关键词: 三维模型, 草图检索, 投影视图, 最优视图

Abstract:

A 3D model retrieval method based on sphere projection is proposed in order to solve the problems of domain mismatch and how to select views when sketch retrieves 3D models. Firstly, two-dimensional view acquisition method based on sphere projection is proposed according to the domain mismatch problem, and the Gaussian difference and Bezier curve are used to extract the line graph. Secondly, a classifier is constructed by using the relationship between the sketch and the projected image to obtain an optimal view of the model. Finally, the features of the sketch and 2D view are obtained through two Siamese networks, and the joint Bayesian method is used to fuse the output of the sketch and the 2D view to obtain the final result. The experiments prove the feasibility of the method and has better retrieval effect than other methods.

Key words: 3D model, sketch retrieval, projection view, optimal view