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Re: Huffman group coding (?)
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| 3rdtry@willets.org 2005-07-25, 5:08 pm |
| I read through that stuff a year or two ago. I think it divides the L
vector into small chunks, and then tries each Huffman coding table on
each chunk until it finds the one that gives the best compression.
There should be a flag on each chunk that identifies the coding table
used.
It's a mess, in other words.
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| Ulrich Lauther 2005-08-10, 3:59 am |
| 3rdtry@willets.org wrote:
: I read through that stuff a year or two ago. I think it divides the L
: vector into small chunks, and then tries each Huffman coding table on
: each chunk until it finds the one that gives the best compression.
after having grouped the chunks into (few) clusters that each use a different
coding table, it is easy to calculate the appropriate table for each
cluster.
However, where do the initial tables come from that are used to classify
the chunks? Looks like a chicken and egg problem to me.
If you have been able to understand the code, please enlighten me!
Best,
-ulrich
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