Automatic pose-independent 3D garment fitting

Given a virtual garment model on a reference human model, we propose an automated 3D garment fitting system that fits the garment model to a target human model. The proposed method can transfer garment models between human models without any user guidance even when the reference and target human models have different poses. Our goal is not to resize or deform the original garment model according to the target human model but to yield realistic fitting results of the given garment on the target human models. Using pose-independent segmentation and cloth simulation, we achieve realistic and automatic fitting results in reasonable running time. Our method can replace the time-consuming manual fitting process that is necessary for many applications that use virtual garments, such as games, animations, CAD tools and online clothing stores.     

基于服装款式平面图的三维款式效果显示研究

本文介绍了由服装的款式平面图研究三维款式效果显示的途径,提出了一种非传统的实现三维着装效果显示的方法,即在款式平面图的基础上,结合标准人台的三维数据点,增加适当的服装空隙量来获取款式三维造型点并构造服装曲面,为服装的款式设计提供更直观的帮助。     

Interactive 3D garment design with constrained contour curves and style curves

This paper presents interactive techniques to design 3D garments conveniently and precisely with constrained contour curves and style curves. Contour curves, including silhouette curves and cross section curves, are used for garment surface modeling. Style curves, including seam lines, dart lines, notch lines and grain lines, are introduced for designing patterns on the triangular garment surfaces. Contour curves are extracted automatically from the boundaries of garment sub-meshes. The definitions and resolving rules of various constraints are introduced for editing the contour curves conveniently. Style curves are generated by projecting control points onto 3D garment triangular surfaces. In order to draw the style curves validly, some constraints are also introduced according to the craft requirements of pattern design. Furthermore, the effects of style curves in pattern flattening are analyzed, which can guide the designer to draw style curves more reasonably and enhance the pattern design quality. Finally, some examples are given to show that our methods can make the 3D garment design more flexible and friendly, and style curves can be applied into design patterns on 3D triangular surface for shoes, toys and so on.     

Feature based 3D garment design through 2D sketches

This paper presents a new approach for intuitively modeling a three-dimensional (3D) garment around a 3D human model by two-dimensional (2D) sketches input. Our approach is feature based—every human model has pre-defined features, and the constructed garments are related to the features on human models. Firstly, a feature template for creating a customized 3D garment is defined according to the features on a human model; secondly, the profiles of the 3D garment are specified through 2D sketches; finally, a smooth mesh surface interpolating the specified profiles is constructed by a modified variational subdivision scheme. The resulting mesh surface can be cut and flattened into 2D patterns to be manufactured. Our approach provides a 3D design tool to create garment patterns directly in the 3D space through 2D strokes, which is a characteristic not available in other computer aided garment design systems. The constructed garment patterns are related to the features on a human model, so the patterns can be regenerated automatically when creating the same style of garment for other human models. Our technique can greatly improve the efficiency and the quality of pattern making in the garment industry.     

基于款式设计的虚拟三维服装真实感效果模拟

介绍了由服装的二维款式设计研究三维款式真实感效果显示的步骤,并对人台参数化建模、服装的变空隙量模型等技术进行实践,提出了一种实现三维着装效果显示方法,为款式设计提供直观帮助.通过二维款式平面图到三维图形的映射得到可控的三维服装,通过精确可靠的三维数据模拟三维款式效果.在三维服装上添加全局纹理映射和多重纹理映射以及褶皱效果,增强服装设计可视化效果.     

三维人体及服装建模方法分析与实现

本文在对各种三维建模技术进行了分析的基础上,提出了一套建立三维人体及服装模型的方法。运用Matlab进行了方法的具体实现,提高了建模效率和模型的可控性,为实现三维服装款式智能设计奠定基础。     

适于网络试穿的快速三维服装仿真方法

三维服装仿真技术是虚拟试衣的核心,目前三维服装仿真常用有限元技术来实现,该方法仿真花费的时间较长不能满足网络试衣的要求。提出了一种基于服装裁剪分片技术的三维服装仿真方法,该方法参考服装设计知识将待仿真服装划分为若干衣片,然后用贝塞尔曲面分别模拟这些衣片,最后利用纹理映射技术把服装布料的图案映射到相应的衣片,得到服装三维仿真模型。实验表明利用该方法得到的三维服装模型能够把服装的基本试穿效果展示出来,而且所需的时间很短,可以满足在线试穿的要求。     

