Effects of Sensor Cover Damages on Point Clouds of Automotive Lidar

Abstract

We investigated the effects of mechanical sensor cover damages like scratches, cracks, and holes on point clouds<br>of automotive lidar.

NIR-Triggered High-Efficiency Self-Healable Protective Optical Coating for Vision Systems

“…Depending on the application field and light-control principles, imaging modules have been developed from conventional 2D vision sensors to 3D stereoscopic , or light-field cameras, , structured-light-based 3D imaging devices, , time-of-flight sensors, , light detection and ranging (LiDAR) devices, , and 3D holographic imaging systems . However, because these imaging modules have been mostly intended to be mounted onto moving objects, the outermost optical surfaces exposed to external conditions are extremely vulnerable to mechanical scratch damage, which results in undesired optical refraction, diffraction, and scattering via noisy stray light. , Such optical noise deviates from elaborate optical designs, causing resolution degradation or even severe pattern distortion. − To alleviate these concerns, optical protective coatings with high surface hardness are typically applied to the outermost surfaces of optical modules. However, given the high-speed motions of vehicles, drones, and robots, catastrophic deep surface defects or cumulative multiple scratches cannot be prevented by simply increasing the surface hardness of coatings based on passive materials.…”