[theora-dev] What's in a name?

[Dan Miller]

quote from the person directly responsible:

"It is sort of like a mini-hilbert traversal on a super block row."

So apparently Hilbert was involved.

He also said the pattern reminded him of Space Invaders.

<p>> -----Original Message-----
> From: Mike Melanson [mailto:melanson at pcisys.net]
> Sent: Friday, February 28, 2003 2:35 PM
> To: theora-dev at xiph.org
> Subject: RE: [theora-dev] What's in a name?
> 
> 
> On Fri, 28 Feb 2003, Dan Miller wrote:
> 
> > This is important because it maximizes correlation between 
> samples when constrained to a single predictor (ie linear 
> delta coding).  I believe this is the pattern we use to 
> predict DC coeffs in a 'superblock' (32 x 32 block with 16 
> 8x8 blocks within), no?
> 
> 	I'm not sure if I follow you here. From my analysis, that is the
> pattern used to code DCT coefficients. First, all of the DC coeffs are
> decoded according to that pattern. Then all of the 1st AC 
> coeffs, 2nd AC
> coeffs, etc. 
> 
> 	I don't see the pattern as having anything to do with DC
> prediction. After all of the coeffs are unpacked and arranged 
> in rows of
> fragments, the DC prediction is reversed.
> 
> --
> 	-Mike Melanson
> 
> 
> 
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