Implementation of Real-Time Motion Detecting Algorithm based on DSP

An intelligent monitoring system was designed, which based on DM642 as the hardware platform, video capture, output circuit and Ethernet interface circuit are included. An improved three frame differencing is applied in video moving target detection. In this method, variation trend of video adjacent frame difference is used as the basis of video motion detecting alarm. Moving target will be extracted by image morphology method after it entered monitoring area, less main memory resource is occupied, and execution speed is sped up. The experimental result of moving target monitoring in the snowy day is showed, and it proved not only the alarm accuracy was improved, the disturb such as snowflakes, shaking leaves, variable lighting and so on were also avoided effectively.