unmanned air vehicles and driverless/driver-assisted cars
gaming, simulation, training in high-fidelity virtual replicas of real-world
environments, augmented reality visualization, consumer mobile 3D photography
navigation and human navigation in obscured or unknown environments
marketing, appraisal, safety inspection, renovation modeling or energy survey
production (capturing virtual representations of real-world sets)
Three-dimensional (3D) sensing capabilities has become important in the defense, commercial and industrial sectors. However, existing 3D imaging technologies cannot meet the stringent size, weight, and power requirements for a variety of day/night, medium-range applications. Many existing image detector schemes suffer from readout circuitry bottlenecks, including limited data rate and high read noise. Furthermore, applications such as advanced unmanned systems exceed current imaging capabilities.
The Space-Time Modulated Active 3D Imager-on-chip is a tightly-integrated system of a laser light source, optical elements, photo-sensitive focal plane array, and integrated circuit electronics. Functionally, the main system components are the source, the detector, and the processing system. The light produced by the source bounces off of the scene and back to the detector; the processing algorithm is then able to infer the 3D structure of the scene by comparing the detected image to a known, pre-calibrated reference image. The sensor provides a dense 2D map within its field-of-view with a depth map for preservation of the 3D structure. The device can operate at a high frame-rate, so that the sequence of images output can be viewed as a full-motion video. This on-chip imager enables a high-fidelity capture of the scene with low size, weight and power requirements.
day/night operation with small size, weight and power requirements
maximum range and wide field-of-view at high resolution
to featureless/feature-aliased environments and sensor platform motion
on-chip computation; no external processing required with easy integration with
other imaging devices