> Hair, delicate clothes, tree branches and other fine objects will never be segmented perfectly, even because the ground truth segmentation does not contain th

> Hair, delicate clothes, tree branches and other fine objects will never be segmented perfectly, even because the ground truth segmentation does not contain these subtleties. The task of separating such delicate segmentation is called matting, and defines a different challenge. I did an internship where one of my tasks was to automatically remove the background in X-ray images, I spent basically half a year studying image processing, segmentation, reading papers, skimming image processing books etc... and never came across the word "matting", which was exactly what I was doing. Somebody should've told me that earlier, would've probably saved me a month.