how to count big cell only?

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Moon Shadow
Moon Shadow 2014-3-10
回答： Image Analyst 2014-3-25
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');
level=graythresh(A);
I=im2bw(A,level);
[labeled,numObjects]=bwlabel(I,4)
numObjects = 26

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Dishant Arora
Dishant Arora 2014-3-10
编辑：Dishant Arora 2014-3-10
use bwareaopen to remove objects smaller than certain number of pixels.
BW2 = bwareaopen(BW, thresh);
[~, numObjects] = bwlabel(BW2,4);
  2 个评论
Moon Shadow
Moon Shadow 2014-3-21
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
Dishant Arora
Dishant Arora 2014-3-25
Check out for 8-connectivity when using bwlabel or attach your image.

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更多回答（1 个）

Image Analyst
Image Analyst 2014-3-25
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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