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March 2006
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2006.03.31 16:34 "Re: 16-bit TIFF to 8-bit BMP/TIF ???", by Bob Friesenhahn
On Fri, 31 Mar 2006, Pallek, Bernie: #CIPO - OPIC wrote: > > Yes, and this built in support does not apply the desired square root > > so probably all that you would get is a blown-out or all-black image. > > :-) > > Hmm... might be cool to write a user-defineable function that gets > called on each pixel to do some kind of modification. Yeah, it's > expensive to make a call for each pixel, and yes, one would have to > consider the different formats -- function for each? or must the > function be "smart" and behave differently according to the current > format? etc -- but if it could done cleanly, it would probably be > pretty handy. *shrug* Yes, but from my understanding, the requested operation is the same as applying a gamma correction of 2.0 such as would be used to convert from 'linear light' space to a gamma corrected space. This sort of operation is already available in many image processing packages which support TIFF. Bob ====================================== Bob Friesenhahn bfriesen@simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer, http://www.GraphicsMagick.org/