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aithe apan image synthesis, sketch-based methods have been addressed for some time now. In 3D model retrieval, on the other hand, less work has to date considered the Query-by-Sketch framework. In fact, it is a non-trivial task to perform sketch-based 3D model re-trieval and also more difficult compared with the Query-by-Model etrieval, to mon sma sketch-based retrieval benchmark and soliciting retrieval from current state-of-the-art retrieval methods for comp We also provided corresponding evaluation code for comp set of performance metrics similar to those typically used to eval-uate Query-by-Model techniques. The objective of this track was to evaluate the performance of different sketch-based 3D model re-trieval algorithms using both hand-drawn and standard line draw-ings sketch queries on a watertight 3D model dataset. Every participant performed the queries and sent us their retrieval re-sults. We then did the performance assessment. q This paper has been recommended for acceptance by Nicu Sebe