5 papers
Beam Cross Sections Create Mixtures: Improving Feature Localization in Secondary Electron Imaging
Vaibhav Choudhary, Akshay Agarwal, Vivek K Goyal
Secondary electron (SE) imaging techniques, such as scanning electron microscopy and helium ion microscopy (HIM), use electrons emitted by a sample in response to a focused beam of…
Ozone Cues Mitigate Reflected Downwelling Radiance in LWIR Absorption-Based Ranging
Unay Dorken Gallastegi, Wentao Shangguan, Vaibhav Choudhary +4
Passive long-wave infrared (LWIR) absorption-based ranging relies on atmospheric absorption to estimate distances to objects from their emitted thermal radiation. First demonstrate…
Free-running vs. Synchronous: Single-Photon Lidar for High-flux 3D Imaging
Ruangrawee Kitichotkul, Shashwath Bharadwaj, Joshua Rapp +3
Conventional wisdom suggests that single-photon lidar (SPL) should operate in low-light conditions to minimize dead-time effects. Many methods have been developed to mitigate these…
Image Reconstruction from Readout-Multiplexed Single-Photon Detector Arrays
Shashwath Bharadwaj, Ruangrawee Kitichotkul, Akshay Agarwal +1
Readout multiplexing is a promising solution to overcome hardware limitations and data bottlenecks in imaging with single-photon detectors. Conventional multiplexed readout process…
Absorption-Based, Passive Range Imaging from Hyperspectral Thermal Measurements
Unay Dorken Gallastegi, Hoover Rueda-Chacon, Martin J. Stevens +1
Passive hyperspectral longwave infrared measurements are remarkably informative about the surroundings. Remote object material and temperature determine the spectrum of thermal rad…