Repeat snake processing (loop) on the same image in order to detect several features

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Rdmato33
Rdmato33 2015 年 7 月 13 日
コメント済み: Ashish Uthama 2015 年 7 月 15 日

Hello,

I have tested the snake (active contour) algorithm from Chenyang Xu and Jerry L. Prince (<http://www.iacl.ece.jhu.edu/static/gvf/>) in order to extract feature border. It works very well.

However, I did it only on a single sample extracted from a bigger image which contains hundred features (as you can see below).

How can I repeat this process automatically to the whole image and thus, obtain the contour of every feature? For information, I already have the center coordinates for all features.

Thanks, Rémi

回答 (1 件)

Ashish Uthama
Ashish Uthama 2015 年 7 月 13 日
If you have a newer version, give the imageSegmenter app a go (it uses active contours).
I used part of your image with some simple preprocessing
imcomplement(rgb2gray(cropped image))
To get:
  2 件のコメント
Ashish Uthama
Ashish Uthama 2015 年 7 月 15 日
Do note - I just used some defaults. I was not certain I understood what features you were looking to isolate, the point was just to show you that this app might help you get started in the right direction.
I can imagine doing some simple morphological post-processing to isolate the roundish structures.

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