【作者】 耿玉磊；

【导师】 陆国栋；

【作者基本信息】 浙江大学 ， 机械设计及理论， 2010， 博士

【摘要】 随着市场竞争的加剧,服装行业对款式设计的创新性要求越来越强烈,现有的服装CAD由于复杂的操作方式、孤立的设计流程及过高的专业要求限制了设计师灵感的捕捉及设计意图的展现,不能满足设计师在创意设计方面的需求。因此,研究三维服装款式创意设计方法对推动服装行业的创意设计具有重要意义。本文在分析现有服装CAD系统研究现状基础上,提出基于系列模板耦合的三维服装款式创意设计方法。通过基于语义模板、几何模板及约束模板的多重设计模板耦合实现衣身款式的草图式自由创意设计、部件款式的混合式借鉴创意设计及三维服装款式的编辑造型；通过基于人体特征与款式特征映射耦合的款式模板实现三维款式的重用；通过基于交互式遗传算法与款式信息耦合的遗传模板实现三维款式的创意进化。提出基于多重设计模板耦合的款式创意生成方法。分析三维服装款式的设计模式,提出语义模板、几何模板及约束模板耦合的多重设计模板。对于衣身款式的自由创意设计模式,采用三维草图勾绘的设计方法,提出草图设计中的几何语义、操作语义,基于语义模板以任意视线方向的三维草图交互方式进行自由创意设计；对于需要复杂造型的衣袖、衣领款式的借鉴创意模式,建立典型款式结构的几何模板,将几何模板中款式元素分为草绘元素和参数元素,通过草图交互获得草绘元素,通过特征提取获得参数元素,两者结合生成服装部件的三维款式。归纳款式元素间约束类型,建立约束模板,利用单款式线驱动及多款式线交互驱动方式,构建款式元素约束图,通过约束求解实现款式联动编辑造型。提出基于人体模板与款式模板耦合的款式快速重用方法。提取人体尺寸特征、体型特征与姿态特征建立人体模板,利用特征信息驱动人体模板快速变形；通过对三维服装款式的层次划分,建立款式元素的模板结构；利用款式元素与对应人体特征的映射关联,实现款式元素的特征编码；建立几何规则、顺序规则与碰撞规则,保障款式重用的正确性。款式模板保留了三维服装款式的造型特征及与人体特征的映射关系,将款式模板应用于其它个性人体时,根据人体特征,将模板信息解码为三维几何信息实现款式重用。提出基于款式模板与遗传模板耦合的款式创意进化方法。构建基于款式耦合层与遗传操作层的遗传模板。在款式耦合层建立适用于遗传操作的三维服装款式数据结构,建立三维款式部件库,提出基于款式指针的遗传算法编码方式,实现款式部件与遗传操作的信息耦合；将交互式遗传算法引入遗传操作层,改进针对款式部件的遗传操作,利用对款式部件分别评价的交互方式,准确获取用户对服装款式的适应度评价,指导款式进化过程,实现款式的创意进化。以本文的研究成果为技术核心,开发了三维服装款式设计原型系统,并集成于三维服装设计软件LookStailorX。利用该系统,给出了相关技术实例。更多还原

【Abstract】 With the competition in the garment industry becoming more intense, there is an increasing demand for garment style innovation. In existing garment CAD, because of the limitations such as complex operation, isolated design process and the high professional requirements, it is hard to catch design inspirations or to express design idea, so, the creative design demand can not be supported well. Therefore, to study the creative design method for garment style has important significance.Based on current research status of GCAD systems, this paper presented series templates coupling based 3D garment style creative design method. Three design templates called Semantic template, geometry template and constraint template are offered to generate and edit garment style in sketch based method or hybrid method. The garment style is reused by mapping the feature information between human template and garment style template. The garment style is evolved based on the coupling of genetic template and style template.A multi design templates based garment style generation method is proposed. By analyzing the 3D garment style design patterns, the design templates are constructed which included semantic template, geometric template and constrain template. The freeform creative design pattern is conducted in sketch method based on operation semantic and geometry semantic. The reference creative design pattern is conducted by establish the typical geometric template, and then the style is generated by the combination of sketch elements and parameter elements. We abstract constraints between the style elements to establish constrain template, then edit the garment style by solving the constraint graph.3D garment style reusing method based on the coupling of virtual human template and style template is proposed. The virtual human features of size, figure and posture are extracted and virtual human template is established. The virtual human template deformation method driven by human features is proposed. The garment style is divided into three levels to construct garment style template. Style elements are encoded by the relationship of human feature and garment style feature. The geometric rules, order rules and collision rules are established to make sure of the correctness of style reusing. Style template retains the feature of garment 3D shape and the mapping information on the human body. When style template is applied to other human, the template is decoded into geometry information to reconstruct garment according to the new virtual human features.A garment style evolution method based on the coupling of style template and genetic template is proposed. The genetic template is constructed of garment style coupling layer and genetic operation layer. In garment style coupling layer, we design data structure fitting for the 3D operation in genetic algorithm and establish the garment style library, a style component pointer based encode method is adopted to connect the information between 3D style and genetic operation. In genetic operation layer, the interactive genetic algorithm is adopted and genetic operation is improved. The use of interactive evaluation for each style component is more accurate to get fitness evaluation.Finally, the research results are applied into the 3D garment style design system LookStailorX. A lot of 3D garment style examples are presented.更多还原