Dichromatic reflection models for a variety of materials
Dichromatic reflection models for a variety of materials
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适用于各种材料的二色反射模型
DOI：
10.1002/col.5080190408
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发表时间：
1994
影响因子：
1.4
通讯作者：
S. Tominaga
中科院分区：
文献类型：
--
作者：
S. Tominaga
本文提出了适合描述各种材料表面光谱反射率的双色反射模型。非均匀材料的标准双色反射模型假定从物体表面反射的光被分解成两个附加分量：体反射和界面反射，这与波长无关。首先，我们提出了一种基于表面光谱反射率观测来检验该标准模型的充分性的方法。标准的双色反射模型适用于许多材料。然而，测试结果指出，有一些衣服的标准模型是不够的，金属只有界面反射。接下来，我们将标准模型扩展为具有依赖于波长的界面反射分量。给出了一种估计广义模型中两个反射函数的算法。此外，为了近似金属的反射，定义了一个专门用于镜面反射的双色反射模型。用色度图分析了其反射特性。结果表明，大多数材料的表面光谱反射率可用三种类型的双色反射模型描述。©1994 John Wiley&Sons，Inc.
This article proposes dichromatic reflection models adequate for describing surface-spectral reflectances of a variety of materials. the standard dichromatic reflection model for inhomogeneous materials assumes that light reflected from an object's surface is decomposed into two additive components: the body reflection and the interface reflection, which is independent of wavelength. First, we present a method for testing the adequacy of this standard model based on the observations of surface-spectral reflectances. the standard dichromatic reflection model is adequate for many materials. However, the test results point out that there are some cloths for which the standard model is inadequate, and metals that have only the interface reflection. Next, we extend the standard model to have an interface reflection component that depends on wavelength. an algorithm is presented for estimating two reflectance functions in the generalized model. Moreover, a dichromatic reflection model specialized for only the specular reflection is defined for approximating metal's reflection. the reflection characteristics are analyzed using a chromaticity diagram. It is concluded that surfacespectral reflectances of most materials are described by three types of the dichromatic reflection model. © 1994 John Wiley & Sons, Inc.