2D/3D Isometric Transformation Using Spring-Mass System

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A survey on CAD methods in 3D garment design

With the advance in virtual reality applications, garment industry has strived for new developments. This paper reviews state-of-the-art CAD methods in 3D garment design. A large range of techniques are selected and organized into several key modules which form the core of a 3D garment design technology platform. In each module, basic techniques are presented first. Then advanced developments are systematically discussed and commented. The selected key modules - digital human modeling, 3D garment design and modification, numerical integration of draping, 2D pattern generation, geometric details modeling, parallel computation and GPU acceleration - are discussed in turn. Major challenges and solutions that have been addressed over the years are discussed. Finally, some of the ensuing challenges in 3D garment CAD technologies are outlined.     

Parametric design of garment pattern based on body dimensions

Garment pattern-making is one of the most important parts in fashion design and production. However, the traditional pattern-making is an experience based work and very time-consuming. In this paper, we proposed a parametric design method of garment pattern based on body dimensions. Based on this method, we constructed a jeans' pattern recommendation system. The input items of the proposed system are three geometric constraint parameters (jean silhouette type, length and waist height) and three-dimensional constraint parameters (human body stature, waist girth and hip girth); the output of the proposed system are jeans' patterns. Also, four adjustable parameters (jeans' length, waist height, knee and leg opening) are designed to adjust patterns generated by the proposed system. If the jeans' pattern is not satisfying after virtual or real try-on, the adjustable input parameters of the proposed system can be applied for adjustment until the patterns are acceptable. Our proposed system can combine traditional pattern-making methods to generate jeans’ patterns automatically and rapidly, hence improving pattern-making efficiency significantly.     

基于VC 6.0和OpenGL的三维试衣系统研究*

提出了采用基于特征匹配的方法实现三维试衣效果的展示。首先提取Poser 6.0中的三维人体模型和服装模型数据;然后通过三维网格模型的曲率特征在人体模型与服装模型之间建立映射关系来完成匹配,这个过程是一种刚体变换即获取旋转矩阵和平移矢量两部分;最后在VC++ 6.0的开发环境下,利用OpenGL强大的三维建模功能实现了三维试衣平台的搭建。该平台不但可以帮助顾客快速、准确地完成服装款式的选择和试穿,而且为服装产品的个性化设计和网上销售提供了有力的支持。     

基于弹簧质点模型的二维/三维映射算法*

提出了一种用于服装设计的二维/三维映射算法.该算法基于弹簧质点变形模型,服装裁剪片二维到三维映射及三维到二维映射可以在该模型中得到统一的实现.在服装裁剪片二维到三维的映射过程中,二维裁剪片被放置在人体模型附近的初始位置,在缝合力的作用下,裁剪片自动变形并缝合到人体模型上.在服装裁剪片三维到二维映射的过程中,三维裁剪片被初始映射到指定的平面内,在弹性变形力的作用下,逐步变形并得到最终的二维裁剪片.在进行服装裁剪片二维到三维映射的过程中,考虑了干涉检验的问题.     

A new design concept: 3D to 2D textile pattern design for garments

‘The word “fashion” is synonymous with the word “change”. Fashion begins with fabrics and fabrics begin with colour’. This famous remark/definition of ‘fashion’ must now be revised in the era of digital technology. In this paper, we propose a novel print design concept, from 3D garments to 2D textiles. By taking advantage of the cutting-edge developments in surface parameterisation, cloth simulation and texture assignment, we develop a computer system that allows designers to create figure-flattering prints directly onto 3D garments, and will output 2D pattern pieces with matched texture that are ready for digital printing and garment production. It reverses the traditional design process from 2D fabrics to 3D garments. The results produced by the proposed method guarantee textural continuity in both garment and pattern pieces. It not only releases apparel makers from the tedious work of matching texture along seams, but also provides users with a new tool to create one-of-a-kind fashion products by designing personalised prints.     

