![]() However, with im2col, it only grabs pixel neighbourhoods that are within the bounds of the original image. ![]() You can use col2im to help facilitate this last step. Once you're done, simply reshape this vector back into the same size as the original image to get your median filtered result. ![]() This will be a single row vector that represents the median value of each pixel neighbourhood. Next, use sort and sort along the rows for each column, then grab the middle of this sorted matrix which represents the middle value for each pixel neighbourhood. Each column would represent pixel intensities within a pixel neighbourhood. ![]() One suggestion I can make is to use im2col to transform each pixel neighbourhood into a single column vector and take all of these column vectors to create a single matrix. The basic premise behind median filtering is to analyze pixel neighbourhoods in your image, sort their intensities, then choose the middle intensity as the result. NB: This assumes that the Image Processing Toolbox is installed. ![]()
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