Moving object monitoring device and moving object monitoring system

A moving object monitoring system that transmits a color image and a monochrome image obtained by capturing, at a moving object monitoring device, a monitoring area where a moving object to be monitored appears, from the moving object monitoring device to an image storage device through a network,

• wherein the moving object monitoring device includes
• a color camera that captures the monitoring area using environmental light,
• a monochrome camera that captures the monitoring area using infrared light,
• a signal processor that processes a signal of a color image output from the color camera and a signal of a monochrome image output from the monochrome camera, and
• a communication unit that transmits the color image and the monochrome image processed by the signal processor to the image storage device, and
• the signal processor includes
• a resolution converter that reduces a number of pixels in the color image by adding a signal value of each of a plurality of adjacent pixels in the color image, and
• a signal processing controller that controls an operation of the resolution converter based on a capturing environment of the monitoring area.