Tof camera for collision avoidance system

In 2016, commercial drones began to appear on the market, which can detect obstacles. When the drone installed tof camera detects an object, it can take actions of stopping and hovering, and it can also navigate around the object. One of the many functions of the ToF camera is for obstacle avoidance and collision avoidance.
When researching some of the latest drones on the market, most of them use ToF camera to avoid obstacles. One of the drones only uses the ToF camera to detect objects above the drone. Another drone uses a ToF camera combined with other sensors to avoid obstacles.
With more development, in the future will see more drones using ToF camera sensors for obstacle detection.