PT Journal
AU Zietlow, T
   Heinz, M
   Brunnett, G
TI Advanced luminance control and black offset correction for multi-projector display systems
SO Journal of Virtual Reality and Broadcasting
PY 2016
VL 12(2015)
IS 4
DI 10.20385/1860-2037/12.2015.4
DE black offset; contrast sensitivity; edge blending; luminance control; multi-projector display; perceptual seamlesness; photometrical calibration; tiled display
AB In order to display a homogeneous image using multiple projectors, differences in the projected intensities must be compensated. In this paper, we present novel approaches to combine and extend existing techniques for edge blending and luminance harmonization to achieve a detailed luminance control. Furthermore, we apply techniques for improving the contrast ratio of multi-segmented displays also to the black offset correction. We also present a simple scheme to involve the displayed context in the correction process to dynamically improve the contrast in brighter images. In addition, we present a metric to evaluate the different methods and their influence on the visual quality.
ER