Structured light is a 3D imaging technique that uses a light projector to cast a known pattern of light onto an object. The pattern is then captured by a camera, and the 3D shape of the object can be reconstructed by analyzing the deformation of the pattern.
Some of the emerging trends in structured light include the use of light-emitting diodes (LEDs) for structured light projection, the use of digital micromirror devices (DMDs) for high-speed projection, and the use of MEMS devices for miniaturized projection.