Chris Huff wrote:
> 
> In article <3A9220F5.F5E3D687@kivisalo.net>, Kari Kivisalo
> <kar### [at] kivisalonet> wrote:
>
> > I plan to experiment with different post processing algorithms,
> > dynamic range compression etc., which take images with high dynamic
> > range and optimise them for monitor viewing. This requires the 48 bits.
> > The images should look more like photographs than CG. That's the short
> > version.
> 
> I don't think 48 bit output will do what you want...it doesn't affect
> the dynamic range of the image, just the number of levels in each color
> channel.

Dynamic range/contrast ratio is directly proportional to number of levels,
when talking about linear samples.

Think about audio analogy, 8bit samples have a dynamic range of 48 dB
and 16 bit samples have 96 dB. ( dB=20*log(max_sample/min_sample) )

I know what I'm doing. Trust me :) I also know what you mean but for
hands on quick testing I have to get the images to Matlab and Photoshop.


______________________________________________________________________
Kari Kivisalo                                  http://www.kivisalo.net

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