||In this presentation, I will summarise the research I have performed during the 25 years I have been active in the field of image analysis, pattern recognition, and medical visulaisation. Is that even possible in a 30-minute seminar? I will try and have selected one illustration per year to do this. My intention is to explain how my early days in method development gave me the suffient and necessary background to be involved in a number of exciting - mainly biomedical - collaborations. I will present 3D skeletons and convex hulls. In addition, I will illustrate different interactive segmentations and visualisation methods. Examples of applications are analysis of virus particles (such as, HIV), blood vessels, and liver cancer, as well as planning of cranio-maxillofacial surgery.