Color signals in natural scenes: characteristics of reflectance spectra and effects of natural illuminants
Color signals in natural scenes: characteristics of reflectance spectra and effects of natural illuminants
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DOI：
10.1364/josaa.17.000218
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发表时间：
2000-02-01
影响因子：
1.9
通讯作者：
Osorio, D
中科院分区：
文献类型：
--
作者：
Chiao, CC;Cronin, TW;Osorio, D
从森林和珊瑚礁收集的自然场景的多光谱图像代表了现代动物可能看到的典型的、复杂的场景。通过主成分分析对这些场景中的反射光谱和建模的视觉颜色信号进行了光谱去相关。对于森林和珊瑚礁场景，近98%的反射光谱和颜色信号的方差可以用前三个主成分来描述，这意味着三个设计良好的视觉通道可以恢复自然场景的几乎所有光谱信息。各种自然光源对森林景物的颜色信号影响很小，但由于水对光的吸收而引起的环境辐射光谱的变化对珊瑚礁景物的光谱特性有很大的影响。(C)2000年美国光学学会。[S0740-3232(00)01802-0]OCIS编码：330.1720、120.5630、120.5700、110.4190、100.2960。
Multispectral images of natural scenes were collected from both forests and coral reefs to represent typical, complex scenes that might be viewed by modern animals. Both reflectance spectra and modeled visual color signals in these scenes were decorrelated spectrally by principal-component analysis. Nearly 98% of the variance of reflectance spectra and color signals can be described by the first three principal components for both forest and coral reef scenes, which implies that three well-designed visual channels can recover almost all of the spectral information of natural scenes. A variety of natural illuminants affects color signals of forest scenes only slightly, but the variation in ambient irradiance spectra that is due to the absorption of light by water has dramatic influences on the spectral characteristics of coral reef scenes. (C) 2000 Optical Society of America. [S0740-3232(00)01802-0] OCIS codes: 330.1720, 120.5630, 120.5700, 110.4190, 100.2960.