add reference to Computer Vision Segmentation Slides

[kmader]

https://graphics.ethz.ch/teaching/viscomp17/notes.php

nice ROC curve examples and more detail about sensors

• https://graphics.ethz.ch/teaching/viscomp17/downloads/Lectures/VisComp02a_SegmentMorpho_annotated.pdf

training/validation + illumination correction + snakes

• https://graphics.ethz.ch/teaching/viscomp17/downloads/Lectures/VisComp02b_SegmentMorpho.pdf