MATLAB Answers


how to count big cell only?

Asked by Moon Shadow on 10 Mar 2014
Latest activity Answered by Image Analyst
on 25 Mar 2014

I have image with different cell size but I want Count the number of big cells only!!

I try this code:

A = imread ('cell.png');
numObjects = 26


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2 Answers

Answer by Dishant Arora on 10 Mar 2014
Edited by Dishant Arora on 10 Mar 2014
 Accepted Answer

use bwareaopen to remove objects smaller than certain number of pixels.

 BW2 = bwareaopen(BW, thresh);
[~, numObjects] = bwlabel(BW2,4);


It did nit worked with me!!

It calculate small and big cells.

I = imread('cell.png'); EDU>> imshow(I); EDU>> bw = im2bw(I); EDU>> figure,imshow(bw);

EDU>> BW2 = bwareaopen(bw, 1000); EDU>> figure,imshow(BW2); [labeled,numObjects]=bwlabel(BW2,4) numObjects = 10

Check out for 8-connectivity when using bwlabel or attach your image.

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Answer by Image Analyst
on 25 Mar 2014

See my code to extract the largest blob, attached below in blue. In there, there is a general purpose function I wrote that can take the N largest or smallest blobs in a binary image.


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