? When the color image is illuminated by light (sunlight or light), the infrared light in the camera is blocked by the photosensitive resistor of the camera (infrared light does not work), and the collected image is the original color image, while when the light is dark or there is no light, the black-and-white image is activated.
At this time, infrared framing is naturally black and white (just like what you see through infrared night vision equipment at night), so the recorded video file will be displayed on the display screen in original color and black and white.
From black and white to color, the monotonous world of monitoring images has moved towards a colorful, colorful and realistic world; From flashing to non-flashing, it brings health to monitoring personnel; From CRT (cathode ray tube) to LCD (liquid crystal), it brings environmental protection, which is the ultimate development goal of monitoring display.
Baidu Encyclopedia-Monitoring Display