Results 51 to 60 of about 6,949 (194)

Curvature sensors: noise and its propagation

, 2010
The signal measured with a curvature sensor is here analyzed. In the outset, we derive the required minimum number of sensing elements at the pupil edges, in dependence on the total number of sensing elements.
Aglae Kellerer, Arsenault, Chun, Fried, Graves, Hudgin, Lai, Roddier, Watanabe, Yang   +9 more
core   +1 more source

An Automatic Optimized Method for a Digital Optical Phase Conjugation System in Focusing through Scattering Media

Applied Sciences, 2020
In this paper, a reliable automatic optimized method for a digital optical phase conjugation (DOPC) system based on a multipopulation genetic algorithm (MPGA) is proposed for improving the compensation quality of DOPC.
Pan Zhang, Zhan Li, Lu Han, Dean Liu, Jianqiang Zhu   +4 more
doaj   +1 more source

Informative feature selection based on the Zernike polynomial coefficients for various pathologies of the human eye cornea [PDF]

Компьютерная оптика, 2018
The study was devoted to the analysis of wavefront aberrations under changes of the cornea surface curvature in the human eye. The analysis was based on the representation of aberrations of the front and rear corneal surfaces as superposition of Zernike ...
Pavel Khorin, Nataly Ilyasova, Rustam Paringer   +2 more
doaj   +1 more source

Balanced Binary Tree Schemes for Computing Zernike Radial Polynomials

IEEE Access, 2023
Zernike radial polynomials (ZRP) play a significant role in application areas such as optics design, imaging systems, and image processing systems. Currently, there are two kinds of numerical schemes for computing the ZRP automatically with computer ...
Hong-Yan Zhang, Yu Zhou, Zhi-Qiang Feng
doaj   +1 more source

UniMR: A Plug‐and‐Play Framework of Automated Molecular Recognition for Scanning Tunneling Microscopy

Advanced Science, Volume 13, Issue 11, 23 February 2026.
UniMR, a training‐free framework for automated molecular recognition in STM images. By integrating adaptive feature selection with CLIP embeddings and Gaussian Mixture Modeling, UniMR achieves robust performance across diverse molecular systems and low‐resolution conditions.
Ziqiang Cao, Lingyin Zhang, Bingzheng Wu, Haonan Chen, Junhao Sun, Linghao Yan, Wenfei Li, Yangyang Wu, Zhifang Wang, Qigang Zhong, Lifeng Chi   +10 more
wiley   +1 more source

Zernike by one Pascal triangle: A high performance, low memory cost and flexible computation scheme for Zernike polynomials

Journal of the European Optical Society-Rapid Publications
This work uncovers two hidden cases of block-wise recurrence in Zernike computations. Based on these findings, a new computation scheme for Zernike polynomials is proposed.
Chen Wei-Jun
doaj   +1 more source

An alternative method for phase-unwrapping of interferometric data [PDF]

Journal of the European Optical Society-Rapid Publications, 2014
In this paper we present a novel algorithm for phase unwrapping where only a subset of data from the wrapped phase map is used to reconstruct the unwrapped phase map as a linear combination of radial basis functions (RBF’s).
de la Rosa-Miranda E., Gonzalez-Ramirez E., Villa-Hernández J. J., Berriel-Valdos L. R., Olvera-Olvera C., de la Rosa-Vargas J. I., Saucedo-Anaya T., Arceo Olague J. G., Alaniz-Lumbreras D., Castaño V. M.   +9 more
doaj   +1 more source

Optimization of Spot Efficiency of Double-Helix Point Spread Function and Its Application in Intracellular Imaging

Applied Sciences, 2022
The nano-scale spatial positioning of nanoparticles in tumor cells can be achieved through the double-helix point spread functions (DH-PSF). Nevertheless, certain issues such as low light intensity concentration of the main lobes, the influence of the ...
Jun Yang, Hanliang Du, