**Inverse problems** are about going from effect to cause. My point of view to inverse problems is a mathematical and computational one. Given measurement data about an unknown object of interest, I want to design a computer algorithm that takes the data as input and produces, for example, an image of the unknown object.

I work as a professor of industrial mathematics at University of Helsinki, Finland. The applications of inverse problems most interesting to me are medical imaging, human speech signal analysis, digital image processing and seismic imaging. For more information about my research, see my research homepage.

This website shows a few of my favorite examples of inverse problems.

*Many thanks to Toni Karvonen for his technical help in building this site.*