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how to remove the noise applied to particular part of color image

Asked by KAS on 7 Jul 2013

i have read an image into some variable for ex; 'r' ,next applied the noise to r(i,j) where i and j is the position of the noise applied.now i want to remove the noise but applying the denoising method only at the region.how to do it explain it with an example.

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KAS

1 Answer

Answer by Image Analyst on 7 Jul 2013
Edited by Image Analyst on 7 Jul 2013

First bet a binary image that says where the noise is, for example by just specifying the rows and columns, or using imfreehand() and poly2mask(), or stdfilt() and thresholding, or whatever gives you the noise pixels. Then just do:

% Set back to original noise-free values.
noisyImage(binaryImage) = originalImage(binaryImage); 

Repeat for each color channel.

1 Comment

ARUN SAI on 7 Jul 2013

explain with example

Image Analyst

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