how to remove the tiny white pixels around the rectangles

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How can i remove the tiny pixels around the rectangles in the image attached. attached images.

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Kevin Holly
Kevin Holly am 29 Sep. 2022
Img = imread('originalImage.png');
You can also filter based on area of objects
Img = bwareafilt(imbinarize(Img),4,'largest'); % keep the 4 largest objects
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Pravindkumaran Baskaran
Pravindkumaran Baskaran am 29 Sep. 2022
i got till the second image but i'm trying to get those dots around the boxes away

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Matt J
Matt J am 29 Sep. 2022
Bearbeitet: Matt J am 29 Sep. 2022

Image Analyst
Image Analyst am 29 Sep. 2022
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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