- http://scikit-image.org/docs/dev/user_guide/tutorial_segmentation.html
- https://www.scipy-lectures.org/packages/scikit-image/index.html
- http://scikit-image.org/docs/dev/auto_examples/
- https://web.stanford.edu/class/ee368/Handouts/Lectures/2014_Spring/Combined_Slides/6-Image-Segmentation-Combined.pdf
- https://courses.csail.mit.edu/6.869/lectnotes/lect19/lect19-slides-6up.pdf
- http://cmm.ensmp.fr/~beucher/publi/WTS_residues.pdf
- http://cmm.ensmp.fr/~beucher/wtshed.html
- https://sandipanweb.wordpress.com/2018/02/25/graph-based-image-segmentation-in-python/
- https://sandipanweb.wordpress.com/2018/02/11/interactive-image-segmentation-with-graph-cut/
- http://people.cs.uchicago.edu/~pff/papers/seg-ijcv.pdf
- http://www.kev-smith.com/papers/SMITH_TPAMI12.pdf