典型文献
Pose-free assembly retrieval based on spatial-contact skeleton
文献摘要：
In complicated product industry such as aircraft manufacturing,an assembly model con-tains abundant engineering information for use in design,manufacture,and maintenance.Assembly retrieval can be used to find relevant models for knowledge reuse.However,an assembly with rotat-able joints may have many poses,which brings difficulty to assembly retrieval,since there is no pose principle for assembly design.Therefore,focused on rotatable joints in assembly,a skeleton-based descriptor for pose-free assembly retrieval is proposed.The centroid points of part surfaces and contact faces in an assembly are extracted to construct a spatial-contact skeleton.The skeleton-based distance is proposed to measure the distance between two surface points,which is invariant to the rotatable joints.The distribution of skeleton distances between two parts is used to describe the pair.Considering a part paired with all other parts in the assembly,the set of part pairs is used to represent a part,and the modified Hausdorff distance is used to measure the dissimilarity between parts for assembly retrieval.Experiments are conducted to compare the accuracy of the proposed descriptor to holistic and structureless descriptors.The proposed method is shown to retrieve assemblies with similar parts and structures regardless of their rotatable joints.
文献关键词：
中图分类号：
作者姓名：
Jianfeng YU;Jiazhen PANG;Jie ZHANG;Yuan LI
作者机构：
School of Mechanical Engineering,Northwestern Polytechnical University,Xian 710072,China
文献出处：
引用格式：
[1]Jianfeng YU;Jiazhen PANG;Jie ZHANG;Yuan LI-.Pose-free assembly retrieval based on spatial-contact skeleton)[J].中国航空学报（英文版）,2022(04):497-507
A类：
B类：
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AB值：
0.452366
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