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Which of the following techniques is based on the Fourier transform?(a) Structural(b) Spectral(c) Statistical(d) TopologicalThis question was addressed to me in class test.This key question is from Regional Descriptors topic in division Representation and Description of Digital Image Processing

Answer»

Correct choice is (b) SPECTRAL

The explanation is: Spectral techniques are based on properties of the Fourier spectrum and are used primarily to detect global PERIODICITY in an image by identifying HIGH ENERGY, narrow PEAKS in the image.



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