Segment nodes in an image

1 次查看（过去 30 天）
hu
hu 2013-10-19
评论： Image Analyst 2013-10-22
Hi,
I am new in image processing and I am trying to learn it by myself using Matlab.
I have a question based on an image I found and attached:
-How can I segment the left image that each node (I am not sure I use the correct terminology) will get different color and number (right image), is it also possible get other information like area in pixels?
Thanks a lot

请先登录，再回答此问题。

回答（2 个）

Image Analyst
Image Analyst 2013-10-19
You can skeletonize the image
bwSkel = bwmorph(binaryImage, 'skel', inf);
then find the branchpoints:
bp = bwmorph(bwSkel, 'branchpoints');
then remove them
binaryImage = bwSkel & ~bp;
then label
labeledImage = bwlabel(binaryImage);
That's just off the top of my head - I have not tested it.
  2 个评论
hu
hu 2013-10-22
Unfortunately it does not work
Image Analyst
Image Analyst 2013-10-22
OK, well, keep working at it because the algorithm should work but might need a tweak or two.

请先登录，再进行评论。

Yannick
Yannick 2013-10-19
See if this example helps: Measuring Angle of Intersection
Basically, it takes an image in which we want to measure the angle between two straight objects, identifies these objects, then finds the intersection point and the angle between them. Maybe you can use these ideas to find the intersection points / nodes and detect the branches in your image.
And this may help to find areas in pixels: BWAREA.

类别

在 Help Center 和 File Exchange 中查找有关 Image Segmentation 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by