Apparatus and a method of feature edge extraction

专利名称：Apparatus and a method of feature edge

extraction from a triangular mesh model

发明人：Satoshi Kanai,Takeshi Kishinami,Tomohiro

Mizoguchi,Hiroaki Date

申请号：US11218059申请日：20050831

公开号：US20060265198A1公开日：20061123

专利附图：

摘要：A feature edge extraction technique supports automatic creation of a solidmodel from a 3D or triangular mesh model. The technique extracts feature edges from

the 3D mesh model according to a global normal-line evaluation method and animproved watershed method. The technique uses data related to the 3D mesh model,defines an area with a Euclidean distance, globally evaluates normals of triangles in thearea, calculates edge and vertex feature values, carries out discretization and

differentiation on the calculated vertex feature values, extracts feature edges satisfyingrequirements, divides the mesh model into segments each consisting of connectedtriangles according to the improved watershed method that is capable of groupingvertexes, extracts the boundaries of each segment as feature edges, allows a user tointeractively select required feature edges from among the extracted feature edges, andoutputs data related to the selected feature edges.

申请人：Satoshi Kanai,Takeshi Kishinami,Tomohiro Mizoguchi,Hiroaki Date

地址：Sapporo-shi JP,Sapporo-shi JP,Sapporo-shi JP,Sapporo-shi JP

国籍：JP,JP,JP,JP

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