D'Zmura M, Iverson G
Department of Cognitive Sciences, University of California, Irvine 92717.
J Opt Soc Am A Opt Image Sci Vis. 1993 Oct;10(10):2148-65. doi: 10.1364/josaa.10.002148.
Changing a scene's illuminant causes the chromatic properties of reflected lights to change. This change in the lights from surfaces provides spectral information about surface reflectances and illuminants. We examine conditions under which these properties may be recovered by using bilinear models. Necessary conditions that follow from comparing the number of equations and the number of unknowns in the recovery procedure are not sufficient for unique recovery. Necessary and sufficient conditions follow from demanding a one-to-one relationship between quantum catch data and sets of lit surfaces. We present an algorithm for determining whether spectral descriptions of lights and surfaces can be recovered uniquely from reflected lights.
改变场景的光源会导致反射光的色彩特性发生变化。来自表面的光的这种变化提供了有关表面反射率和光源的光谱信息。我们研究了使用双线性模型恢复这些特性的条件。在恢复过程中，通过比较方程数量和未知数数量得出的必要条件不足以实现唯一恢复。必要且充分的条件来自于要求量子捕获数据与被照亮表面集之间存在一一对应关系。我们提出了一种算法，用于确定是否可以从反射光中唯一地恢复光和表面的光谱描述。
