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Eclipse Draw2D的PostScript矢量图输出 被引量:1
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作者 李健斌 陈志伟 +1 位作者 郑振耀 颜志平 《现代计算机》 2012年第9期46-51,共6页
Draw2D是Eclipse平台的一组API,用于处理2D图形及图像。由于Java只支持位图的读写,而不支持矢量图的处理,因此出现不少支持Java 2D矢量图导出的第三方软件包,然而还没有软件包具有Draw2D图像的矢量导出功能。通过对Draw2D软件包和PostSc... Draw2D是Eclipse平台的一组API,用于处理2D图形及图像。由于Java只支持位图的读写,而不支持矢量图的处理,因此出现不少支持Java 2D矢量图导出的第三方软件包,然而还没有软件包具有Draw2D图像的矢量导出功能。通过对Draw2D软件包和PostScript语言的研究,并对EPS文件格式进行探讨,成功把Draw2D图像导出成EPS矢量图文件,为其后期处理提供便利的途径。 展开更多
关键词 draw2d POSTSCRIPT 矢量图 EPS格式
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面向Web应用整合开发的页面编辑器的设计与实现
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作者 廖坤 谭景信 栾名君 《计算机工程与设计》 CSCD 北大核心 2010年第12期2890-2893,共4页
在传统Web应用的开发过程中,开发人员不仅需要手动编写大量的、重复的、枯燥乏味的页面代码,而且需要手动控制页面元素的布局,使得开发人员不能集中精力处理业务逻辑,造成开发效率降低。设计了一种前台快速开发的页面编辑器,整合了当前... 在传统Web应用的开发过程中,开发人员不仅需要手动编写大量的、重复的、枯燥乏味的页面代码,而且需要手动控制页面元素的布局,使得开发人员不能集中精力处理业务逻辑,造成开发效率降低。设计了一种前台快速开发的页面编辑器,整合了当前几种流行的页面技术,基于GEF(Eclipse图形编辑框架)和Draw2D(2维图形绘制框架)框架提供了所见即所得的图形设计平台。使用该平台,开发人员只需编写少量脚本,因此有效地降低了技术门槛,极大地提高了开发效率。 展开更多
关键词 WEB应用 页面技术 页面编辑器 图形编辑框架 2维图形绘制框架
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3D object reconstruction by point coordinates of 2D line drawings 被引量:1
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作者 HAO Wuqiang DONG Lijun 《Computer Aided Drafting,Design and Manufacturing》 2013年第1期32-35,共4页
It is a research subject in computer vision to 3D reconstruction of an object represented by a single 2D line drawing. Previous works on 3D reconstruction from 2D line drawings focus on objects with lines, plane, view... It is a research subject in computer vision to 3D reconstruction of an object represented by a single 2D line drawing. Previous works on 3D reconstruction from 2D line drawings focus on objects with lines, plane, view, and so on. This paper mainly studies the 3D reconstruction from 2D line drawings. Besides, a new approach is proposed: it is that for the research of the point coordinates of 2D line drawings, so as to achieve the object reconstruction by the reconstruction of point coordinates. The reconstruction process includes: (1) the collection of point coordinates (X,Y) of 2D line drawings; (2) the derivation of mathematical formula about the reconstruction of the point of 2D line drawings, and calculating the corresponding point of the 3D coordinates; (3) the regeneration of 3D graphics with 3D points; (4) analyze error by the proportional of parallel of axonometric projection, in order to prove the accuracy of the method. 展开更多
关键词 2D line drawings point coordinates 3D reconstruction
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An approach for converting orthographic projection drawings into 3D-CAD models
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作者 Gao Sande Huang Loulin 《Computer Aided Drafting,Design and Manufacturing》 2016年第3期39-43,共5页
Abstract: Hand drawings and two dimensional (2D) CAD drawings have been replaced by three dimensional (3D) CAD models in mechanical design, but some 2D drawings produced before are needed in the new design. Howev... Abstract: Hand drawings and two dimensional (2D) CAD drawings have been replaced by three dimensional (3D) CAD models in mechanical design, but some 2D drawings produced before are needed in the new design. However, the techniques and software packages for automatically converting 2D drawings into 3D-CAD models with high precision have not yet been developed due to the difficulties to verify the validity of the drawings, to decide the hidden lines and eoncavo-convex faces, and to represent free-form surfaces. In addition, it is very time consuming to manually convert a large number of 2D drawings into 3D CAD models. To address these problems, we propose an approach for converting 2D drawings into 3D-CAD models automatically. 展开更多
关键词 2D drawing DXF image recognition 3D-CAD model B-REP data structure
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3D Reconstruction from 2D Line Drawings only with Visible Vertices and Edges
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作者 WANG Xuan DONG Lijun 《Computer Aided Drafting,Design and Manufacturing》 2014年第1期42-45,共4页
The human vision system can reconstruct a 3D object easily from single 2D line drawings even if the hidden lines of the object are invisible. Now, there are many methods have emulated this ability, but when the hidden... The human vision system can reconstruct a 3D object easily from single 2D line drawings even if the hidden lines of the object are invisible. Now, there are many methods have emulated this ability, but when the hidden lines of the object are invisible, these methods cannot reconstruct a complete 3D object. Therefore, we put forward a new algorithm to settle this hard problem. Our approach consists of two steps: (1) infer the invisible vertices and edges to complete the line drawing, (2) propose a vertex-based optimization method to reconstruct a 3D object. 展开更多
关键词 3D reconstruction 2D line drawings hidden topology
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