Re: Re: MMX version of 4x4 Forward Transform

"Aitor Garay" <[email protected]> Mon, 31 Mar 2003 13:56:35 +0200

Newsgroups	gmane.comp.video.h264.devel
Message-ID	<001401c2f77c$95089c10$bcb31fac@HAJC0062>

    Why that emphasis on _first_ vertical, and _then_ horizontal?  I'm not a matrix expert, but i
have checked and the order seems not to affect the result.  The dynamic range of the intermediate
values should be the same, so it is not an accuracy issue.

    /AITOR

  ----- Original Message ----- 
  From: [email protected] 
  To: [email protected] ; [email protected] 
  Sent: Monday, March 31, 2003 12:24 PM
  Subject: Re: Re: [Hdot264-devel] MMX version of 4x4 Forward Transform




              <[email protected]>
              Re: [Hdot264-devel] MMX version of 4x4 Forward Transform 

For those who are working on MMX transform, please pay attention to a (new) clarification in the latest draft.
Section 8.5.8 (where the transform is defined), first the vertical transform should be applied, then the horizontal.
enjoy
       


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