Computer vision is a science that studies how to make the machine see. Furthermore, it refers to the use of camera and computer instead of human eye to recognize, track and measure the target, and further do graphics processing, so that computer processing becomes more suitable for human eye observation or transmitted to the instrument for detection. As a scientific discipline, computer vision studies related theories and technologies, trying to establish an artificial intelligence system that can obtain 'information' from images or multidimensional data.