基于Top-down建模机制的三维虚拟人快速建模方法  

3D virtual human rapid modeling method based on top-down modeling mechanism

作　　者：李涛涛[1] 方雄兵[1] 林锐[1] 陈捷捷[1] 

机构地区：[1]中国舰船研究设计中心,湖北武汉430064

出　　处：《中国舰船研究》2017年第1期38-44,共7页Chinese Journal of Ship Research

基　　金：中国舰船研究设计中心研发基金项目(YF15-03-47;YFA14-03-41)

摘　　要：为满足虚拟现实领域对不同角色三维虚拟人大量定制与快速建模的需要,系统性梳理虚拟人建模技术的研究现状及不足,提出一种基于自顶向下(Top-down)建模机制的三维虚拟人快速建模方法。在顶层实现虚拟人模型层次结构框架设计的基础上,逐级向下实现虚拟人模块化表达与各模块控制参变量设计,建立虚拟人各模块的接口与映射约束关系,完成尺寸与纹理参变量的定义,并形成支持虚拟人Top-down快速建模实践操作的标准化流程。最后,以中国籍船长角色的定制建模为例,进行Top-down建模机制下的虚拟人快速建模应用验证。由建模过程的能效性以及建模结果的视觉效果分析可知,基于Top-down机制的三维虚拟人快速建模方法及标准化流程高效、可行,可为三维虚拟人几何建模与纹理建模的实现提供新的建模思路与理念。Aiming to satisfy the vast custom-made character demand of 3D virtual human and the rapid modeling in the field of 3D virtual reality, a new virtual human top-down rapid modeling method is put forward in this paper based on the systematic analysis of the current situation and shortage of the virtual human modeling technology. After the top-level realization of virtual human hierarchical structure frame design, modular expression of the virtual human and parameter design for each module is achieved gradual-level downwards. While the relationship of connectors and mapping restraints among different modules is established, the definition of the size and texture parameter is also completed. Standardized process is meanwhile produced to support and adapt the virtual human top-down rapid modeling practice operation. Finally, the modeling application, which takes a Chinese captain character as an example, is carried out to validate the virtual human rapid modeling method based on top-down modeling mechanism. The result demonstrates high modelling efficiency and provides one new concept for 3D virtual human geometric mod- eling and texture modeling.

关 键 词：虚拟人 自顶向下 快速建模方法 模块化 参数化 

分 类 号：U662.9[交通运输工程—船舶及航道工程]