| 摘要: |
| 提出一种三维极半径曲面矩,并应用于三维模型检索.三维极半径矩是一种具有平移、旋转和缩放不变性的不变量,将三维极半径矩推广到三维极半径曲面矩获得了新的不变矩,该方法不需要将三角面片表示的三维模型数据体素化,从而提高了计算速度和计算精度.同时,基于这种三维极半径曲面矩的识别算法具有很好的识别率. |
| 关键词: 三维模型检索 三维极半径矩 三维极半径曲面矩 不变矩 |
| DOI： |
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| 基金项目:Supported by the National Natural Science Foundation of China under Grant Nos.60533090, 60573154 (国家自然科学基金); the National Basic Research Program of China under Grant No.2004CB318000 (国家重点基础研究发展计划(973)) |
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| 3D Model Retrieval Based on Polar-Radius Surface Moment Invariants |
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LI Zong-Min,LIU Yu-Jie,LI Hua
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| Abstract: |
| In this paper, a 3D polar-radius surface moment is proposed, and is used for 3D model retrieval. 3D polar-radius surface moments are new moment invariants based on 3D polar-radius moments including the invariance on shift, rotation and scale transforms. Compared to previous methods to compute such moments, the computational complexity for calculating 3D moments can be decreased considerably. With the help of these moment invariants, the 3D models are distinguished accurately. |
| Key words: 3D model retrieval 3D polar-radius moments 3D polar-radius surface moments invariant moments |
