Sketch to search 3D retrieval system: Video Demo
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Use Light field to extract 2D silhouettes from 3D models in several views
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Map 2D silhouettes to grids and compute shape histogram to describe the shape for each 3D model
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Map sketch to grids and compute similarities in the database
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Sort and return 6 candidates models' indexes with high similarities
2014.5.5
New idea: use affine invariant detectors?
难点：
(1)kdtree数据结构转换
(2)算法优化减少时间复杂度