Development of An Intuitive General-purpose 3-Dimensional CAD Input Method Based on Spatial Drawing Gesture Recognition

基于空间绘图手势识别的直观通用3维CAD输入方法的开发

• 批准号: 12480077
• 负责人: SAGA Sato
• 金额: $ 3.9万
• 依托单位: MURORAN INSTITUTE OF TECHNOLOGY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2000
• 资助国家: 日本
• 起止时间: 2000 至 2001
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-12480077/
• 关键词: CAD; Freehand Input; Figure Recognition; Gesture Recognition; Human Interface; Pen Input; Virtual Reality; Fuzzy Theory

The aim of this research was to establish FSCI-3D, which is a method that recognizes freehand drawing gesture in 3-dimensional space as spatial geometric curves, and to construct an intuitive general-purpose 3-dimensional CAD input interface on the basis of FSCI-3D. Through the research, we have materialized two versions of prototypes of such interfaces, which are respectively named "BlueGrotto" and "Grand BlueGrotto", utilizing immersive virtual reality environments. We have also confirmed that users can input a great variety of 3-dimensional geometric CAD primitives, such as a cube, a rectangular parallelepiped, a sphere, a column, a cone, a torus, a tube, a body of rotation, and so on, by an intuitive and consistent procedure. The outline of the user interface is as follows.1. A user draws a swept shape and a sweeping path using a pen in a immersive virtual reality environment.2. FSCI-3D recognizes the shape and the path by inferring the intention of the user from the drawing manner, and identifies them as a combination of spatial geometric curves such as lines, circles, circular arcs, ellipses, elliptic arcs, closed free curves and open free curves.3. The interface automatically snaps the identified objects to align them.4. If needed, a user can make fine adjustments to the objects by pen-based editing interface.5. The interface creates a 3D-CAD entity by sweeping the swept shape along the sweeping path. (For example, a circle swept along a circular arc creates a sphere.)

本研究的目的是建立一种将三维空间中的手绘手势识别为空间几何曲线的方法FSCI-3D，并在此基础上构建一个直观的通用三维CAD输入界面。通过研究，我们已经实现了两个版本的原型这样的接口，这是分别命名为“蓝洞”和“大蓝洞”，利用沉浸式虚拟现实环境。我们还证实，用户可以输入各种各样的三维几何CAD图元，如立方体，长方体，球体，圆柱，圆锥体，圆环，管，旋转体等，通过一个直观和一致的过程。用户界面的概要如下。1.用户在沉浸式虚拟现实环境中使用笔绘制扫掠形状和扫掠路径。FSCI-3D通过从绘制方式推断用户的意图来识别形状和路径，并将其识别为直线、圆、圆弧、椭圆、椭圆弧、封闭自由曲线和开放自由曲线等空间几何曲线的组合.界面自动捕捉识别的对象，以对齐它们。4.如果需要，用户可以通过基于笔的编辑界面对对象进行微调。5.该界面通过沿扫掠路径沿着扫掠形状来创建3D-CAD实体。（例如，沿沿着圆弧扫掠的圆将创建球体。）

项目成果

Naoki NISHIZUMI et al.: "Abstraction of Input Devices of A Freehand-Drawing-Recognition-Based 3-Dimensional Modeler "BlueGrotto""IPSJ Symposium Series. 2002-7. 55-56 (2002)

Naoki NISHIZUMI 等人：“基于手绘图识别的 3 维建模器“BlueGrotto”的输入设备的抽象”IPSJ 研讨会系列。

Yoichi SATO et al.: "Sequential Fuzzy Spline Curve Generator"IPSJ SIG Notes. 2000-HI-90, 2000-8. 1-8 (2000)

Yoichi SATO 等人：“顺序模糊样条曲线生成器”IPSJ SIG 注释。

西住 直樹: "手書き認識に基づく3次元モデラーBlueGrottoにおける入力デバイスの抽象化"情報処理学会シンポジウムシリーズ「インタラクション2002論文集」. 2002・7. 55-56 (2002)

Naoki Nishizumi：“基于手写识别的 3D 建模器 BlueGrotto 中的输入设备的抽象”日本信息处理协会研讨会系列“Interaction 2002 Proceedings” 55-56（2002）。

佐藤 洋一: "逐次型ファジィスプライン曲線生成法"情報処理学会研究報告2001-HI-90. 2000・81. 1-8 (2000)

佐藤洋一：“顺序模糊样条曲线生成方法”日本信息处理学会研究报告2001-HI-90 2000・81.1-8（2000）。

Yukinori SUZUKI et al.: "Signal Processing and Pattern Recognition with Soft Computing"Proceedings of the IEEE. 89-9. 1297-1317 (2001)

Yukinori SUZUKI 等人：“软计算的信号处理和模式识别”IEEE 会议录。