title: How to implement SIFT (Scale-invariant feature transform) for 3D image in Python?
body: <p>I saw many examples of SIFT for 2-dimensional image only: <a href="http://docs.opencv.org/3.1.0/da/df5/tutorial_py_sift_intro.html" rel="noreferrer">http://docs.opencv.org/3.1.0/da/df5/tutorial_py_sift_intro.html</a>. But in Wikipedia there is written that SIFT may be applied for "3D modelling" as well. Please help me to find examples for 3-dimensional image in Python, or provide me the ones of your own. I need to find locations of Amino Acids within given protein (creo EM scan), and I want to compare precision of SIFT compared to other heuristics calculations.</p>