Online calibration of LiDAR-camera extrinsic parameters of tunnel mapping system with depth-constrained vibration compensation

Tunnel mapping systems are essential for tunnel inspection, integrating sensors like LiDAR, cameras, and odometers to enhance data accuracy.However, calibration is challenging due to mechanical constraints and repetitive sensor installations, especially for LiDAR-Camera alignment.Existing methods struggle in tunnels with poor lighting and low textu

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Small theropod teeth from the Late Cretaceous of the San Juan Basin, northwestern New Mexico and their implications for understanding latest Cretaceous dinosaur evolution.

Studying the evolution and biogeographic distribution of dinosaurs during the latest Cretaceous is critical for better understanding the end-Cretaceous extinction event blade polish that killed off all non-avian dinosaurs.Western North America contains among the best records of Late Cretaceous terrestrial vertebrates in the world, but is biased aga

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