changes_from_vm7_1.txt

JPEG2000实现的源码

                        CHANGES IN VM7.2 FROM VM7.1
                       ============================

Bug/Warning Fixes
-----------------
  * Corrected incomplete usage statement due to freeing non-allocated 
    transform object memory.

  * Image Reader:

    - Corrected multi-component wild card logic which allowed only one
      rate iteration.

    - Corrected two warnings due to assigning character positions to NULL.

  * TCQ/LRA:

    - Corrected logic which completely avoided LRA.

    - Installed coding object logic for LRA to avoid inclusion of bits from 
      certain subbands.  This allows LRA to achieve very small encoded file 
      sizes.

    - Installed limits on the smallest LRA step sizes to avoid precision 
      problems when writing step sizes to the bitstream.

    - Corrected array indices for forcing the last three code block 
      bit-planes of TCQ codewords in the same packet.  This fixes occasional
      crashes for TCQ at small rates.