What is the relation of the frequencies to a circle of radius D0, where D0 is the cutoff distance measured from origin of frequency rectangle, for an Ideal Highpass filter?
(a) IHPF sets all frequencies inside circle to zero
(b) IHPF allows all frequencies, without attenuating, outside the circle
(c) All of the mentioned
(d) None of the mentioned
The question was asked during an online exam.
Question is taken from Gaussain Lowpass and Sharpening Frequency Domain Filters topic in section Filtering in Frequency Domain of Digital Image Processing