Scientists in Israel have found a novel way to get images through “scattering” materials such as frosted glass or even skin, or even “see around corners”.
Much research in recent years has focused on correcting for scattering, mostly for medical applications.
But the new trick, reported in Nature Photonics, is quick, simple and uses natural light rather than lasers.
It uses what is called a spatial light modulator to “undo” the scattering that makes objects opaque or non-reflecting.
A camera that can “see around corners” garnered much attention in 2010, using a series of timed laser pulses to illuminate a scene and working out what is around a corner from the timing of the reflections.
The prototype device was just one of a great many research efforts trying to crack the problem of scattering.
But for some applications, the “time-of-flight” approach that the laser-based camera uses is not sufficient.
“If you want to look to see an embryo developing inside an egg but the eggshell scatters everything, or you want to look through the skin, scattering is the main enemy there, and time-of-flight is not a good solution,” explained senior author of the study Yaron Silberberg, Weizmann Institute of Science in Israel…Read More>>