On 10/28/2009 11:01 PM, Mike Williams wrote:
> It will not be possible to find graphics applications that
> would be able to manipulate the image as if it were greyscale.

What can you do in grayscale that you can't do in RGB?

Let's say that instead of 8 bits per channel, each channel instead only 
held 10 values, from 0 through 9. You could then represent the three 
channels as a decimal value between 0.000 and 0.999 with each channel 
corresponding to a decimal place.

If you had two "colors" (color is actually meaningless here), 0.345 and 
0.765, "blurring" them would result in the average, or 0.555, which is a 
valid result.

Granted, creating heightfields from a gradient would require more work 
than a simple grayscale image. But if your paint application supported 
working on channels independently, then you'd still only need to apply a 
different gradient to each channel.

Mike

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