为支持机械类网格模型的搜索,提出了两种基于模型主轴序列剖视图的形状描述子,分别是侧重表示视图区域的主轴剖视图傅里叶矩描述子和侧重表示视图边界的线段分布直方图。将面向场景搜索的时间相似度度量框架引入到模型搜索领域,给出了一种基于主轴序列剖视图相似性的模型距离计算方法。通过模型搜索的实验验证了上述两种形状描述子及模型距离度量方法的实用性和有效性。
To support mechanical mesh model retrieval,two shape descriptors were presented.One descriptor focused on representing shape region of sectional drawings which named Principal Sectional Drawing Moment Fourier Descriptor(PSD-MFD).The other one named Segment Distribution Histogram(SDH)focused on shape contour.Moreover,a scene-retrival-oriented method named Framework for Temporal Similarity(FTS)was introduced to model retrieval and a distance measurement based on principal sectional drawing was given.Results from the retrieval experiment demonstrated the feasibility and effectiveness of two descriptors and the distance measurement.