MATLAB: Detecting the epicardium of LGE images

Image Processing Toolboximage segmentation

Hello everyone! Wish you all a good day!

Could you please tell me how to automatically find the epicardium on the LGE images?

Here is the image:

And this is what I want:

'imfindcircles' doesn't work on this kind of images.

Best regards

Best Answer

Neil:

Here's something to get you started. It's attached below the image as test.m. Of course it works just for this image and may not work for any possible image that you'll ever encounter. This is where you need to improve the algorithm and where all the time comes in. I just spent 5 minutes on this code but you could spend years on making it robust and general.

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MATLAB: Detect Epicardium and Endocardium using imfindcircles

Found the solution, I just had to tune Sensitivity of the imfindcircles function. I set the value to 0.98 to get the region.

if true
  a=imread('MRI_Cardiac.jpg');
[l c]=otsu(a,2)
[centers,radii] = imfindcircles(l,[38 40], 'Sensitivity',0.98, 'ObjectPolarity','bright')
imshow(l)
h = viscircles(centers,radii);
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MATLAB: How to search a given radius circle by hough transform

Hi,

The MATLAB function 'imfindcircles' finds circles (using circular Hough transform) in an image whose radii are approximately equal to the specified radius.

http://in.mathworks.com/help/images/ref/imfindcircles.html

Best Answer

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MATLAB: Detect Epicardium and Endocardium using imfindcircles

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