Get an image from a fgure window

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divya r
divya r on 22 Apr 2014
Commented: divya r on 23 Apr 2014
Hi
I have an image which has a lot of circles. So I have used imfindcirles and viscircles to find and visualize the circles in a figure window. Now I want to get the image as it is and store it in a variable in the program.
I tried using getimage, but it gets only the original image, without the circles marked in it.

Accepted Answer

Image Analyst
Image Analyst on 22 Apr 2014
Did you try to get cdata?
theFrame = get(gca, 'CData');
If that doesn't work, use export_fig.
  2 Comments
Image Analyst
Image Analyst on 23 Apr 2014
divya's "Answer" moved here:
I am getting an error when I am using cdata. I have attached the code below:
data = imread('coins.png');
figure();
imshow(data);
[centers radii] = imfindcircles(data,[3 10], 'Sensitivity', 0.92,'Edge', 0.03);
theFrame = get(gca, 'CData');
figure();
imshow(theFrame);
The error is :
Error using hg.axes/get
The name 'CData' is not an accessible property for an instance of class 'axes'.
I tried using copyfig from export_fig directory, but it didnt work either.
divya r
divya r on 23 Apr 2014
Export_fig worked. Many thanks.

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