Image fire hazard detection method based on video monitoring platform

The invention discloses an image fire hazard detection method based on a video monitoring platform. The method comprises the following steps of carrying out format conversion on an input video code stream; after real-time transcoding is performed and a digital code stream is extracted in an original hard disk video recorder, using a fire hazard image detection server to carry out identification; and if a fire hazard is determined, carrying out alarm; The method is characterized in that carrying out pretreatment on a video stream; carrying out motion detection on the video stream and acquiring a motion pixel; carrying out connected domain extraction on the motion pixel according with a condition; carrying out multilayer color detection on each connected domain and retaining the connected domain possessing a flame and smoke characteristic color; calculating a corresponding area change amount and a center moving rate for a connected domain according with a flame color characteristic and carrying out analysis of a dynamic change amount; carrying out wavelet transformation on a connected domain according with a smoke color characteristic, extracting a high frequency component and calculating an attenuation degree of the high frequency component; calculating a perimeter and an area of each connected domain and carrying out static state shape analysis; and finally determining whether the fire hazard is generated. A rate of false alarm is reduced.