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Monday, April 7, 2014

Taking advantage of unequalities to provide better compression

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 When starting investigation on ANS properties, in November 2013, I stumbled upon the fact that  positions in the table are not equivalent...
Wednesday, April 2, 2014

Ultra-fast normalization

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 Today's objective is to use the lessons learned when defining the perfect normalization algorithm to design a new, better, fast norm...
Friday, March 7, 2014

Perfect Normalization

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 People keeping an eye on the github repository of FSE may have noticed the apparition a new function, called FSE_normalizeCount HC (). L...
2 comments:
Sunday, March 2, 2014

Better normalization, for better compression

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 A secondary issue to deal with when implementing an FSE entropy coder is the requirement to normalize statistics. Basically, it consists ...
Friday, February 28, 2014

FSE encoding : Mapping sub-ranges in a memory efficient way

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 With last blog post , we were left with a description of the FSE compression algorithm. However, the code associated was a bit cryptic. S...
11 comments:
Tuesday, February 25, 2014

FSE encoding, Part 2

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 In previous article , we learned how to determine the number of bits to write, and which bits to write, when encoding a symbol using F...
Wednesday, February 19, 2014

FSE encoding : how it works

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 Quite unusually, we have started this serie on FSE by focusing on the decompression part. It may seem strange to try to decode a data we...
4 comments:
Friday, February 14, 2014

FSE decoding : wrap up

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 With all the previous articles written on FSE , it seems we now have all elements to build a complete FSE decoder. Let's wrap up all th...