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quick matrix algebra question [message #46860]

Mon, 09 January 2006 11:36

b_gom
Messages: 105
Registered: April 2003

Senior Member

I'm sure someone must have a quick solution for this problem. I have a
color transformation that I want to apply to an RGB pixel as follows:

M=fltarr(3,3)
RGB=bytarr(3)
;fill RGB and M with some values
result = transpose(M ## RGB) ;apply the transform.

Now, result contains the new values in the same format as RGB.
The question is: how do I do this efficiently on an RGB image (ie a
(3,col,row) array)? Quick, before I use a for loop!

Thanks

Brad

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