Dear colleague
I evaluate MTF in Matlab through Edge Spread Function and Point Spread Function for computed tomography scanner but there is a question and I would be grateful if you guided me through this.
How could I convert the x axis from distance (mm) to spatial frequency (1/mm)?
Best Regards
Faeze
Gabor Kurdi
If your x axis has Nx points with a separation of dx=abs(x(2)-x(1));
then L=Nx*dx; %in mm
gives a base spatial frequency:
dfx=1/L; % in 1/mm
your spatial frequency array should be like:
linspace(-(Nx/2)*dfx,(Nx/2)*dfx,Nx);
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