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Person Identification based on Clothing Feature  

Choi, Yoo-Joo (Dept. of Newmedia, Korean German Institute of Technology)
Park, Sun-Mi (School of EECS, Kyungpook National University Division of Electrical)
Cho, We-Duke (Division of Electrical & Computer Engineering, Ajou University)
Kim, Ku-Jin (Dept. of Computer Engineering, Kyungpook National University)
Abstract
With the widespread use of vision-based surveillance systems, the capability for person identification is now an essential component. However, the CCTV cameras used in surveillance systems tend to produce relatively low-resolution images, making it difficult to use face recognition techniques for person identification. Therefore, an algorithm is proposed for person identification in CCTV camera images based on the clothing. Whenever a person is authenticated at the main entrance of a building, the clothing feature of that person is extracted and added to the database. Using a given image, the clothing area is detected using background subtraction and skin color detection techniques. The clothing feature vector is then composed of textural and color features of the clothing region, where the textural feature is extracted based on a local edge histogram, while the color feature is extracted using octree-based quantization of a color map. When given a query image, the person can then be identified by finding the most similar clothing feature from the database, where the Euclidean distance is used as the similarity measure. Experimental results show an 80% success rate for person identification with the proposed algorithm, and only a 43% success rate when using face recognition.
Keywords
person identification; clothing feature; color; texture; image analysis; surveillance system;
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