Example 1: A Simple Block

Image of a block Its Fourier Transform
Fourier for IDEAL LOW PASS CUTOFF = 50

Image for IDEAL LOW PASS CUTOFF = 50

Fourier for IDEAL HIGH PASS CUTOFF = 50

Image for above

Fourier for BUTTERWORTH LOW PASS CUTOFF = 40

Image for above

Fourier for BUTTERWORTH HIGH PASS CUTOFF = 40

Image for above
