Projection mapping leaves the darkness behind

Phys.org  March 18, 2024 Projection mapping (PM) typically requires a dark environment to achieve high-quality projections, limiting its practicality. Researchers in Japan overcame this limitation by replacing conventional room lighting with heterogeneous projectors. These projectors replicated environmental lighting by selectively illuminating the scene, excluding the projection target. They developed distributed projector optimization framework designed to effectively replicate environmental lighting and incorporated a large-aperture projector, in addition to standard projectors, to reduce high-luminance emitted rays and hard shadows. To validate their approach, they conducted a series of quantitative and qualitative experiments. They successfully demonstrated that their projector-based lighting system significantly enhanced […]

Researchers achieve quantum key distribution for cybersecurity in novel experiment

Phys.org   March 13, 2024 In their conference paper researchers at Oak Ridge National Laboratory reported on the first implementation of their CV-QKD scheme over a deployed optical fiber network. According to the researchers, in continuous variable quantum key distribution (CV-QKD), using a truly local (not transmitted over the network) oscillator improves security… read more. TECHNICAL ARTICLE