Google Summer of Code: patent-free Face Detection for Scikit-image in Python
http://warmspringwinds.github.io/gsoc/face_detection/scikit_image/2015/05/22/google-summer-of-code-patent-free-face-detection-for-scikit-image-in-python.-introduction/
http://warmspringwinds.github.io/gsoc/face_detection/scikit_image/2015/05/22/google-summer-of-code-patent-free-face-detection-for-scikit-image-in-python.-introduction/