Re: Subtracting G channel from R and B may increase lossless compression?
- From: Thomas Richter <thor@xxxxxxxxxxxxxxxxx>
- Date: Wed, 23 May 2007 17:40:45 +0200
LiloLilo wrote:
Hi all,
anybody knows how subtracting G channel from R and from B could increase lossless compression?
Because it is a simple decorrelation transformation. I would recommend a
more efficient, though, look for the JPEG2000 ICT "multi-component transformation".
Do you think that subtracting for example the R channel or the B channel instead of G would be different?
Probably. The normal spectral density of our world has "typically" a maximum in the green/yellow area (this is also why plants are green - most efficient part of the spectrum), and thus a good degree of energy ends up in the green channel.
So long,
Thomas
.
- Follow-Ups:
- References:
- Prev by Date: Re: Subtracting G channel from R and B may increase lossless compression?
- Next by Date: Re: Subtracting G channel from R and B may increase lossless compression?
- Previous by thread: Re: Subtracting G channel from R and B may increase lossless compression?
- Next by thread: Re: Subtracting G channel from R and B may increase lossless compression?
- Index(es):
Relevant Pages
|
