title: Indicating a matrix element of an image by a color
body: <p>I am trying to attach a color code to a specific element of a matrix. But unable to do so. Specifying the color should surface in the new image.</p>
  
  <pre><code>I=imread('1.tif')
  J=rgb2gray(I)
  M=imresize(J,[156 156])
  H=imread(M,M(120,134),'red')
  </code></pre>
  
  <p>Kindly help. Thanks in advance.</p>