freehand sketching

Be different with obverse modeling method described in chapter 2nd, chapter 3rd introduces an application of freehand sketching applied in reverse engineering modeling: curves construction onto point cloud based on sketches.

和第二章手绘正向造型不同的是，第三章描述了手绘方法在逆向造型中的应用：点云表面曲线的手绘构建。

Understand freehand sketching methods and axonometric drawing methods of sections.

了解徒手作剖视草图和剖视轴测图技能。

Study skills of freehand sketching.

学习徒手绘图的方法。

Online Freehand Sketching Recognition ( FSR) Using Primarily Conic Sections

基于二次曲线的在线手绘图识别

As a direct, convenient, natural and efficient human-machine interactive way, freehand sketching becomes more and more important during the development of CAD technologies.

徒手草绘作为一种简便、自然、高效的人机交互方式，在计算机辅助设计领域越来越受到人们的重视。

Decide a reasonable representation scheme and draw the three-view of the design by freehand sketching.

确定合理的表达方案，并徒手绘制出其三视图。

In this thesis, we mainly study the method for on-line recognizing the freehand sketching for the single stroke.

本文主要研究了手绘图在线识别中的单笔划识别问题。

When come to Chinese freehand figure painting, sketching the development to have the important meaning.

如今，时值当下文化发展中，写生对于中国写意人物画的发展具有重要的意义。

Freehand sketching user interface has uncovered its power of achieving fluent interaction between users and computers in performing graphical tasks.

而基于手绘的交互接口已经渐渐展现了其在用户和计算机之间良好的沟通作用。

Firstly, the paper introduces existed researches and achievements with respect to freeform modeling and interaction. Then chapter 2nd describes a 3D conceptual designing method based on freehand sketching.

首先，在介绍了当前手绘造型和交互的众多研究方向和研究成果后，本文第二章描述了一种基于手绘的三维概念设计方法。