[Theora-dev] Re: PC-based video server

Timothy B. Terriberry tterribe at vt.edu
Wed Jan 26 23:42:21 PST 2005

Andrey Filippov wrote:
>   I just never thought there is a way to use coefficients form say 4 
> (2x2) blocks to build 1 block of twice lower resolution with small
> number of arithmetic operation. Yes, it should be so - that's a good
> idea - I just didn't understand it at once.

Sure, such techniques are well known. For example, see: 

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