DEWS2006 5B-o3 DR † † † 182-8585 1–5–1 E-mail: †{yokotaka,watanabe}@sd.is.uec.ac.jp DR DR-region image and Fractal correlogram: An image feature representation method based on fractal codes and its application to image retrieval Takanori YOKOYAMA† and Toshinori WATANABE† † Graduate School of Information Systems, University of Electro-Communications 1–5–1 Chofugaoka, Chofu-shi, 182–8585 Tokyo, Japa