plotting 2 points

11 次查看（过去 30 天）
Aaditya
Aaditya 2012-1-27
编辑： Image Analyst 2013-10-2
hey all !!! Can anyone please tell me the ways to plot points on the edge/boundary of an object from a segmented image.
i need to do further process with the result.

请先登录，再回答此问题。

回答（1 个）

David Young
David Young 2012-1-27
If you have the Image Processing Toolbox, have a look at the edge() function. The associated demos will give you examples that you can adapt to your problem.
  4 个评论
显示 2更早的评论
Aaditya
Aaditya 2012-2-7
My job is to plot points across the edges of the image and join pair of points to form chords. then some features of the chord( length, orientation and normalized normals) are binned to a k- dimensional histogram( chordiogram).
David Young
David Young 2012-2-7
Plotting is a graphical operation, but making measurements of chords is not. It's hard to understand what your goal is.
All the same, the output of the edge function would still seem a good place to start. What is wrong with it? Have you looked at the demos?
Here's a simple example of plotting the edge points, to get you started:
>> imshow(im);
>> e = edge(im, 'canny');
>> [y, x] = find(e);
>> imshow(im);
>> hold on; plot(x, y, '.'); hold off;

请先登录，再进行评论。

类别

在 Help Center 和 File Exchange 中查找有关 Object Analysis 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