Adaptive unsharp masking a powerful method of sharpening, Ask an Expert

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(Adaptive unsharp masking) A powerful method of sharpening images in the presence of low levels of noise (such as film grain noise) is via the following algorithm [15] . The high-pass filter

which can be used for unsharp masking, can be written as ft times the sum of the following eight directional masks (H0):

The input image is filtered by each of these masks and the outputs that exceed a threshold are summed and mixed with the input image (see Fig. P7.5). Perform this algorithm on a scanned photograph and compare with nonadaptive unsharp masking.

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Computer Engineering, Engineering

Category:- Computer Engineering
Reference No.:- M92080329

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