\input zb-basic \input zb-ioport \iteman{io-port 05243262} \itemau{Wang, Yuehong; Liu, Rujie; Baba, Takayuki; Uehara, Yusuke; Masumoto, Daiki; Nagata, Shigemi} \itemti{An images-based 3D model retrieval approach.} \itemso{Satoh, Shin'ichi (ed.) et al., Advances in multimedia modeling. 14th international multimedia modeling conference, MMM 2008, Kyoto, Japan, January 9--11, 2008. Proceedings. Berlin: Springer (ISBN 978-3-540-77407-5/pbk). Lecture Notes in Computer Science 4903, 90-100 (2008).} \itemab Summary: This paper presents an images based 3D model retrieval method in which each model is described by six 2D images. The images are generated by three steps: 1) the model is normalized based on the distribution of the surface normal directions; 2) then, the normalized model is uniformly sampled to generate a number of random points; 3) finally, the random points are projected along six directions to create six images, each of which is described by Zernike moment feature. In the comparison of two models, six images of each model are naturally divided into three pairs, and the similarity between two models is calculated by summing up the distances of all corresponding pairs. The effectiveness of our method is verified by comparative experiments. Meanwhile, high matching speed is achieved, e.g., it takes about 3e-5 seconds to compare two models using a computer with Pentium IV 3.00GHz CPU. \itemrv{~} \itemcc{} \itemut{3D retrieval; 2D images; pose normalization; sampling; projection; models comparison} \itemli{doi:10.1007/978-3-540-77409-9\_9} \end