PURPOSE: Object based image search system and search method are provided to effectively correspond to complex information inputted through a unit with various quality by using object based information extracted from an image or a video.;CONSTITUTION: A first registered video management module (202) stores/manages registered various images or videos being a search target. A first registered video information extraction module (203) extracts feature points from the registered image or video or visual properties of the feature points as video information. A class generation module (209) generates or classifies a class according to similarity of the video information. A first class information management module (210) stores/manages information about the class. A first search contents information extraction module (211) extracts search contents information from an image, a video, a voice or a text received through a user terminal for search.;COPYRIGHT KIPO 2013;[Reference numerals] (202) First registered video management module; (203) First registered video information extraction module; (204) First registered image information extraction module; (205) First registered video information extraction module; (206) Firs scene dividing unit; (207) First representative frame extraction unit; (208) First representative frame image information extraction unit; (209) Class generation module; (210) First class information management module; (211) First search contents information extraction module; (212) First searched image process unit; (213) First searched video process unit; (214) First searched sound process unit; (215) First search text process unit; (216) First registered image search module; (217) First image search unit; (218) First text search unit; (219) First searched result display; (221) First registered image DB; (222) Class information DB
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