一种基于样本的人体躯干函数模型

An Example-Based Approach to Function Model of Human Trunk

针对参数化静态人体躯干模型的参数量化比较困难、应用过程繁复的状况,建立了一种基于样本的人体躯干函数化模型。该模型使用身高、围度长度和围度宽厚信息等输入参数作为控制量,以获得的样本B样条曲线簇为模板,根据人体各部位比例确定曲线空间位置,利用放样曲面重建算法生成人体躯干模型的三维可视化曲面。建立的人体躯干模型包含了真实的人体躯干围度形态和宽厚信息,且这些尺寸信息容易获取、计算量小、建模速度快;根据输入的人体尺寸信息,对围度曲线模板进行相应的线性缩放或者全向加权约束调整,生成符合用户体型的人体躯干模型。

Since the control parameters of general human trunk models are hard to be quantified and thus complex to use,we discuss an example-based model to human trunk＇s function,in which a precision trunk model is generated by inputting height,circumference,width and thickness of a human body.Starting from the obtained cluster of B-Spline curves as templates,our model can be used to compute human trunk circumferences.A fast 3D human trunk render is designed with Loft Modeling Algorithm.The runtime modeling process is suitable of most applications,with only a few control parameters required.The model can also be tuned by linear scaling or weighted adjustment with circumference template of examples.