The objection extraction method using motion picture

PURPOSE: A method for extracting an object by using a moving picture is provided to accurately find the wanted object with improving calculation speed by using a moving picture and color information. CONSTITUTION: In a moving picture photographed by a camera, two stop images are obtained leaving time difference for extracting difference image and only skin-color area from the image obtained later(S1-S4). The difference image and the skin-color area image are AND-operated for extracting skin-color and moving image, and grid-processes the extracted area at the fixed size(S5). Connected components are obtained by using connecting information in plural directions and the minimum area including each elements is defined(S6). The conditions of the defined area is compared with preliminarily set value for selecting the area satisfying the conditions as a face area(S7). The density of each line constructing the selected area is compared with threshold value for optimization(S8-S9).