Porn video identification method and system

The invention discloses a porn video identification method and a system. The method comprises steps of presetting a spatial distribution region of a body characteristic factor set beta of porn incidents, extracting a figure image in a frame sequence in a to-be-identified video according to the cycle, extracting a benchmark body reference edge T and characteristics thereof of the figure image in each frame, extracting time change characteristics mut and spatial change characteristics mus of the inter-frame benchmark body reference edge T, extracting a body characteristic factor set beta of an object figure in a frame, and comparing the body characteristic factor set beta of the object figure in a frame with the spatial distribution region of a body characteristic factor set beta of the preset porn incidents so as to judge whether the to-be-identified video is the porn video. According to the technical scheme of the invention, as motion information and body change information commonly existing in the porn video