Designing a tone mapping algorithm for road visibility experiments

In this paper, we propose a tone mapping operator based on a multiscale representation pattern and on thresholds of detection contrast computed for local adaptation luminances. The vision model, combined to a display model, compresses the luminance range of the image to fit the dynamic range of the display device. Our goal is to match our perceptions of the scene at detection threshold levels. This operator has been evaluated as regards its capacity to maintain visual performances, by means of a psychophysical experiment which involves a Landolt ring on a non uniform background image. The luminance histogram is that of a daytime road scene and all semantic clues have been removed. The experiment shows that our algorithm gives good results, especially for contrasts close to the threshold value. Those results prove that computer graphics images can be used for road visibility experiment in driving simulators or in psychovisual experiments.

• Type: Conference
• Year: 2005
• Where: APGV
• Authors: Justine Grave, Roland Brémond
• Keywords: APGV 2005, Detection Threshold Levels, Multiscale Representation Pattern, Tone Mapping Operator