changes_from_vm8.5.txt

JPEG2000实现的源码

                        CHANGES IN VM8.6 FROM VM8.5
                       ============================

Alignment of VM with FDIS:
--------------------------

 * Flipped sign of wavelet coefficients for reversible 5x3 in LH and HL 
   subbands.

 * Corrected irreversible processing of single sample processing of 
   sequences aligned on odd boundaries.  Such samples are now multiplied/
   divided by 2 instead of simply passed through.

 * Corrected processing order for components in RCT/IRCT component 
   transforms.

Bug Fixes:
----------

 * Modified DC offset to use different default values (based on component 
   bitdepth) for each component.

 * Fixed possible mis-match between precinct settings and number of wavelet 
   levels.

 * Corrected non-tile specific decoding of header information for `-Beph' 
   and `-Bresync' encoder options.