Optimization of resolution and color reproduction by controlling luminanceand contrast levels of a liquid-crystal display monitor

The image quality of a color liquid-crystal display monitor is studied by c hanging the contrast and the luminance levels. The resolution is assessed w ith modulation transfer function area (MTFA) that is measured at nine diffe rent combinations of the luminance and contrast. At these combinations, we measure the chromaticity coordinates and luminance of red-green-blue channe ls as a function of the digital-analog convert value. We analyze the relati ons among MTFA value, constant-channel chromaticity, color gamut, and maxim um luminance of a white pattern. From the results, the combination of lever s is found that provides both high resolution and good color reproduction. (C) 2000 Optical Society of America.