In order to eliminate the chaff jamming threat in the modern electronic warfare, a image recognition method is proposed, which can identify the vessel on the sea in the chaff jamming. The vessel image captured by a video radar is disposed by gray transform, elimination chaff cloud, elimination background, binaryzation transform, projection, seeking and demarcating center of mass, and so on. After these processes, obtains the vessel’s two value image: the vessel is black, the background is white, and the center of mass is demarcated. This method is effective in processing a video radar’s image including the vessel’s image.