Advantage of ToF sensor technology is that its recognition distance is farther than structured light (about 0.4 meters to 5 meters), its anti-interference is strong, and each point can directly provide complete depth information, and the transmitted data is already available. , and the physical information such as the speed of light is known, so only a relatively simple algorithm can be used to separate the scanned object from the background to obtain a 3D image. It is not necessary to obtain its depth information and amplitude information through a large amount of calculation through CPU/ASIC like structured light. Although the power consumption of the ToF sensor itself is relatively high, the overall system-level power consumption can also be controlled due to its small amount of depth information calculation and low power consumption for the corresponding calculation.
Compared with structured light, ToF sensor technology can be applied not only to 3D face recognition, 3D modeling, etc., but also to environment reconstruction, gesture recognition, Somatosensory games, AR/VR and other applications. Especially with the resurgence of the AR/VR market in the past two years, ToF technology has become more widely used.