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Truncate Sinogram across Central Detector Bin

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Truncate Sinogram across Central Detector Bin

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  1. I = phantom(512);
  2. theta = -90: 1: 90;
  3. P = radon(I, theta);
  4. Sino = P';     
  5. Sino2 = truncSino(Sino, 0.3, 'ramp');
  6. Sino3 = truncSino(Sino, 0.3);
  7. m = 0; n = 150;
  8. figure, 
  9. subplot(3, 1, 1), imshow(Sino, [m, n]); 
  10. title('Original sinogram', 'FontSize', 15); ylabel('View#', 'FontSize', 12); xlabel('Detector Bin#', 'FontSize', 12);
  11.  
  12. subplot(3, 1, 2), imshow(Sino2, [m, n]); 
  13. title('Truncated sinogram with extrapolation by ramp function', 'FontSize', 15); 
  14. ylabel('View#', 'FontSize', 12); xlabel('Detector Bin#', 'FontSize', 12);
  15.  
  16. subplot(3, 1, 3), imshow(Sino3, [m, n]); 
  17. title('Truncated sinogram', 'FontSize', 15)
  18. xlabel('Detector Bin#');
  19. ylabel('View#', 'FontSize', 12); xlabel('Detector Bin#', 'FontSize', 12);

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