Results 31 to 40 of about 22,111 (245)
Phase Unwrapping via Graph Cuts [PDF]
IEEE Transactions on Image Processing, 2005 Phase unwrapping is the inference of absolute phase from modulo-2pi phase. This paper introduces a new energy minimization framework for phase unwrapping. The considered objective functions are first-order Markov random fields. We provide an exact energy minimization algorithm, whenever the corresponding clique potentials are convex, namely for the ...
José M. Bioucas-Dias, Gonçalo Valadão
openaire +3 more sources
Improved weighted least-squares phase unwrapping method for interferometric SAR processing
The Journal of Engineering, 2019 Based on the study of existed least-squares and weighted least-squares phase unwrapping methods, an improved weighted least-squares algorithm based on unwrapping phase error compensation is proposed.
Yu Hui +5 more
doaj +1 more source
Earth, Planets and Space, 2022 Synthetic aperture radar (SAR) interferometry can measure ground surface deformation with high accuracy and spatial resolution, in the form of phase change in an interferogram.
Yu Morishita
doaj +1 more source
Deep Learning-Based Phase Unwrapping Method
IEEE Access, 2023 A phase unwrapping method based on spatial and channel attention network is proposed to retrieve true phases from interferograms with various levels of noise. First, we propose a network that is suitable for unwrapping wrapped phase images.
Dongxu Li, Xianming Xie
doaj +1 more source
RePos : relative position estimation of UHF-RFID tags for item-level localization [PDF]
, 2019 Radio frequency identification (RFID) technology brings tremendous applications in location-based services. Specifically, ultra-high frequency (UHF) RFID tag positioning based on phase (difference) of arrival (PoA/PDoA) has won great attention, due to ...
De Poorter, Eli +6 more
core +2 more sources
A U-Net Approach for InSAR Phase Unwrapping and Denoising
Remote Sensing, 2023 The interferometric synthetic aperture radar (InSAR) imaging technique computes relative distances or surface maps by measuring the absolute phase differences of returned radar signals.
Sachin Vijay Kumar +4 more
doaj +1 more source
A Parallel InSAR Phase Unwrapping Method Based on Separated Continuous Regions
Remote Sensing, 2023 Phase unwrapping is an imperative step in interferometry processing that has a significant influence on the quality of subsequent products. Many existing phase unwrapping algorithms have been designed to solve for the unwrapped phase under the assumption
Jian Gao +4 more
doaj +1 more source
Time series phase unwrapping algorithm using LP-norm optimization compressive sensing
International Journal of Applied Earth Observations and Geoinformation, 2023 Time series phase unwrapping is an essential step in the time series interferometric synthetic aperture radar technique for deformation monitoring. However, traditional unwrapping algorithms are prone to unwrapping errors in the case of intense noise and
Shijin Li +7 more
doaj +1 more source
Improved Least Squares Phase Unwrapping Method Based on Chebyshev Filter
Applied SciencesPhase unwrapping of high phase noise and steep phase gradient has always been a challenging problem in interferometric synthetic aperture radar (InSAR), in which case the least squares (LS) phase unwrapping method often suffers from significant ...
Guoqing Li, Yake Li, Wenyan Liu
doaj +1 more source
Deep Learning Training Data for Phase Unwrapping of SAR Interferograms [PDF]
Geo DataPhase unwrapping is an essential process in synthetic aperture radar interferometry that restores phase signals constrained within the range of (-π, π) to their true phase values.
Won-Kyung Baek, Hyung-Sup Jung
doaj +1 more source