These geometry images are then sent to the image processing toolboxes for varaints of filtering effects . 3d filtered models can be created via reconstruction from these filtered images 在纹理造型方面,针对传统的三维彩绘技术利用纹理映射和参数化方法的缺陷,提出一种新颖的数据表示以实现在任意三角网格模型上直接进行三维彩绘。
Thirdly , the connection between bezier curves and surfaces and their bbc forms is gained . it is not hard to conclude that the bbc representation of curves and surfaces is the extensive form of bezier curves and surfaces 6 )基于bsc和bbc理论的曲线曲面的重新参数化方法以及相应的重新参数化方法在曲线曲面求交处理中的应用,这是本文的重点内容之五。
In general ug platform , applying the standardization and parameterization methods to the design of automobile cover drawing die , the design time will be reduced greatly , which achieves the fast response manufacture 摘要根据汽车覆盖件模具设计的工艺,在ug平台上将标准件技术和参数化方法应用于汽车覆盖件模具的设计中,能够大大地缩短传统覆盖件模具设计的周期,达到决速响应制造。
The procedures for data processing and supplements of missing data are discussed . the skeletal and flesh subsystems and their geometric representations are established parametrically , which have functions of real - time manipulations and realistic appearance of human models 以参数化方法建立了人体模型骨骼体系和体表体系及其几何表达方法,对整个脊柱、锁关节和肩关节等处作了较复杂的建模,并兼顾了人体模型的实时操纵性和外观真实性。
In this paper , brief summary and contrast for the analytical methods of arch dam were conducted , the visualization and parameterization of fem , and its implementation were investigated , and the system based on ansys , for the simulation fem analysis of arch dam was developed . and 3 - d nonlinear fem simulation analysis was then carried out for niutoushan arch dam , which is located in shouning county , fujian province of china 本文对拱坝的分析方法做了总结对比,研究了有限元分析中的可视化、参数化方法及它们实施技术,开发了基于ansys平台的拱坝有限元仿真分析系统,并结合实际工程对福建省寿宁县境内牛头山水电站双曲拱坝进行了三维非线性有限元整体稳定仿真分析。
The system depends on the features of rapidness , simplicity , driving by parameter and fitting for designers ’ habits and blends the size parameter into data structure and by using the driving technology realizes the drawing of single and double track lines of inter - station and the plane arrangement maps of station contact net 该系统依赖参数化方法所具备的快速、简洁、参数驱动、符合设计者习惯等特性,将尺寸参数融入到数据结构中,利用尺寸驱动技术实现尺寸约束,实现区间单、复线和站场接触网平面布置图的绘制。
Some important problems will be mainly discussed in this paper , including : the formation and representation of bsc , bbc , tbsc , tbbc curves and surfaces , some significant properties and corresponding algorithm , the expression of normal curves and surfaces in the form of bsc , bbc , tbsc , tbbc , the methods of the reparametrization of curves and surfaces based on the theory of bsc , bbc , tbsc , tbbc curves and surfaces , the application of the theory of bsc , bbc , tbsc , tbbc curves and surfaces in the reparametrization of curves and surfaces and practical modeling 3 )函数的概念,并建立了bsc 、 bbc和tbsc 、 tbbc曲线曲面的系统理论。主要研究bsc 、 bbc和tbsc 、 tbbc曲线曲面的构造、表示、性质,特征、算法;常用曲线曲面的bsc 、 bbc表示;基于bsc 、 bbc理论的曲线曲面的重新参数化方法; bsc 、 bbc理论在曲线曲面的重新参数化和实体造型中的应用。论文分为六个主要部分。
In chapter 3 , we discuss a novel parametric curve representation scheme on 1d manifold in - depth . all construction and design techniques for parametric curves , such as basis function design , parameterization , and local features control etc . are discussed in detail . a new construction method for conic curve is also presented 对于广义有理参数曲线,我们在第三章中对它的基函数设计、参数化方法、浙江大学博士学位论文局部控制和局部特征设计等各个构造和设计环节进行了详细的讨论,并提出了新的二次曲线的精确构造方法。
A one - dimensional oceanic mixed layer model with the m - y level - 2 . 5 turbulence closure schemes is employed . the rate of energy loss by breaking waves is estimated by parameterization and incorporated into the model as a source of turbulence kinetic energy ( tke ) by modifying the existing surface boundary condition of tke equation . the velocity field and turbulence energy budget are calculated under different forcing conditions ( the results given below are for a wind speed of 20 m / s . ) 采用一维2 . 5阶湍封闭混合层模式,根据参数化方法对波浪破碎导致的能量耗散率进行了估计,通过改变湍动能方程的上边界条件引入波浪破碎对湍动能生成的影响,计算了不同风应力强迫下的混合层流场结构和湍能量收支(下述给出的结果是取风速为20m s得到的) 。