0520MCA285122101

Module 111
Find the DCT of the sequence x[n] = (11, 22, 33, 44} using DCT matrix for
N=4.
OR

Explain the working of Homomorphic filtering for image sharpening in
frequency domain with a block diagram.

Module 1५
Describe the need of Wiener filtering in image restoration

Explain the techniques behind digital image watermarking.

Module ९
Briefly explain the principle and operation of a Canny edge detector.
OR
Compare the region growing, spitting and merging methods employed in image
segmentation.

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പത്ത്‌ = == 3 8

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