how to remove the tiny white pixels around the rectangles

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Pravindkumaran Baskaran
回答： Image Analyst 2022-9-29
How can i remove the tiny pixels around the rectangles in the image attached. attached images.

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采纳的回答

Kevin Holly
Kevin Holly 2022-9-29
Ran in:
Img = imread('originalImage.png');
imshow(Img)
You can also filter based on area of objects
Img = bwareafilt(imbinarize(Img),4,'largest'); % keep the 4 largest objects
imshow(Img)

更多回答（2 个）

Matt J
Matt J 2022-9-29
编辑：Matt J 2022-9-29
imopen(yourImage,ones(3))
Image Analyst
Image Analyst 2022-9-29
Depends on exactly what that means.
  1. Do you want to simply remove small blobs?
  2. Or do you also want to remove a small protrusion that is sticking out of the side of a much larger rectangle.
For case 1 you can use bwareaopen or bwareafilt
For case 2 you might try imopen, though be careful for changes to the shape you don't want, especially near the corners or protruding blobs.

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