METHODS FOR DETERMINING PARAMETER OF ADJUSTMENT CURVE OF TONAL RANGE AND METHODS FOR SELECTING ILLUMINATION LEVEL OF DISPLAY LIGHT SOURCE

摘要

FIELD: information technology.;SUBSTANCE: histogram calculation process calculates an image histogram. A distortion module uses the histogram value and distortion weight in order to determine distortion characteristics for various backlight illumination levels, and then selects the backlight illumination level which lowers or minimises the calculated distortion. After selecting the backlight illumination level, the backlight signal is filtered by a time filter in a filtration module. A Y-amplification projecting module is used to determine the image compensation process. This compensation process involves application of the curve of the tonal range to the brightness channel of the image.;EFFECT: amplification of an image formed by displays which use light radiators, owing to adjustment of pixel brightness and setup of the light source of the display to different levels in accordance with image characteristics.;20 cl, 107 dwg