权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

Development of a general-purpose freehand graphics input front-end processor which provides sketch recognition services

开发提供草图识别服务的通用手绘图形输入前端处理器

基本信息

批准号：
14380153
负责人：
SAGA Sato
金额：
$ 3.71万
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：
2002
资助国家：
日本
起止时间：
2002 至 2003
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-14380153/
关键词：
CAD Freehand Input Figure Recognition Gesture Recognition Human Interface Pen Input Front-End Processor Fuzzy Theory

项目摘要

When this research started, we had already established a freehand curve identifier FSCI, which identifies a freehand curve as one of seven kinds of curve primitives : line, circle, circular arc, ellipse, elliptic arc, free closed curve, or free open curve, and had developed a freehand sketch input user interface based on FSCI. The aim of this research was to establish a framework which enables the freehand sketch input user interface to work as a front-end processor (FEP) for existing practical CAD applications, and to confirm the effectiveness of sketch input in practical design tasks. Through the research, we first made investigation on communication between the FEP and CAD applications and established a communication protocol that exchanges view port information, model space information and graphic primitive information. Then, we materialized a concrete prototype of the FEP as SKIT (Sketch Input Tracer) based on the established protocol. Finally, we made some experiments where we let SKIT work with two existing CAD applications, which were AutoCAD and Shade. The experimental results showed that users could make use of both of the intuitive sketch input interface by SKIIT and rich commands of CAD applications in seamless manners, and that the combination of SKIT and a practical CAD application functions as a practical sketch input CAD application. Future work will focus on conducting experiments to let SKIT work with some other different kinds of CAD applications and making quantitative and objective evaluations on the effectiveness of the sketch input interface.

在本研究开始时，我们已经建立了一个手绘曲线识别器FSCI，它将手绘曲线识别为七种曲线基元之一：直线、圆、圆弧、椭圆、椭圆弧、自由闭合曲线或自由开放曲线，并开发了基于FSCI的手绘草图输入用户界面。本研究的目的是建立一个框架，使手绘草图输入用户界面作为一个前端处理器（FEP）现有的实际CAD应用程序，并确认草图输入在实际设计任务的有效性。通过研究，首先对FEP与CAD应用程序之间的通信进行了研究，建立了一个交换视口信息、模型空间信息和图元信息的通信协议。然后，我们实现了一个具体的原型的FEP为SKIT（草图输入跟踪器）的基础上建立的协议。最后，我们做了一些实验，让SKIT与两个现有的CAD应用程序一起工作，这两个应用程序是AutoCAD和Shade。实验结果表明，用户可以无缝地利用SKIIT直观的草图输入界面和CAD应用程序丰富的命令，SKIIT与实际CAD应用程序的结合可以作为一个实用的草图输入CAD应用程序。未来的工作将集中在进行实验，让SKIT工作与其他不同类型的CAD应用程序，并作出定量和客观的评价草图输入接口的有效性。