V2EX diffuse reflection

Diffuse Reflection

Definition / 定义

漫反射:光照到粗糙或不平整的表面后,向各个方向散射式反射的现象,因此从不同角度看通常都较均匀、不过分“发亮”(与镜面反射相对)。

Pronunciation / 发音

/dfjus rflkn/

Examples / 例句

Diffuse reflection makes paper look bright from any angle.
漫反射让纸张从几乎任何角度看起来都很亮。

In computer graphics, diffuse reflection is often modeled as Lambertian shading to approximate how matte surfaces scatter incoming light.
在计算机图形学中,漫反射常用朗伯着色来建模,以近似哑光表面对入射光的散射方式。

Etymology / 词源

diffuse 来自拉丁语 diffusus(“散开、扩散”);reflection 来自拉丁语 reflectere(“折回、反射”)。合起来强调“反射光不是集中成一束,而是向多方向扩散”。

Related Words / 相关词

Literary Works / 文学作品

  • Optics(Eugene Hecht)在反射与散射章节讨论漫反射与材料表面粗糙度的关系。
  • Principles of Optics(Max Born & Emil Wolf)以经典光学框架分析非理想表面的反射与散射。
  • Computer Graphics: Principles and Practice(Foley 等)在光照模型中介绍漫反射(含朗伯模型)的基础用法。
  • Physically Based Rendering: From Theory to Implementation(Pharr 等)在基于物理的材质/反射模型中系统使用漫反射概念。
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