ToF sensor is widely used because of unique advantages. In addition to convenient integration, there are many advantages as follows:
Low power consumption: ToF technology can directly measure the depth and amplitude information in each pixel using only one infrared light source. In actual scenes, highly reliable distance information and grayscale images of the complete scene can be obtained through the measured phase difference and amplitude value between the emitted light and the received light. In this process, ToF can keep power consumption at a very low level, and can provide fast data collection for real-time operation. In addition, the depth data processing required by ToF is lower than other algorithm-intensive depth sensing technologies such as structured light or stereo vision, so additional power can be saved on the application processor.
Small size: The inherent advantage of ToF technology is that its camera module is simple and robust. It consists of only two key components: the imager and a single flash lighting assembly. Therefore,tof camera module is very small, suitable for space-critical applications, such as smart phones, and can easily achieve stable mass production.
Accurate and fast measurement: Compared with other distance sensors such as ultrasonic or laser, ToF sensor can quickly synthesize 3D images of the scene. Not only that, the ToF sensor can accurately detect objects in a short period of time, and is not affected by humidity, air pressure, and temperature.
Long-distance measurement: Because the ToF sensor can measure long distances with extremely high accuracy. ToF sensors can flexibly detect near and far objects of various shapes and sizes.
Cost-effective: Compared with other 3D depth range scanning technologies (such as structured light camera systems or laser rangefinders), ToF sensors are relatively cheaper.
