CBS Color-Television Staging and Lighting Practices

O'Brien, Richard S.

doi:10.5594/j04869

Cited by 7 publications

(2 citation statements)

References 5 publications

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“…Here, we first consider the simplest system, one which superimposes three colored light sources whose intensity can be individually controlled. Color television [46][47][48][49][50] represents the most widely known instance. The light sources in this case are the phosphor dots on the screen whose intensity is controlled by the current in the incident electron beam.…”

Section: A System Which Uses Superimposed Controlled Light Sourcesmentioning

confidence: 99%

“…Unfortunately, there is a further constraint: at the extremes of the visible region of the spectrum, the eye is relatively insensitive, and large light-source intensities are needed to produce given stimulation levels. For this reason, the phosphors used in color television represent a compromise between a desire to cover as large a gamut of stimulation levels as possible and the need to produce adequate screen brightness [48,50].…”

Section: Constraints On Image Generator Control Inputsmentioning

confidence: 99%

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Exact reproduction of colored images

Horn¹

1983

Computer Vision, Graphics, and Image Processing

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The problem of producing a colored image from a colored original is analyzed. Conditions are determined for the production of an image in which the colors cannot be distinguished form those in the original by a human observer. If the final image is produced by superposition of controlled amounts of colored lights, only a simple linear transform need be applied to the outputs of the image sensors to produce the control inputs required for the image generators. In systems which depend instead on control of the concentration or the fractional area covered by colored dyes, a more difficult computation is called for. This calculation may for practical purposes be expressed in table lookup form. The conditions for exact reproduction of colored images should prove useful in the design and analysis of image processing systems whose final output is intended for human viewing. Judging by the design of some existing systems, these rules are not generally known or adhered to. Modem computational techniques make it practical to tackle this problem now. Adherence to design constraints developed here is of particular importance where colors are to be judged when the original is not directly accessible to the observer as, for example, when it is on another planet.

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Section: A System Which Uses Superimposed Controlled Light Sourcesmentioning

confidence: 99%

Section: Constraints On Image Generator Control Inputsmentioning

confidence: 99%