About: Color Rendering Capacity (deleted 28 Apr 2008 at 11:29)   Sponge Permalink

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One way to deal with the concern of whether a given light source is capable of rendering a great number of widely different colors is to devise a measure such that with it people can tell exactly which one is the first among several sorts of light sources, which one is the next, and which one is the last according to the number of the colors which can be rendered by the source. Using a special arithmetic, people are able to calculate the maximum range or area occupied by the chromaticities which can be produced with a specified luminance factor Y under a given light source. All of these areas, each being associated with one specified luminance factor Y between 0.0 and 1.0, can be piled up to form a solid in a uniform color space. The volume of this color solid corresponds to the total numb

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  • Color Rendering Capacity (deleted 28 Apr 2008 at 11:29)
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  • One way to deal with the concern of whether a given light source is capable of rendering a great number of widely different colors is to devise a measure such that with it people can tell exactly which one is the first among several sorts of light sources, which one is the next, and which one is the last according to the number of the colors which can be rendered by the source. Using a special arithmetic, people are able to calculate the maximum range or area occupied by the chromaticities which can be produced with a specified luminance factor Y under a given light source. All of these areas, each being associated with one specified luminance factor Y between 0.0 and 1.0, can be piled up to form a solid in a uniform color space. The volume of this color solid corresponds to the total numb
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abstract
  • One way to deal with the concern of whether a given light source is capable of rendering a great number of widely different colors is to devise a measure such that with it people can tell exactly which one is the first among several sorts of light sources, which one is the next, and which one is the last according to the number of the colors which can be rendered by the source. Using a special arithmetic, people are able to calculate the maximum range or area occupied by the chromaticities which can be produced with a specified luminance factor Y under a given light source. All of these areas, each being associated with one specified luminance factor Y between 0.0 and 1.0, can be piled up to form a solid in a uniform color space. The volume of this color solid corresponds to the total number of the colors which can be rendered by the given sort of light source with one unit luminous flux. And a figure proportional to this volume has been taken as the measure searched for, and called the Color Rendering Capacity of a light source. To assist quick calculation of the color rendering capacity for any sort of light source, a software CRC99 has been available and can be downloaded from the web(color.rendering.tripod). References 1 Xu H., Color rendering capacity of illumination, J.Opt.Soc.Amer.,73,1709-1713(1983). 2 Xu H., Colour rendering capacity and luminous efficiency of a spectrum, Lighting Res.Technol., 25,131-132(1993).
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