Light is scattered all the time in the world around us. In order to
identify the shape of objects the most relevant scattering events are
reflections at object surfaces. In a number of scenarios those direct
reflections will be mixed with other global illumination effects such
as interreflections, subsurface scattering, or they are hardly visible
due to a low albedo surface. In the talk, I will present a set of
recent techniques for removing the disturbing effects introduced by
multiple scattering. We exploit high frequency illumination,
polarization filtering or fluorescent liquids. The developed systems
allow for clear vision in murky water or for 3D range scanning
independent of the material type, e.g. even for translucent or
transparent objects.