Thomas Walter received the Diploma degree in electrical engineering from Saarland University, Germany, and the Ph.D. degree in mathematical morphology from Mines ParisTech, France. He held a post-doctoral position with the European Molecular Biology Laboratory, Heidelberg, Germany. He is currently a Team Leader in bioimage informatics with the Centre for Computational Biology, Mines ParisTech, and a member of the Bioinformatics Unit with the Curie Institute, Paris. His most visible scientific contributions have been in the field of bioimage informatics, and in particular, in high content screening. He has pioneered methods in the field of cellular phenotyping and phenotypic clustering from live cell-imaging data. He was involved in the first genome-wide screen by live cell imaging in a human cell line, and co-develops the open-source software cellcognition.