Multicolor representation

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DAD 2011-11-20

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I had a image with values full of 1 ,2, 3 and 4 ...........I want to represent the value 1 pixels as red color and value 2 pixels as blue color ........Like this i want to differentiate the remaining.............What can i do?,.................Please help me as soon as possible

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Walter Roberson 2012-5-27

http://www.mathworks.com/matlabcentral/answers/29922-why-your-question-is-not-urgent-or-an-emergency

Walter Roberson 2012-5-27

Have you considered rgb2ind() ?

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Jan 2011-11-20

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Does the command ind2rgb help?

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DAD 2011-11-20

Nice answer

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Image Analyst 2011-11-20

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在 MATLAB Online 中打开

You mean like this:

% Generate some sample data in the range 1-4.
m = randi(4, [50 50]);
% Display the image.
imshow(m, []);
% Set up a colormap.
cmap = [1 0 0; ... % 1 = Red
  0 0 1; ... % 2 = Blue
  0 1 0; ... % 3 = Green
  1 1 0]; % 4 = Yellow.
% Apply the colormap.
colormap(cmap);
colorbar();
% Enlarge figure to full screen.
set(gca, 'units','normalized','outerposition',[0 0 .9 .9]);
set(gcf, 'units','normalized','outerposition',[0 0 1 1]);
set(gcf,'name','Demo by ImageAnalyst','numbertitle','off')