DISCRIMINATION INFORMATION IN NATURAL RADIANCE SPECTRA
DISCRIMINATION INFORMATION IN NATURAL RADIANCE SPECTRA
复制标题
自然辐射光谱中的歧视信息
DOI：
10.1142/9789812831200_0005
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发表时间：
1995
期刊：
影响因子：
1.8
通讯作者：
W. Geisler
中科院分区：
文献类型：
--
作者：
W. Geisler
视觉是基于检测和识别从不同方向到达眼睛或相机的辐射光谱的差异。辐射光谱可以在总辐射（强度）、形状（颜色）或两者上不同。理想观察者理论被用来测量强度和色度信息的相对量，这些信息可用于区分通过用天然日光源（D 65）照射自然表面（Krinov，1947）而产生的自然辐射光谱对。两个理想的观察者进行了评估-一个在眼睛或相机的输入操作，一个在人类视锥光感受器中的色素水平。在每个辨别对中的强度和色度信息的相对量通过由色度信息引起的对比度的有效增加来量化。分析表明，彩色信息在输入到眼睛的有效对比度平均增加30%至70%，但在色素水平上仅增加5%至10%。看来，在自然辐射光谱中的许多色彩信息在角膜和色素之间丢失，并且为了区分区域或检测区域边界的目的，在色素水平处可用的色彩信息相对于强度信息通常较小。
Vision is based upon detecting and identifying differences in the radiance spectra arriving at the eye or camera from different directions. Radiance spectra can differ in total radiance (intensity), in shape (color), or both. Ideal-observer theory was used to measure the relative amounts of intensity and chromatic information available to discriminate pairs of natural radiance spectra created by illuminating natural surfaces (Krinov, 1947) with a natural daylight source (D65). Two ideal observers were evaluated -- one operating at the input to the eye or camera, and one at the level of the photopigments in the human cone photoreceptors. The relative amount of intensity and chromatic information in each discrimination pair was quantified by the effective increase in contrast due to the chromatic information. The analyses showed that chromatic information increases the effective contrast by an average of 30% to 70% at the input to the eye, but only by 5% to 10% at the level of the photopigments. It appears that much of the chromatic information in natural radiance spectra is lost between the cornea and photopigments, and that the chromatic information available at the level of the photopigments, for the purpose of discriminating between regions or detecting region boundaries, is usually small relative to intensity information.
单个神经元的辨别性能：速率和时间模式信息。
影响因子：
2.5
作者：
Geisler,WS;Albrecht,DG;Salvi,RJ;Saunders,SS
通讯作者：
Saunders,SS
敏锐度和超敏锐度的物理极限。
DOI：
10.1364/josaa.1.000775
发表时间：
1984
期刊：
Journal of the Optical Society of America. A, Optics and image science
影响因子：
--
作者：
Geisler,WS
通讯作者：
Geisler,WS