This is a Classroom License for instructional use only.
	Research and commercial use is prohibited.

diary tomo1

	Academic License

doc radon
I = zeros(100,100);
I(25:75, 25:75) = 1;
imagesc(I)
theta = 0:180;
[R,xp] = radon(I,theta);
imshow(R,[],'Xdata',theta,'Ydata',xp,...
            'InitialMagnification','fit')
I = zeros(100,100);
I(25, 25) = 1;
imagesc(I)
[R,xp] = radon(I,theta);
imshow(R,[],'Xdata',theta,'Ydata',xp,...
imshow(R,[],'Xdata',theta,'Ydata',xp,...
            'InitialMagnification','fit')
P = phantom(128); 
imagesc(P)
R = radon(P,0:179);
I1 = iradon(R,0:179);
I2 = iradon(R,0:179,'linear','none');
subplot(1,3,1), imshow(P), title('Original')
subplot(1,3,2), imshow(I1), title('Filtered backprojection')
subplot(1,3,3), imshow(I2,[]), title('Unfiltered backprojection')
imshow(R,[],'Xdata',theta,'Ydata',xp,...

 
 
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