A HUMAN FRIENDLY APPROACH TO SURFACE GENERATION

人类友好的表面生成方法

• 批准号: 06805014
• 负责人: FUKUDA Shuichi
• 金额: $ 1.47万
• 依托单位: TOKYO METROPOLITAN INSTITUTE OF TECHNOLOGY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1994
• 资助国家: 日本
• 起止时间: 1994 至 1995
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-06805014/
• 关键词: GEOMETRY GENERATION; IMAGE GEOMETRY; HUMAN FRIENDLY; DIRECT GENERATION; SKETCH; 3DIMENSIONAL GEOMETRY; INTERACTIVE; VIRTUAL REALITY; インタラクティブ

With the increasing diversity of customer's requirements and shortening of life cycles of products, the preliminary design becomes more and more important, and therefore the desire on the part of a designer to draw a curve and a surface as freely as he or she wishes is growing rapidly. But the conventional methods of curve or surface generation use control points to represent a geometry so that a curve or a surface can only be drawn indirectly. Thus, it is difficult to draw a curve or a surface as one desires and once drawn it is extremely difficult to modify it.Therefore, in this work, a method is develoeped which permits a designer to generate and modify a geometry very freely as if he or she is drawing a sketch on a sheet of paper, using such a device as a mouse or a three dimensional measuring device. No mathematical knowledge about control points is necessary in this method.In 1994, a curve generation method was developed and it was extended to 3 dimensional surface generation. In 1995, based upon these results and examinations, the 3 dimensional surface generation method was improved, and the methods were described in details for instructions for users.These 2 and 3 dimensional geometry generation methods smooths the trajectories of a mouse or a 3 dimensional measuring device by a moving average method and points of features are extracted from these curves or surfaces. And Bezier curves or their sweep curves are applied to generate a desired 2 or 3 dimensional geometries.If coupled with Virtual Reality devices, the geometry can be generated and modified flexibly and freely in a very interactive manner.

随着客户需求的日益多样化和产品生命周期的缩短，产品的初步设计变得越来越重要，因此设计师对自由绘制曲线和曲面的需求也在迅速增长。但传统的曲线或曲面生成方法使用控制点来表示几何图形，因此只能间接绘制曲线或曲面。因此，在这项工作中，开发了一种方法，允许设计者非常自由地生成和修改几何图形，就像他或她正在纸上绘制草图一样，使用鼠标或三维测量设备等设备。该方法不需要控制点的数学知识，1994年提出了一种曲线生成方法，并将其推广到三维曲面生成。1995年，在这些结果和检验的基础上，对三维曲面生成方法进行了改进，并对这些方法进行了详细的说明，以供用户参考。这些二维和三维几何生成方法通过移动平均法平滑鼠标或三维测量设备的轨迹，并从这些曲线或曲面中提取特征点。并应用Bezier曲线或其扫描曲线来生成所需的2或3维几何图形。如果与虚拟现实设备相结合，可以以非常交互的方式灵活地、自由地生成和修改几何图形。

项目成果

福田収一: "ヒューマンフレンドリーな曲面生成法の開発" 日本機械学会論文集C編. 60. 71-75 (1994)

Shuichi Fukuda：“开发一种对人类友好的表面生成方法”，日本机械工程师学会会刊，C 版（1994 年）。

SHUICHI FUKUDA: "DIRECT GENERATION OF A CURVE OR A SURFACE" PROCEEDINGS OF 7TH COMPUTATIONAL MECHANICS DIVISION,JAPAN SOCIETY OF MECANICAL ENGINEERS. NO.940-54. 238-240 (1994)

Shuichi FUKUDA：“曲线或曲面的直接生成”，日本机械工程师学会第七届计算力学分会论文集。

Shuichi FUKUDA: "Japanese Collaborative Product Development:Time for a Big Change" 日本機械学会第72期通常総会講演会講演論文集. No.95-1. 173-174 (1995)

Shuichi FUKUDA：“日本协作产品开发：大变革的时刻”，日本机械工程师学会第 72 届普通大会记录，第 95-174 号（1995 年）。

SHUICHI FUKUDA: "JAPANESE COLLABORATIVE PRODUCT DEVELOPMENT : TIME FOR A BIG CHANGE" PROCEEDINGS OF 72ND ANNUAL MEETING (VI), JAPAN SOCIETY OF MECHANICAL ENGINEERS. NO.95-1. 173-174 (1995)

福田秀一：“日本协作产品开发：是时候进行大变革了”，日本机械工程师学会第 72 届年会 (VI) 会议记录。

SHUICHI FUKUDA: "DEVELOPMENT OF A HUMAN FRIENDLY METHOD OF CURVE GENERATION" TRANSACTION C.JAPAN SOCIETY OF MECHANICAL ENGINEERS. 71-75 (1994)

Shuichi FUKUDA：“开发一种人类友好的曲线生成方法”交易 C.日本机械工程师学会。