Video analysis based recognition method and device

The invention discloses a video analysis based recognition method and device. The recognition device comprises a video preprocessing module, an identity library module, a tracking and detecting module and an alarm information module, and is characterized in that the video preprocessing module is used for acquiring a video data packet, converting the data packet into an image and performing binarization processing on the image; the identity library module is used for extracting personnel identity attribute information and personnel key part feature information, storing the personnel identity attribute information and the personnel key part feature information in a separated manner and forming a personnel identity library; the tracking and detecting module is used for tracking and extracting feature target information of personnel key parts on the binary image, comparing the extracted feature target information with personnel key part features in the personnel identity library and acquiring a judgment result; a