以三维建模引擎为核心的新型建筑CAD系统研究

为了开发建筑设计全过程集成ＣＡＤ系统,提出了一种以三维建模引擎为核心的新建筑ＣＡＤ系统３ＤＭＥＣＡＤ （３Ｄ Ｍｏｄｅｌｉｎｇ Ｅｎｇｉｎｅ Ｂａｓｅｄ Ａｒｃｈｉｔｅｃｔｒｕａｌ ＣＡＤ Ｓｙｓｔｅｍ）。该系统的三维建模引擎是以基于特征的ＣＳＧ与Ｂ－ｒｅｐ混合模型为基础,作为系统的公用数据模块,实现向计算分析、仿真演示、设计成果提交等外部子系统模块的数据转化,同时利用特征识别技术实现各 同步更新     

基于PDMS的三维设计

本文结合CAD工作经验和PDMS三维设计集成系统开发，提出了三维设计制图的趋势和开发应用思路，并指出了系统集成的意义。     

基于草图交互的个性化服装生成方法

以建立和交互修改三维服装草图为设计手段,提出在三维人体模型上生成三维个性化服装的参数化造型方法．服装草图由2种基本几何元素组成：体现人体围度信息的封闭样条曲线和体现人体在高度方向上曲面形状过渡的不封闭样条曲线．将服装草图约束分为2类4种：一类是体现服装宽松程度的人体与服装曲面之间的间隙约束;另一类是服装几何元素本身之间的共点、共面与对称约束．从人体的特征点出发,通过间隙约束生成服装草图的几何元素;在共点、对称和共面约束下,由服装草图几何元素建立拓扑结构为四边网格的服装草图．服装草图的交互修改是草图约束维护的过程,构建侧视图、正视图、断面图3个视图组成草图修改平台,在平台上交互编辑特征曲线．服装曲面则以三维草图为框架,通过对四边网格双线性Coons曲面插值生成．提供的设计方法使服装的造型变得简洁、灵活．     

三维设计方法在地下矿山开拓设计中的应用

针对采用二维设计方法难以快速有效地获得最佳开采方案的问题,系统地介绍了三维设计方法的应用基础、"工作面+切片"功能、三维井巷工程模型创建和设计指标统计功能等。采用三维设计方法设计了云南某铁矿开拓系统方案,并对各方案进行了比较分析,最终确定了合理的开拓方案。     

支持人体模型驱动的三维服装参数化设计*

通过驱动人体模型来改变服装模型的方法实现服装三维设计。首先利用基于特征线造型的方法构造人体模型和服装模型,再将服装模型特征框架（garment model feature frame, GMFF）相对人体模型特征框架(body model feature frame, BMFF)进行曲线编码,然后再利用参数化方法驱动BMFF变形后,再对GMFF相对BMFF进行曲线解码,从而得到驱动以后的GMFF。通过曲面插值,利用BMFF和GMFF得到更新以后的人体模型和服装模型。给出的实例表明,利用该方法可以非常快速有     

面向服装合体性评价的虚拟人体建模及体型预测

提出了面向服装合体性评价的三维人体建模及预测建模方法。按照人体控制部位的比例对模型主体部分进行平面截取,通过比例缩放的方式实现个性化三维人体建模,最后通过NURBS进行曲面重建。同时,针对服装合体性评价服务的特点,引入体型随年龄变化知识库,根据用户的个性化要求提供顾客未来体型预测。实验结果表明该方法既实现简单,又可得到较满意的视觉效果,可为服装合体性评价等个性化定制服务奠定基础,具有广泛的应用前景。     

基于Inventor API的家具三维造型设计

国内外家具业趋向于设计出不同系列风格的家具,同时又要求提高设计效率.为了能够满足这方面的需要,通过研究Inventor API的功能,关联Inventor与数据库Excel,运用Inventor的二次开发工具Autodesk Inventor Wizards,基于VB.NET实现了对话框界面的通讯机制,即实现人机交互界面以达到程序自动建模的功效.从已有的家具模版中自动地生成新的家具,并能够替换整体家具的零部件,大大地提高了设计效率,实现并给出了程序示例.快速、自动地新建家具模型的结果表明,基于Inventor API的技术在家具三维造型设计二次开发中具有重要的意义.