Object trajectory tracking and identifying device and system based on computer vision

The invention belongs to the technical field of video stream analysis and processing, and relates to an object trajectory tracking and recognition device and system based on computer vision. The device comprises: a video stream access module used for acquiring video stream data; a heterochromatic space noise removing module which is used for eliminating irrelevant noise and mixed color pixel blocks in a video stream data frame image; an object retrieval module which is used for setting a specific color space region value to retrieve a pixel block of a to-be-tracked object; a calculation modulewhich is used for calculating the minimum circumcircle of the pixel block of the to-be-tracked object; a trajectory simulation module which obtains a trajectory of a central position determined by the minimum circumcircle of the to-be-detected object in the video stream data; a track detection module which detects whether a specific graph exists or not according to a motion track formed by the minimum circumcircle of the