How do I run the version of GrowCut in FileExchange in Matlab 2012a?

I want to run this image segmentation program.

http://www.mathworks.in/matlabcentral/fileexchange/19091-growcut-image-segmentation

When attempting to run growcut_test I get the following error:

>> growcut_test
Subscript indices must either be real positive integers or logicals.

Error in growcut_test (line 7)
subplot(2,2,1), imshow(img);

This is line 7 and what is around it:

%-- Load image and seeds
img = imread('lotus.png');
labels = double(imread('labels.png'))-1;

subplot(2,2,1), imshow(img);
subplot(2,2,2), imshow(labels,[]);
subplot(2,2,3), imshow(img);

Any ideas?

Answer 1

[Walter Roberson]

You appear to have a variable named "imshow" that is interfering with use of the Image Processing Toolbox routine imshow()