Hello, I'm in contact with researchers in image processing and computer vision who have developed a C library for image processing. As they are also using Python, they may be interested in contributing some parts of their existing code to the scikit. I would like to know if it is compatible with the development policy of the scikit to include C code wrapped with cython in order to use numpy arrays (provided there is a significant speed benefit, and that good documentation and tests are provided, of course), or if pure Python/Cython is required. I know some of their stuff which is really cool, like top-notch denoising and segmentation, so I'm planning to give them a hand anyway in order to cythonize the code, but it would be even better if some of the work could be contributed to the scikit. So tell me about your opinion on C code in the scikit :-D. Cheers, Emmanuelle