LiDAR by Mukesh Vyas, GISP

Human eye is similar to the sensor which fires pulses and senses color, intensity, texture, etc., in 3D. 
Human brain is the processor which calculates and stores information like location, position, etc., of each point captured by the eye. 
Eye captures millions of points and collectively those points become a cloud (of points). 
In other words, eye detects light and brain calculates range of the object from where light is reflected...that is why LiDAR is known as Light Ditection And Ranging.

Mukesh Vyas, GISP