In long-distance application scenarios such as AR applications and gesture recognition, the ToF solution is more suitable. ToF camera has the characteristics of simple structure, smaller module size, longer detection distance, lower material cost, etc., and it has more advantages in the rear scene of smartphones.
Compared with other depth camera solutions, tof camera will have richer depth of field information, safer 3D face recognition, smaller size, lower environmental requirements, and lower cost. It is expected that most smartphones in the future Manufacturers will configure tof camera.
At present, ToF technology mainly includes iToF (indirect ToF) and dToF (direct ToF). dToF is a direct measurement of the flight time of light. The measurement distance is long, and the depth accuracy will not decrease with the increase of distance. It is more suitable for long-distance applications.
iToF is an indirect measurement of the flight time of light by testing the phase difference between the emitted light and the reflected light. Its pixels are compatible with ordinary CIS technology, the image resolution is relatively high, and the system complexity is relatively small. More suitable for short-range applications.
