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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.

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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.

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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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