3111 CAD Data Composition Method from 3D Sensed Data Based on Feature Extraction

Abstract

This paper proposes a new method f ( 〕 r constructing CAD data from 3D sensed data fbr the purpose of realizing reverse engineering ． In CAD data ofmany industrial products ， manufactUring featUres such as fiat planeS and cylinders are defined on the boundary surfaces． In thc proposed method flat planes ， cylinders and cones can be extracted frem the 3D sensed and CAD data that contains the features can be ◎onstructed． In the featllre extraction ， the feature that satisfies geometric constraint can be also extracted． The mcthod has been applied to some 3D sensed data and the validity of the method was confinlled ． Key Wbrds ：31)α D ぬ ' α co 〃 脚 謝 on ， 31)dig耽 θ4 跏 ' α ， feature ex ' アα σ 繊 ， 配 v ε厂ses enginee 廟 g， geemetric constra 碗