Results 141 to 150 of about 4,791 (204)

Fiber Wavelength Meter Based on Fizeau Interferometer on wFBG for Phi-OTDR Signal Drift Compensation. [PDF]

Sensors (Basel)
Stepanov KV, Gritsenko TV, Khan RI, Koshelev KI, Barkov FL, Zhirnov AA, Pnev AB.   +6 more
europepmc   +1 more source

Virtual 3D surface imaging system for the validation of tumor tracking algorithm used in surface-guided radiotherapy. [PDF]

J Appl Clin Med Phys
Wu X, Wei Z, Zhai S, Zhang Y, Liu Z, Jiang T, Zhang L, Qian J.   +7 more
europepmc   +1 more source

Phase Unwrapping using ML methods

Procedia Computer Science
Diogo Couto, Steffan Davies, Joaquim João Sousa, António Cunha   +3 more
openaire   +1 more source

Continuous unwrapped phase

, 1998
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Analysis of the phase unwrapping algorithm

Applied Optics, 1982
Several workers have recently proposed digital techniques for high-resolution imaging through the turbulent atmosphere. The basic concept of these algorithms is to calculate and average phase angles of a series of image Fourier transforms to suppress the unwanted atmospheric effects on image resolution.
Kazuyoshi Itoh
exaly   +3 more sources

An Improved Phase Unwrapping Algorithm

Proceedings of the 2020 4th International Conference on Electronic Information Technology and Computer Engineering, 2020
InSAR technology plays an increasingly important role in detecting subsidence, while phase unwrapping is one of the most important steps in the InSAR process whose efficiency will directly affect digital elevation model. There has been no universal algorithm for phase unwrapping because the gradient between adjacent phases, such as noise, may be ...
Xiaomao Chen, Zhongyuan Wen, Qi Wu
openaire   +1 more source

Phase Unwrapping with Phase-Singularity Spreading

2006 IEEE International Symposium on Geoscience and Remote Sensing, 2006
We propose a novel phase unwrapping method where we spread the singularity in phase map with fractional phase compensators. We find that the obtained digital elevation maps have higher quality than those obtained in conventional network programming method. In addition, the calculation cost is very small.
Akira Hirose 0001, Ryo Yamaki
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Proposed algorithm for phase unwrapping

Applied Optics, 2002
A new, to our knowledge, two-dimensional phase-unwrapping algorithm is proposed. The algorithm, which is based on the global continuity of physical information (e.g. the three-dimensional surface profile of an object) being measured, uses the principle of least-phase difference to rectify errors caused by an erroneous 2pi-phase jump in the initial ...
He, X.Y., Kang, X., Tay, C.J., Quan, C., Shang, H.M.   +4 more
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Weighted denoising for phase unwrapping

SPIE Proceedings, 2014
In order to measure the optical distance of the object that changes rapidly over time, Fourier transform method is appropriate because it requires only a single interferogram. In the measurements of such fast phenomena, the thermal noise by the camera to record the interferogram results in a significant error and the signal becomes weak owing to the
Satoshi Tomioka, Shusuke Nishiyama
openaire   +1 more source