Image Processing Toolbox User's Guide

Viewing the Radon Transform as an Image

The Radon transform for a large number of angles is often displayed as an image. In this example, the Radon transform for the square image is computed at angles from 0° to 180°, in 1° increments.

• theta = 0:180;
  [R,xp] = radon(I,theta);
  imagesc(theta,xp,R);
  title('R_{\theta} (X\prime)');
  xlabel('\theta (degrees)');
  ylabel('X\prime');
  set(gca,'XTick',0:20:180);
  colormap(hot);
  colorbar
  
  
  

Radon Transform Using 180 Projections

Plotting the Radon Transform

Using the Radon Transform to Detect Lines

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