Color Television and Colorimetry

Wintringham, W. T.

doi:10.1109/jrproc.1951.273777

Cited by 83 publications

(7 citation statements)

References 61 publications

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“…On this diagram, the outer curve and straight line represent the locus of fully saturated spectrum colours and the purples (i.e. it encloses all real colours), and the dotted line represents the boundary locus within which lie the gamut of the colours seen in everyday life, which can be depicted by the use of pigments, dyes and inks (Wintringham, 1951). The colour names indicated on the various areas of the chart are those due to Kelly (1943).…”

Section: Resultsmentioning

confidence: 99%

Colours Experienced in Dreams

Padgham

1975

British J of Psychology

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Colours seen in dreams by six observers were recorded from memory and plotted on a CIE u, v, chromaticity diagram. Only about half the dreams recorded contained colour, and in those in which colour appeared the more saturated purples, blues and blue greens were absent. It is suggested that during achromatic dreams the areas of the visual cortex which seem to respond only to colour may be inoperative. The paucity of blue in dreams could be anatomically related to the small population of blue units in the colour areas of the cortex.

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Section: Resultsmentioning

confidence: 99%

Colours Experienced in Dreams

Padgham

1975

British J of Psychology

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“…The first real colour gamut was derived in 1951 by Wintringham and published in a tutorial paper on colour television and colorimetry. The gamut was derived from four sets of data: the Munsell Book of Color, the Ostwald Color Atlas, the Textile Color Card Association and a set of printing inks.…”

Section: Available Real Colour Gamutsmentioning

confidence: 99%

Comparison of real colour gamuts using a new reflectance database

Luo

Pointer

et al. 2013

Color Research & Application

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A large set of data, comprising the spectral reflectances of real surface colours, has been accumulated. The data comprise 16 groups with different materials and include 85,879 measured spectra. From these data, CIELAB colorimetric coordinates were calculated under CIE illuminant D50 and the CIE 1931 standard colorimetric (2°) observer. Several published colour gamuts including those developed by Pointer and ISO reference colour gamut [ISO Graphic Technology Standard 12640‐3:2007] were compared using the present data set. It was found that the Pointer gamut is smaller than the new real data in most of the colour regions. The results also showed that the ISO reference colour gamut is larger than the new real accumulated data in most regions. The present finding indicates that there is a need to derive a new colour gamut based on the newly accumulated data for common applications. © 2013 Wiley Periodicals, Inc. Col Res Appl, 39, 442–451, 2014

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“…Considering that the HVS is more sensitive to luminance and due to display color gamut limitations [12], the lightness L * of the resulting image always remained unchanged (L * ei = L * i ) in the equation (1) for all the image pixels. Nevertheless, due to the color gamut of the display device some pixel colors cannot be represented.…”

Section: Database Manipulationmentioning

confidence: 99%

Objective evaluation of chromatic quality assessment

Bernardo

Pinheiro

Pereira

et al. 2013

2013 IEEE International Conference on Multimedia and Expo (ICME)

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This paper provides a study on the ability of Full-Reference quality metrics to measure the Quality of Experience that results on images that suffer chromatic errors. Considering this, the well known PSNR, MSSIM and VIFP will be compared with the MOS results. It is important to highlight that these measures are usually applied to the image luminance channel. However, in this study only the chromatic components of the image represented in the CIELAB color space have been changed resulting in similar values of luminosity. Moreover, the CIEDE2000 was also considered, because the knowledge of the scene illuminant allows a reliable computation. Using correlation estimates it was concluded that the CIEDE2000 and the MSSIM provides the best MOS estimation. The MSSIM results in a slightly better Pearson correlation value while the CIEDE2000 results in a better RMSE and Outlier Ratio. The VIFP also provides a good correlation, while the PSNR shows a poor correlation with the MOS values.

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Color Television and Colorimetry

Cited by 83 publications

References 61 publications

Colours Experienced in Dreams

Colours Experienced in Dreams

Comparison of real colour gamuts using a new reflectance database

Objective evaluation of chromatic quality assessment

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