Ot: Need Help With Compression Technique

Discussion in 'Software' started by HarryPotter, Apr 2, 2020.

  1. HarryPotter

    HarryPotter MajorGeek

    Hi! I am working on a compression technique and am having a problem: I'm not doing well enough. I am using LZ77, Canonical Huffman codes, BPE and some of my own ideas. Based on the information I gave, what can I do to improve the technique?
     
  2. _nullptr

    _nullptr Major Geeky Geek Geek

    Have a look at the method used by KGB archiver and preferably on modern hardware. For a highly compressible file format like a bitmap you should achieve compression of around 5.6%. To achieve such compression level (on modern hardware) you're looking at using 1.5GB ram and 20% cpu over 8 cores. To compress a 1.5MB bitmap is going to take 30 to 40 seconds, making this a highly impractical method.

    Personally I'd just use 7zip's LZMA2 method at extreme as the best trade off between compression vs time.
     
    Eldon likes this.
  3. HarryPotter

    HarryPotter MajorGeek

    I thank you. I'll look at LZMA2 now. :)
     
  4. HarryPotter

    HarryPotter MajorGeek

    I tried two techniques from there. They didn't work with my technique. :(
     

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