Just wanted to mention an algorithm which I was very impressed by and which might be an awesome addition to scikit-image. The algorithm is called COSFIRE (Combination of Shifted Filter Responses).
I saw a talk by Geore Azzopardi, who presented the use of the algorithm for object and patter recognition. I was very impressed with the quality of segmentation of the shown examples, but also with the wide variety of image data (e.g. retina images, traffic signs, hand-written characters, and more).
The filter is inspired by how the brain processes visual information, and according to the author the algorithm is actually quite simple. The algorithm was the topic of his PhD and he's going to continue working on it in his new job.
The code (in Matlab) is available, so it might be worth a shot to try and port it to Python.
- PhD thesis: http://www.cs.rug.nl/~george/phd-thesis/ - Matlab code: nl.mathworks.com/matlabcentral/fileexchange/37395 - Paper in MIA: http://www.medicalimageanalysisjournal.com/article/S1361-8415%2814%2900136-4...