Results 81 to 90 of about 4,294 (185)
Utilizing sensor fusion in markerless mobile augmented reality [PDF]
, 2011 One of the key challenges of markerless Augmented Reality (AR) systems, where no a priori information of the environment is available, is map and scale initialization.
Coulton, Paul +2 more
core +1 more source
IET Radar, Sonar &Navigation, Volume 19, Issue 1, January/December 2025.This article presents a study on interferometric inverse synthetic aperture radar (ISAR) for three‐dimensional imaging and rotational velocity estimation. The study focuses on synchronisation error compensation in a multistatic setup with three ground‐based radars and non‐orthogonal baselines.
Manjunath Thindlu Rudrappa +3 more
wiley +1 more source
Random Stepped Frequency ISAR 2D Joint Imaging and Autofocusing by Using 2D-AFCIFSBL
Remote SensingWith the increasingly complex electromagnetic environment faced by radar, random stepped frequency (RSF) has garnered widespread attention owing to its remarkable Electronic Counter-Countermeasure (ECCM) characteristic, and it has been universally ...
Yiding Wang +3 more
doaj +1 more source
Visual Servoing-Based approach for efficient autofocusing in Scanning Electron Microscope.
, 2013 International audienceFast and reliable autofocusing methods are essential for performing automatic nano-objects positioning tasks using a scanning electron microscope (SEM).
Dembélé, Sounkalo +3 more
core +2 more sources
Statistical Analysis of Performance of Optimisation‐Based SAR Autofocus
IET Radar, Sonar &Navigation, Volume 19, Issue 1, January/December 2025.Transionospheric SAR autofocus is a variational algorithm designed to overcome the limitations of conventional autofocus methods in correcting ionospheric distortions in spaceborne SAR images. This study provides a systematic statistical analysis of its robustness, examining the effects of turbulence, clutter, and noise on performance.
Patrick Haughey +2 more
wiley +1 more source
Dynamic Control of Circular Airy Beams With Linear Optical Potentials
IEEE Photonics Journal, 2012 We investigate the propagation dynamics of radially symmetric, circular Airy beams through a medium having linear optical potentials. On the basis of analytic expressions and numerical calculations, we show that “off-axis” autofocusing can ...
Chi-Young Hwang +2 more
doaj +1 more source
Computational cytometer based on magnetically modulated coherent imaging and deep learning. [PDF]
, 2019 Detecting rare cells within blood has numerous applications in disease diagnostics. Existing rare cell detection techniques are typically hindered by their high cost and low throughput.
Bai, Bijie +19 more
core
Wavefront-sensing-based autofocusing in microscopy [PDF]
Journal of Biomedical Optics, 2017 Massive image acquisition is required along the optical axis in the classical image-analysis-based autofocus method, which significantly decreases autofocus efficiency. A wavefront-sensing-based autofocus technique is proposed to increase the speed of autofocusing and obtain high localization accuracy.
Xiaolin Tian +10 more
openaire +2 more sources
Nonlinear Self‐Accelerating Pulses Shedding from Airyprime Pulses in Kerr Media
Advanced Photonics Research, Volume 5, Issue 12, December 2024.Nonlinear self‐accelerating pulses are formed from the Airyprime pulses nonlinear propagation in optical fiber with normal or anomalous dispersion. In this study, a flexible method to generate accelerated wave packets in pure Kerr medium is demonstrated.
Xuri Yang +4 more
wiley +1 more source
Pipelined digital SAR azimuth correlator using hybrid FFT-transversal filter [PDF]
, 1984 A synthetic aperture radar system (SAR) having a range correlator is provided with a hybrid azimuth correlator which utilizes a block-pipe-lined fast Fourier transform (FFT).
Liu, K. Y., Wu, C.
core +1 more source