K-nearest neighbors in segmentation of gray image

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Makrim
Makrim 2014-3-31
评论： Image Analyst 2022-3-20
Hi ,
I need help to implement k-nearest neighbors algorithm to segment a gray image.
I dispose of a Training image, and the original image to be segmented. But I don't have the knn algorithm to use it. KnnSearch corresponds to what I am looking to implement but I have Matlab r2009b thus it is not implemented.
please do you have the knn matlab code for 2 dimensionnal images ?

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回答（1 个）

Image Analyst
Image Analyst 2014-3-31
Do you mean like a knn filter for denoising where you replace a pixel by the mean of the brightest or darkest N values? If so, you can do that all with a few calls imfilter() or conv2() if you're clever about it.
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Mohammed Abdul Wadood
Mohammed Abdul Wadood 2022-3-20
I asking you @Image Analyst, Sorry, I didn't notice the term (knnsearch).
I working on denoising satellite image with gaussian noise. So, I asket about KNN filter.
thank you

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