Performance Testing of Color-difference Formulas Using Their Acceptability Dataset

Komatsubara, Hitoshi

doi:10.2150/jieij1980.87.5_293

Cited by 4 publications

(1 citation statement)

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“…e chroma, C, of samples did not change in HHS but gradually decreased in LHS with increasing storage duration (Figure 3(b)). Komatsubara investigated the acceptability values of some color parameters for human [16] and showed that the ΔE can be used as an index of the allowable color differences for the visual perception. erefore, it was assumed that the visual changes of samples in HHS were inhibited compare to that of LHS.…”

Section: Changes In Color Properties Figures 3(a) and 3(b)mentioning

confidence: 99%

Estimation of Changes in Mechanical and Color Properties from the Weight Loss Data of “Shine Muscat” Fruit during Storage

Watanabe

Nakamura

Ota

et al. 2018

Journal of Food Quality

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“Shine Muscat” fruit is a table grape commonly consumed cultivar in Japan; however, the storage characteristics have not been investigated, especially physical properties. The objective of this study was to clarify changes in weight loss, mechanical, and color properties of Shine Muscat fruit during storage and the relationships between them. The storage tests were performed at 15°C under two relative humidity (RH) conditions, i.e., RH 95% and RH 40%. The weight loss of fruit was calculated from the mass changes during storage. The mechanical properties—stress, strain, and elasticity—at the break point were examined by compression tests. The color properties, color differences (ΔE), and chroma (C) were calculated from L∗a∗b∗ scale parameters. The breaking stress did not reflect changes in the mechanical characteristics of samples during storage. Weight loss was highly correlated with the breaking strain and elasticity, ΔE, and C. In addition, the physical properties could be estimated from weight loss data (R2 = 0.81–0.94). We showed the changes in weight loss and other physical properties and proposed equations to estimate the physical properties based on weight loss data. The equations indicated the importance of inhibiting the weight loss to maintain the quality and could be used as a nondestructive and easy method for assessment of storage characteristics of Shine Muscat fruit.

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Section: Changes In Color Properties Figures 3(a) and 3(b)mentioning

confidence: 99%

Estimation of Changes in Mechanical and Color Properties from the Weight Loss Data of “Shine Muscat” Fruit during Storage

Watanabe

Nakamura

Ota

et al. 2018

Journal of Food Quality

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Comparative Study on Required Bit Depth of Gamma Quantization for Digital Cinema Using Contrast and Color Difference Sensitivities

Suzuki

Furukawa

2013

IEICE Trans. Fundamentals

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A specification for digital cinema systems which deal with movies digitally from production to delivery and projection on the screens is recommended by DCI (Digital Cinema Initiative), and systems based on this specification have been developed and installed in theaters. The parameters of the systems that play an important role in determining image quality include image resolution, quantization bit depth, color space, gamma characteristics, and data compression methods. This paper comparatively discusses a relation between required bit depth and gamma quantization using both of a human visual system for grayscale images and a color difference model for color images. The required bit depth obtained from a contrast sensitivity function against grayscale images monotonically decreases as the gamma value increases, while it has a minimum value when the gamma is 2.9 to 3.0 from CIE 1976 L * a * b * color difference model. It is also shown that the bit depth derived from the contrast sensitivity function is one bit greater than that derived from the L * a * b * color difference model at the gamma value of 2.9.

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Comparison of Perceived Colour Differences with Colorimetric Colour Differences in Uniform Colour Spaces and Colour Appearance Model

Nakayama

Ito

2004

J. Light & Vis. Env.

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Performance Testing of Color-difference Formulas Using Their Acceptability Dataset

Cited by 4 publications

References 0 publications

Estimation of Changes in Mechanical and Color Properties from the Weight Loss Data of “Shine Muscat” Fruit during Storage

Estimation of Changes in Mechanical and Color Properties from the Weight Loss Data of “Shine Muscat” Fruit during Storage

Comparative Study on Required Bit Depth of Gamma Quantization for Digital Cinema Using Contrast and Color Difference Sensitivities

Comparison of Perceived Colour Differences with Colorimetric Colour Differences in Uniform Colour Spaces and Colour Appearance Model

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