A new version of HP's JPEG-LS software implementation (V0.90) is
The new version reflects minor changes resulting from the November
meeting of the ISO/JTC1/SC29/WG1 (JPEG) standards committee.
In particular, the JPEG markers assigned to JPEG-LS were changed as
JPEG-LS Start of frame (SOF): from X'FFF0' (old) to X'FFF7' (new).
JPEG-LS parameters (LSE) from X'FFF2' (old) to X'FFF8' (new).
These changes, of course, do not affect compressed file sizes, but
they do affect binary stream compatibility. Thus, files compressed
with previous versions of the software (V0.87 and older) are
incompatible with V0.90 and with the standard. The latter is expected
to attain DIS status in mid December.
New at the Web site:
- JPEG-LS executables for SGI machines.
- An archive containing the images used for standard
conformance testing as specified in the final draft
of 14495-1 (JPEG-LS).
Palo Alto, California