how can do process on some objects in an image?

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jack nn 2015-7-16

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https://ww2.mathworks.cn/matlabcentral/answers/230039-how-can-do-process-on-some-objects-in-an-image

关闭： MATLAB Answer Bot 2021-8-20

hi everybody I have a homework that I could not solve this.I hope you can help me. I have a binary image that includes some objects. I want to do some process on these object distinc..I thought maybe regionprobs can help me...Is there any idea? for example if this is my image I want to do my process(for example imdilate) on just 3 blob of this objects.

this Image is from result of this link: http://www.mathworks.com/matlabcentral/fileexchange/25157-image-segmentation-tutorial

thanks

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jack nn 2015-7-16

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I searched and I know this:

if true
 [labeledImage, numberOfBlobs] = bwlabel(binaryImage);
end

but when I want to see for example first blob and I used this code:

if true
figure,imshow(labeledImage(1));
end

I couldn't see the first blob :(

jack nn 2015-7-16

在 MATLAB Online 中打开

thanks dear I found the answer.

this is the answer:

if true
  [labeledImage, ~] = bwlabel(binaryImage);
blobMeasurements = regionprops(labeledImage,'all');
numberOfBlobs = size(blobMeasurements, 1);
 for i=1: numberOfBlobs
thisBlobsPixels = blobMeasurements(i).PixelIdxList;
m=zeros(512);
m(thisBlobsPixels)=1;
  end