An accurate and robust initialization is crucial for visual inertial odometry (VIO). Existing loosely-coupled VIO initialization methods suffer from poor stability from structure-from-motion (SfM).

Abstract: We present a new method for achieving 2-bit phase quantization for beam-steerable reflectarrays by exploiting four distinct reflection modes of a unit cell. Two of the four modes perform ...

November 24, 2025 • Our annual reading guide returns with 380+ new titles handpicked by NPR staff and trusted critics. Find 13 years of recommendations all in one place — that's more than 4,000 great ...