1) the principium of light lighting models
光照明模型原理
2) illumination model
光照明模型
1.
Illumination factor template based on a classic illumination model and random noise function were adopted to.
用多段拼接的低次贝塞尔曲线构造花式纱线的形态轮廓,在形态轮廓区域内及其附近添加基于光照明模型的光照明因子模板和随机噪声函数表现纱线的材质,纱线的配色在色调、亮度、饱和度(huel、uminance、saturation,HLS)颜色模型中进行,可以单色平铺和多色渐变。
2.
The magnetic field is visualized by Phong illumination model through designed material hue and normal vector in every flux tubes images pixel.
本文在正弦函数调制的灰度位势图的基础上,利用磁通量管和凹凸映射的概念,提出了一种用于显示磁场的光照明模型。
3) local shading model
局部光照明模型
4) Global Illumination Model
整体光照明模型
5) shading/texturing model
光照纹理模型
1.
The calculating processes of texture mapping, such as surface modeling, mapping relationship defining and shading/texturing model creating, etc.
介绍了二维纹理图像对三维曲面的映射原理,论述了产生三维着装效果的诸如曲面建模、映射关系确定、光照纹理模型建立等纹理映射的计算过程。
6) light model
光照模型
1.
As an important part of CAD for woven fabric,the simulation technique of woven appearance has received due attention and research,and some mature techniques have come into being,which can be classified into three categories: color matching model-based method,yarn designing-based method,and geometrical model and light model-based method.
作为织物CAD的重要组成部分,织物外观仿真技术得到了足够的重视和研究,形成了一些相对比较成熟的模拟方法,这些仿真方法可归为3类:配色模纹法、基于纱线设计的织物外观模拟法、基于织物几何结构和光照模型的织物外观模拟法。
2.
In order to improve the quality of the 3D medical image reconstructed via Shear-Warp,an improved pre-integrated volume rendering(IPVR) algorithm based on Shear-Warp is proposed,in which the volume rendering equation and the light model are adopted to determine the final re-sampling value and to construct an intermediate image.
该算法采用预合成体绘制技术,在重采样过程中,结合体绘制方程和光照模型,确定最终的重采样值并合成中间图像,从而消除标准Shear-Warp算法中因欠采样而产生的混淆现象。
3.
The colors and the opacity of voxels in transfer function should be assigned in order to display hide interfaces (the interface of inner different mediums) in objects by direct volume rendering based on the general volume light model.
在普通的体光照模型下,使用直接体绘制显示对象内部的隐含分界面(内部不同介质之间的分界面),需要改变传递函数,确定体素的颜色值和不透明度。
补充资料：侧光照明
侧光照明指光源方向和摄像机光轴成90度的照明形式。其照明特点是被照明对象明暗各半。五种调子明显：高光、亮、暗、次暗及明暗交界线。画面层次丰富，立体感强。使用侧光要注意光比，光比不能太大，要控制在摄像允许的范围之内，照明人物，避免阴阳脸，表现有个性的人物常用侧光，比如《香魂女》中女主人公大多用侧光照明。侧光照明对粗糙表面质地能很好地表现出来。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条