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Image Masking Technique

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It helps in edge detection, Image smoothening depending upon the masking matrices used.

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A HPF Mask is used to detect the edges in a given image.Example of one such HPF mask of order 3*3 is

[0 -1 0;-1 4 -1;0 -1 0].

This resultant image of edges is added to the original image so as to produce a sharp image.

Also LPF mask matrices can be used to produce smooth images.

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Franky Dsouza

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MATLAB 7.6 (R2008a)

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