Laser-armed cameras

With the help of lasers, cameras can track moving objects hidden around corners, scientists say. The finding could one day help vehicles see around blind corners to avoid collisions, researchers added.
Laser scanners are now regularly used to capture 3D images of items. The scanners bounce pulses of light off targets, and because light travels at a constant speed, the devices can measure the amount of time it takes for the pulses to return. This measurement reveals how far the light pulses have traveled, which can be used to recreate what the objects look like in three dimensions.Prior research suggested that lasers could help locate items hidden around corners by firing light pulses at surfaces near the objects. These surfaces can act like mirrors, scattering the light onto any obscured targets. By analyzing the light that is reflected off the objects and other surfaces back to the scanner, researchers can reconstruct the shapes of the items.