how to connect the label region?how regionprops work?

Question

Tan Wen Kun 2015-11-5

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/253054-how-to-connect-the-label-region-how-regionprops-work

回答： Walter Roberson 2015-11-6

a = imread('apple.jpg');
b = rgb2gray(a);
BW = edge(b,'canny');
L = bwlabel(BW);
s = regionprops(BW,'centroid');
centroids = cat(1, s.Centroid);
imshow(BW)
hold on
plot(centroids(:,1),centroids(:,2), 'b*')
hold off

The image is just a red apple with white background.

What I want to do is to segment the apple

I want to connect label region together to form the apple again.

How to do it?

What does the regionprops doing?

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Answer 1

Walter Roberson 2015-11-6

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/253054-how-to-connect-the-label-region-how-regionprops-work#answer_198678

http://www.mathworks.com/help/images/ref/label2rgb.html

The regionprops is just taking in the label matrix and calculating the centroids of each region. That does not have any apparent connection to connecting the label regions together to form the apple again.