for transcoding a JPEG2000 compressed image

2007-04-03

2007-04-03

Wu, Jingge (Department: 2624)

Image analysis

Image compression or coding

Transform coding

C382S240000, C375S240190

Reexamination Certificate

active

10611026

ABSTRACT:
A JPEG2000 compressed image is transcoded to a lower bit-rate or lower resolution, or both, without having to decompress the initial JPEG2000 image and then recompress it to a lower bit-rate and/or resolution. Instead, arithmetic decoding is performed only to the nearest higher bit-rate layer, up to the desired resolution, before performing rate-distortion optimization to produce the transcoded image.

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