A Uniform and Hue Linear Color Space for Perceptual Image Processing Including HDR and Wide Gamut Image Signals

Safdar, Muhammad; Luo, Ming Ronnier; Cui, Guihua; Kim, Youn Jin

doi:10.2352/issn.2169-2629.2017.25.264

Cited by 2 publications

(8 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Let

A

be the average area of all ellipses. The global uniformity (GU) measure 31 is defined as the STRESS value between

{italicπα}_{i} β_{i}

and

A_{i} = A

, with

i = 1, 2, \dots, n

, that is,

GU = f_{STRESS} (({}, {πα}_{i} β_{i}), ({}, A_{i}))

. In a uniform color space, all the ellipses should be circles with the same area, and therefore the GU measure for such a space should be zero.…”

Section: Proposed Uniform Color Spaces Based On Cieluvmentioning

confidence: 99%

“…In a uniform color space, all the ellipses should be circles with the same area, and therefore the GU measure for such a space should be zero. The local uniformity (LU) measure 31 is also defined in terms of the STRESS value, considering

α_{i} / β_{i}

and

r_{i} = 1

with

i = 1, 2, \dots, n

, that is,

LU = f_{STRESS} (({}, α_{i} / β_{i}), ({}, r_{i}))

. In a uniform color space, the ellipses should be circles, all ratios

α_{i} / β_{i}

should be equal to 1, and therefore the LU measure should be zero.…”

Section: Proposed Uniform Color Spaces Based On Cieluvmentioning

confidence: 99%

“…While CAM16‐UCS seems to show a nice uniformity, it is not easy to draw accurate conclusions from only a visual comparison of the six plots in Figures 2 or 3. Objective measures to quantify the uniformity of the color spaces mentioned are needed, and in this paper we used the local uniformity measure (LU) and the global uniformity measure (GU) 29,31 . The lower the values of LU or GU, the higher the uniformity.…”

Section: Performances Of the New Color Spaces Mluv Mluv1 And Mluv2mentioning

confidence: 99%

“…26 In addition, it was also found in Reference [29] that for MacAdam's ellipses 30 the new uniform chromaticity scales, u 0 m , v 0 m , (see Equation 11) performed much worse than the original uniformity chromaticity scales, u 0 , v 0 , in terms of the global uniformity (GU) measure, although u 0 m , v 0 m outperformed u 0 , v 0 in terms of the local uniformity (LU) measure. 31 Let α i and β i , i ¼ 1, 2, …, n, be the major and minor axes of the ith ellipse in a given color space. Thus, πα i β i is the area of the i th ellipse.…”

Section: Proposed Uniform Color Spaces Based On Cieluvmentioning

confidence: 99%

“…Let A be the average area of all ellipses. The global uniformity (GU) measure 31 is defined as the STRESS value between πα i β i and…”

Section: Proposed Uniform Color Spaces Based On Cieluvmentioning

confidence: 99%

See 4 more Smart Citations

Improvements to the CIELUV color space

Yang

Melgosa

et al. 2023

Color Research & Application

View full text Add to dashboard Cite

Three new approximately uniform color spaces named MLUV, MLUV1, and MLUV2 were developed by modifying CIELUV lightness, chromaticity coordinates, and color coordinates, respectively. Performance tests using the combined and four individual datasets employed at CIEDE2000 development showed that MLUV, MLUV1 and MLUV2 were significantly better than CIELUV. Using values of Standardized Residual Sum of Squares (CIE 217:2016) for predictions of the four individual datasets the ranking (from best to worst) was MLUV, MLUV2 and MLUV1, but for predictions of two ellipses datasets the ranking (from best to worst) was MLUV2, MLUV, and MLUV1. Overall, the MLUV2 space was found to be the best. Hence, it is expected that MLUV2 could be used for color specification and color difference evaluations, especially in industrial applications that depend on additive light mixing, such as color TV sets, video monitors, and lighting.

show abstract

“…Let

A

be the average area of all ellipses. The global uniformity (GU) measure 31 is defined as the STRESS value between

{italicπα}_{i} β_{i}

and

A_{i} = A

, with

i = 1, 2, \dots, n

, that is,

GU = f_{STRESS} (({}, {πα}_{i} β_{i}), ({}, A_{i}))

. In a uniform color space, all the ellipses should be circles with the same area, and therefore the GU measure for such a space should be zero.…”

Section: Proposed Uniform Color Spaces Based On Cieluvmentioning

confidence: 99%

α_{i} / β_{i}

and

r_{i} = 1

with

i = 1, 2, \dots, n

, that is,

LU = f_{STRESS} (({}, α_{i} / β_{i}), ({}, r_{i}))

. In a uniform color space, the ellipses should be circles, all ratios

α_{i} / β_{i}

should be equal to 1, and therefore the LU measure should be zero.…”

Section: Proposed Uniform Color Spaces Based On Cieluvmentioning

confidence: 99%

Section: Performances Of the New Color Spaces Mluv Mluv1 And Mluv2mentioning

confidence: 99%

Section: Proposed Uniform Color Spaces Based On Cieluvmentioning

confidence: 99%

“…Let A be the average area of all ellipses. The global uniformity (GU) measure 31 is defined as the STRESS value between πα i β i and…”

Section: Proposed Uniform Color Spaces Based On Cieluvmentioning

confidence: 99%

See 3 more Smart Citations

Improvements to the CIELUV color space

Yang

Melgosa

et al. 2023

Color Research & Application

View full text Add to dashboard Cite

show abstract

Detection and Correction of Errors in Psychophysical Color Difference Munsell Re-renotation Dataset

Nikolaev,

Basova,

Usaev

et al. 2023

lim

View full text Add to dashboard Cite

The Munsell dataset holds a prominent position in the field of color science. This dataset describes large color differences covering a wide color gamut, making it highly valuable for the development of color models. Currently, the widely used version is the Munsell Renotation, which is the second version of the dataset. In this paper, we analyze the third version, known as the Munsell Re-renotation, identify significant errors within it, and provide corrections for obvious typos. We propose a novel method for detecting nonuniformities, utilizing the L 1 -STRESS measure and the proLab uniform color space (UCS). Our findings demonstrate that the revised version of the Munsell Re-renotation dataset achieves significantly better consistency with established UCSs compared to the original Munsell Re-renotation data. Additionally, we discuss modifications of the STRESS measure for data with unknown scales. Unlike previous modifications, the proposed measure, ST RESS group , is identical to the classic STRESS measure when the scales are the same.

show abstract

A Uniform and Hue Linear Color Space for Perceptual Image Processing Including HDR and Wide Gamut Image Signals

Cited by 2 publications

References 0 publications

Improvements to the CIELUV color space

Improvements to the CIELUV color space

Detection and Correction of Errors in Psychophysical Color Difference Munsell Re-renotation Dataset

Contact Info

Product

Resources

About