Patent
1992-03-09
1995-06-20
Jankus, Almis R.
395131, G06T 500
Patent
active
054267242
ABSTRACT:
In order to improve the contrast of a synthetic image generator, the usually implemented operations of luminance compression are eliminated. Instead, a computation of true luminosity is made and the function of adaptation of the eye is included by computing the true output light energy. Then, the video components of the signal are sent to a display system and are standardized as a function of the light energy of the image displayed and the possible range of the image display. The method includes producing images with a luminance range substantially equal to the true luminance range of an eye and sending this signal to the display system. The signal is varied for different images at a time equal to the time an eye adjusts to different images. The apparatus includes a main channel being corrected by a computing circuit, having a peak luminance extraction circuit and a light energy computing circuit for generating a luminance correction signal.
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Jankus Almis R.
Thomson - CSF
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