Removes high spatial frequencies (blurring the
image) and low spatial frequencies (similar to
subtracting a blurred image)
It can also suppress
horizontal or vertical stripes that were
created by scanning an image line by line
The Bandpass Filter uses a special algorithm to
reduce edge artifacts (before the Fourier transform,
the image is extended in size by attaching
mirrored copies of image parts outside the original
image, thus no jumps occur at the edges).
a special algorithm to
reduce edge artifacts