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    ".. [1] Wilhelm Burger, Mark Burge. Principles of Digital Image Processing:",
    "       Core Algorithms. Springer-Verlag, London, 2009.",
    ".. [2] B. Jähne. Digital Image Processing. Springer-Verlag,",
    "       Berlin-Heidelberg, 6. edition, 2005.",
    ".. [3] T. H. Reiss. Recognizing Planar Objects Using Invariant Image",
    "       Features, from Lecture notes in computer science, p. 676. Springer,",
    "       Berlin, 1993.",
    ".. [4] https://en.wikipedia.org/wiki/Image_moment"
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