The design and use of a cone chromaticity space: A tutorial

The design and use of a cone chromaticity space: A tutorial
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圆锥色度空间的设计和使用:教程

DOI:
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发表时间:
1996
期刊:
影响因子:
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通讯作者:
J. Pokorny
J. Pokorny
中科院分区:
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文献类型:
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作者:
V. Smith;J. Pokorny

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Judd修正的比色数据可以转换为Konig基本原理L、M、S,代表长波长(LWS)、中波长(MWS)和短波长(SWS)敏感锥光谱灵敏度。基本原理被归一化,使得两种锥类型M和L相加为发光效率函数YJ。在这个变换中,S基波的高度是不确定的。恒定亮度色度平面可以通过计算L/YJ和S/YJ导出,其中S的面积设置为等于YJ的面积。该色度空间便于计算真实的刺激。这个空间的轴,当调整到反映锥适应的等能谱已被证明是匹配的主要视网膜皮层处理流的零轴。相对视锥troland色度可以乘以视网膜照度水平以给出L、M和S troland。在该度量中,色度数据可以被绘制为阈值-vs.照度函数锥激励是从锥套中导出的,除以基本面的最大灵敏度。视锥细胞激发单元用于导出视网膜处理的模型。锥量子激发速率是锥激发的缩放版本。John Wiley & Sons,Inc.
Colorimetric data as revised by Judd can be transformed to Konig fundamentals L, M, S, representative of the long-(LWS), middle-(MWS), and short-(SWS) wavelength sensitive cone spectral sensitivities. The fundamentals are normalized so that two cone types, M and L, sum to the luminous efficiency function, YJ. The height of the S fundamental is undefined in this transformation. A constant luminance chromaticity plane can be derived by calculating L/YJ and S/YJ, with the area of S set equal to that of YJ. This chromaticity space is convenient for calculations of real stimuli. The axes of this space, when adjusted to reflect cone adaptation to the equal-energy spectrum have been shown to match the null axes of the major retino-cortical processing streams. The relative cone troland chromaticities can be multiplied by the retinal illuminance level to give L, M, and S trolands. In this metric, chromaticity data can be plotted as threshold-vs.-illuminance functions. Cone excitation is derived from cone trolands, by dividing by the maximal sensitivity of the fundamentals. Cone excitation units are used to derive models of retinal processing. The cone quantal excitation rate is a scaled version of the cone excitation. © 1996 John Wiley & Sons, Inc.