Several tasks can be performed (semi)-automatically to support the eye-brain
system of medical practitioners. Smoothing (Section 5.1) is the problem of simplifying
the image while retaining important information. Registration (Section 5.2) is
the problem of fusing images of the same region acquired from different modalities
or putting in correspondence images of one patient at different times or of different
patients. Finally, segmentation (Section 5.3) is the problem of isolating anatomical
structures for quantitative shape analysis or visualization. The ideal clinical application
should be fast, robust with regards to image imperfections, simple to use,
and as automatic as possible. The ultimate goal of artificial vision is to imitate
human vision, which is intrinsically subjective.