Last modified: Thu Jul 23 14:36:27 UTC+0200 2026 © A. Tarpai

JPEG

To my best knowledge, the patent on the QM-coder used in JPEG has expired. I've read this post recently and started to put some arithmetic decoding into C code. After some crunching days of development this is the result: sample image from that post is on one screen - the decoded on the other one.

Decoder code was based on my JPEG81 coefficient decoder.

20151012

More to come..