Remove noise from an image
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Hi everybody, I am a student and I am at the beginning in a course of Machine Vision. It is one week that I try to solve this problem but without success so maybe someone can help me. I have to remove the noise and improve the quality of this image http://www.filedropper.com/image_5
Can you explain me how it is possible a show some code?
Thanks
Ale
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Antworten (3)
Sean de Wolski
am 12 Mai 2011
I2 = bwareaopen(I,3);
2 Kommentare
Sean de Wolski
am 12 Mai 2011
It was a shot in the dark. I didn't download your image (I don't trust the site). I also don't want to do your homework for you. If you posted your image to a site that's trustworthy (i.e. no download; e.g. www.uploadhouse.com) and showed us, in code, what you've tried so far, we'll be able to give you non-useless answers.
Sean de Wolski
am 12 Mai 2011
X = imread(your_image);
Q = uint8(imclearborder(imfill(conv2(double(X(:,:,1)),ones(3),'same')<1400,'holes'))).*X(:,:,1); %quarters
imtool(Q)
2 Kommentare
Sean de Wolski
am 12 Mai 2011
That was the point. I have you six things to look into that you may find useful: convolution, hole filling, extraction of one slice, threshold, border clearing, map application. You can play with the parameters and or look at other functions such as imdilate, imerode, bwdist...
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