Thanks! This works perfectly on my system. Can you share the output of:import skimageprint(skimage.__version__)import numpyprint(numpy.__version__)import scipyprint(scipy.__version__)Thanks!StéfanOn Wed, Aug 2, 2017, at 15:20, Riley Myers wrote:Ok - I've attached the code, and the images necessary to run it, in a tarball. The images (and the code) are taken from the skimage-tutorials available on github at https://github.com/scikit-image/skimage-tutorials - specifically lectures/adv3_panorama-stitching.ipynb .Thanks!Riley