MATLAB: How can i calculate and display the particular range of pixels in the image

digital image processing

My main task is to highlight the particular pixel value by changing the color of that pixel. For example; we have a color image. I want to highlight a particular color in the image with the help of range of pixels.Can i have a code for this please.

Best Answer

Set up a colormap and apply it. For example (untested)
grayImage = imread('cameraman.tif');
imshow(grayImage);
cmap = gray(256);
% Make gray levels 150 - 170 red
cmap(151:191, 1) = 1;
cmap(151:191, 2) = 0;
cmap(151:191, 3) = 0;
colormap(gca, cmap);
colorbar;
hp = impixelinfo();
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