In Delft he heads the Medical Visualisation group, where his research focuses on surgical planning and guidance, and visual analysis for medical research. He was one of the initiators of the Eurographics Workshop series on Visual Computing for Biology and Medicine and acted as co-chair in 2008 and 2010. Dr Botha holds an M.Sc. in electronic engineering (1999, University of Stellenbosch) and a Ph.D. in computer science (2005, Delft University of Technology). Between M.Sc. and Ph.D. he worked in industry developing embedded image processing products.