Mercurial > octave
view scripts/image/rgb2ind.m @ 904:3470f1e25a79
[project @ 1994-11-09 21:22:15 by jwe]
author | jwe |
---|---|
date | Wed, 09 Nov 1994 21:22:15 +0000 |
parents | 4e826edfbc56 |
children | b843a65fa977 |
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function [X map] = rgb2ind(R,G,B) # Convert and RGB image to an octave indexed image. # # [X map] = rgb2ind(R,G,B) # # SEE ALSO: ind2rgb, rgb2ntsc. # # Bugs: The color map may have duplicate entries. if(nargin != 3) usage ("[X, map] = rgb2ind(R,G,B)"); endif [hi wi] = size(R); X = zeros(hi,wi); map = zeros(hi*wi,3); pref = do_fortran_indexing; do_fortran_indexing = "true"; map(:,1) = R(:); map(:,2) = G(:); map(:,3) = B(:); X(:) = 1:(hi*wi); do_fortran_indexing = pref; endfunction