PREPROCESSING APPARATUS FOR QUERY IMAGE AND SEARCHING IMAGE IN CONTENT BASED IMAGE RETRIEVAL USING SKETCH QUERY AND METHOF THEREFOR

摘要

PURPOSE: A preprocessing apparatus of a query image and a search object image in a content-based image searcher which uses a sketch query and a method thereof are provided to improve image search performance through the sketch query by transforming the sketch query and a database image. CONSTITUTION: A sketch query preprocessing unit(100) extracts an image feature by transforming an inputted sketch query. A database image preprocessing unit(200) extracts an image feature by transforming an image which is stored in a database(210). A similarity measurement unit(300) measures a similarity of two images which are processed through the sketch query preprocessing unit and the database image preprocessing unit. Based on the measured similarity, an image search unit(400) searches an image which has a high similarity with the sketch query from the database image preprocessing unit. [Reference numerals] (100) Sketch query preprocessing unit; (110) User input module; (120) Sketch query preprocessing module; (130) Sketch query feature extracting module; (200) Database image preprocessing unit; (210) Database module; (220) Database image preprocessing module; (230) Database image feature extracting module; (300) Similarity measurement unit; (400) Image search unit; (AA) Sketch query