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    • 10. 发明授权
    • Method of perceptual 3D shape description and method and apparatus for searching 3D graphics model database using the description method
    • 感知3D形状描述的方法和使用描述方法搜索3D图形模型数据库的方法和装置
    • US07171060B2
    • 2007-01-30
    • US10727660
    • 2003-12-05
    • In-kyu ParkDo-kyoon KimSang-uk LeeIl-dong YunDuck-hoon Kim
    • In-kyu ParkDo-kyoon KimSang-uk LeeIl-dong YunDuck-hoon Kim
    • G06K9/54G06K9/00G06T15/00
    • G06T17/00G06T2210/61
    • A method of perceptual 3-dimensional (3D) shape description and a method and apparatus for searching a perceptual 3D graphics model database established using the description method are provided. The description method includes: generating nodes that respectively correspond to parts of a part-based representation of a 3D shape model, the nodes including unary attributes of the parts; generating edges that include relational attributes between the nodes; and generating an attributed relational graph of the 3D shape model that is comprised of the nodes and the edges. The search method includes: receiving a predetermined 3D graphics model; transforming the received 3D graphics model into a perceptual 3D shape descriptor; and comparing the perceptual 3D shape descriptor with each of the perceptual 3D graphics models stored in the database to retrieve the 3D graphic models that are similar to the perceptual 3D shape descriptor. The searching apparatus includes: a query input unit that receives a query that is a 3D graphics model; a model/shape descriptor transforming unit that transforms the 3D graphic model received as the query into a perceptual 3D shape descriptor; a matching unit that compares the perceptual 3D shape descriptor with each of the perceptual 3D graphics models stored in the database to retrieve the models that are similar to the perceptual 3D shape descriptor; and a model output unit that outputs the retrieved model. A query by sketch or a query by editing is available, and the models that are similar to a query can be more accurately retrieved due to a double earth mover's distance method used to match query and model graphs.
    • 提供一种感知三维(3D)形状描述的方法以及用于搜索使用描述方法建立的感知3D图形模型数据库的方法和装置。 描述方法包括:生成分别对应于3D形状模型的基于部分的表示的部分的节点,所述节点包括部分的一元属性; 生成包括节点之间的关系属性的边; 并且生成由节点和边缘组成的3D形状模型的归属关系图。 搜索方法包括:接收预定的3D图形模型; 将接收的3D图形模型转换为感知3D形状描述符; 以及将感知3D形状描述符与存储在数据库中的每个感知3D图形模型进行比较,以检索类似于感知3D形状描述符的3D图形模型。 搜索装置包括:接收作为3D图形模型的查询的查询输入单元; 将作为查询接收到的3D图形模型变换为感知3D形状描述符的模型/形状描述符变换单元; 匹配单元,其将感知3D形状描述符与存储在数据库中的每个感知3D图形模型进行比较,以检索类似于感知3D形状描述符的模型; 以及输出所检索的模型的模型输出单元。 通过草图查询或通过编辑进行查询是可用的,并且由于用于匹配查询和模型图的双土动员的距离方法,可以更准确地检索与查询类似的模型。