The digital signal output by a digital camera, that is, the cell grayscale value, has a special number of bits, which is called cell depth.For black and white cameras, the orientation of this value is usually 8-16 bit.Cell depth defines the number of grayscales at which the grayscale is brightened by the dark channel.For example, for an 8-bit camera, 0  represents full darkness and 255  represents full brightness.Numbers between 0 and 25 represent certain brightness indicators.10bit data has 1024 grayscales and 12bit data has 4096 grayscales.We must carefully consider whether a very delicate grayscale level is required for every application.Upgrading from 8 bits to 10 bits or 12 bits can indeed enhance the measurement accuracy, but it also reduces the speed of the system and increases the difficulty of system integration (the cable increases, the size becomes larger), so we must also make careful choices.