STL and Blender source files are included. CAD source/reference: Ding-Yun Chen, Xiao-Pei Tian, Yu-Te Shen and Ming Ouhyoung, "On Visual Similarity Based 3D Model Retrieval", Computer Graphics Forum (EUROGRAPHICS'03), Vol. 22, No. 3, pp. 223-232, Sept. 2003.
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