Results 1 to 8 of 8

Thread: CSC 3.1 is here!

Threaded View

Previous Post Previous Post   Next Post Next Post
  1. #1
    Member Fu Siyuan's Avatar
    Join Date
    Apr 2009
    Mountain View, CA, US
    Thanked 17 Times in 2 Posts

    Smile CSC 3.1 is here!

    Hello all!

    I wrote much in the new thread however I misclick the 'close button'.

    Brief introduction this time:

    New version is based on CSC 3. And I made some changes,mainly HashChain-4byte changed
    to HashChain-6byte.So it can find longer matches in less search cycles. And the coder
    now is using bit operation to handle bits with P=0.5 (like extra bits of match distance).
    So decompression is faster. I added a simple detector. It calcuate entropy of different
    channels of each small block. And use delta in some situation.However,the delta coding
    scheme is so bad so it works poor on audio/bmp, but better than nothing. E89 transforming
    also be used when necessary. The decompression process now checks the data, so it has less
    chance to crash without warning message.
    These changes leads to big progress: Now it ranked 4 on CompressionRatings .

    Thanks to all on the forum who helped me and Sami Runsas!
    Attached Files Attached Files

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts