Hi Casper There is a bug in the modified version of the example. You compute "projections" twice, but the second time without specifying the angles. I.e., by default the 180 directions are used. You then try to reconstruct from that, but specifying the incorrect angles. Here's a pull request to raise a better message when this happens: https://github.com/scikits-image/scikits-image/pull/211 Stéfan On Mon, Jul 9, 2012 at 9:55 AM, casper <dima.osin@gmail.com> wrote:

Here is the code, that I took from the skimage gallery: