Removing unwanted components in a binary image?
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Heloo... am working on pothole images. Below is the binary image of pothole attached and i wanted to remove the unwanted components sorrounding the pothole and i want only the pothole image as the output without any unwanted areas, could anyone help me?
thanks in advance...:)![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/271921/image.jpeg)
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/271921/image.jpeg)
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KALYAN ACHARJYA
el 16 de Feb. de 2020
Editada: KALYAN ACHARJYA
el 16 de Feb. de 2020
BW=bwareafilt(bw_im,1);
result=bw_im-BW;
imshow(result);
If you are more interested to control the small area objects use this function
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/271927/image.png)
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KALYAN ACHARJYA
el 17 de Feb. de 2020
Apply imclose on the resultant binary image with proper structuring element objects
Image Analyst
el 16 de Feb. de 2020
You need to define what you want. For example, do you want just the largest blob with bwareafilt(bw, 1)? Or blobs larger than a certain area with bwareaopen(bw, someArea)? Do you want to fill holes with imfill(bw, 'holes')? Also you should make sure your initial segmentation gives the pothole(s) as white, not black, since binary operations are done on true/white/1 valued pixels, not false/black/0 valued objects.
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