template matching - ValueError: image must be 2d / 3d array

[Anurag]

Hello,
I am trying to run Template Matching code as mentioned in
http://scikit-image.org/docs/dev/auto_examples/plot_template.html, however,
on trying to read an image from file, it returns the following error:
ValueError: The parameter `image` must be a 2-or-3-dimensional array

full gist and Traceback at:
https://gist.github.com/anuragphadke/48b8565a6bcaa477daa5

Any tips on what I might be doing wrong here? tried converting image to
grayscale etc.


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Twitter: @anuragphadke (https://twitter.com/#!/anuragphadke)
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