Results 251 to 260 of about 79,092 (294)

Hilbert transform pairs oforthonormal bases of chromatic-scale wavelets

2017 International Conference on Wavelet Analysis and Pattern Recognition (ICWAPR), 2017
We have already proposed the orthonormal basis of wavelets having customizable frequency bands and its Hilbert transform pair. In this paper, based on them, we propose an orthonormal basis of chromatic-scale wavelets and its Hilbert transform pair. This basis is designed based on a new type of chromatic scale and its Hilbert transform pair achieves ...
Hiroshi Toda, Zhong Zhang
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The use of uniform chromaticity scales

Proceedings of the Physical Society, 1940
The C.I.E. trichromatic system is capable of modification to a similar system of three coordinates in which a diagram of colours has the property that the distance between the points representing two colours is approximately proportional to the subjective colour-difference. It is shown that a similar effect can be obtained by a distortion of the C.I.E.
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Uniform-scale chromaticity diagrams: Opponent-chromatic responses as logarithms of the cone-activation ratios

Color Research & Application, 1998
Chromatic-response functions and a uniform-scale chromaticity diagram are derived by assuming that normal trichromatic vision is obtained by combining tritanopic and deuteranopic vision. Two different opponent-chromatic mechanisms can be related to these two dichromatic visions.
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Uniform-scale chromaticity diagram by logarithmic transformations

Il Nuovo Cimento D, 1994
Von Kires invariant chromatic-response functions are derived by a proper angular hypothesis related to the opponent chromatic processes.
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Chromatic and Harmonic Scales for Intuitive Sonographic Compositions

Proceedings of the 11th edition of the International Workshop on Smalltalk Technologies, 2016
Historically, sonographic representations of sounds are based on two types of scales: linear or logarithmic (Xenakis, 1971; Roads, 1995; Lesbros, 1995, 1996; Xiaoying, 2008). These two kinds of scales introduce beats between sounds produced by adjacent lines of the image.
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Chromatic Scale

JAMA, 2022
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Uniform-scale chromaticity diagram with angular coordinates in zero-curvature space

Journal of the Optical Society of America A, 1991
Dichromats have angular color discrimination in the usual chromaticity diagrams. Normal trichromatic vision is obtained by combining tritanopic and deuteranopic vision. In this paper, a new pair of angular variables is introduced from which, by a suitable transformation, a uniform-scale chromaticity diagram in zero-curvature space is obtained.
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Nonlinear Relations of Psychometric Scale Values to Chromaticity Differences*

Journal of the Optical Society of America, 1963
Psychometric scale values for color differences are correlated with physically measured chromaticity differences by use of a formula which postulates that the scale values are proportional to some power, less than unity, of distance in a subjectively isotropic, projective transformation of the CIE chromaticity diagram.
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Color Differences in a Deuteranope Scaled by Chromatic Modulation Sensitivity

1989
The sensitivity of a deuteranope to chromaticity differences was measured using evoked cortical potential (VECP) and psychophysical methods used previously with color-normal subjects. The chromatically modulated spatial stimuli contained two equally bright interdigitated sine wave gratings of monochromatic light.
Karen A. Manning, Kenneth Knoblauch
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A Bioinspired Retinomorphic Device for Spontaneous Chromatic Adaptation

Advanced Materials, 2022
Tan Yinlong, Yabo Chen, Tian Jiang
exaly