title: How to find Joint Histogram and Marginal Histogram in image processing and what is significance difference between them?
body: <p>I'm currently learning Computer Vision and Image processing, in the image processing part there is concept called Image Representations through histogram and further, it is classified into two that is Joint Histogram and Marginal Histogram. </p>
  
  <p>I don't understand how these Joint and Marginal Histograms work and what is significant difference between two? </p>