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
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Plotting the Radon Transform | Using the Radon Transform to Detect Lines |

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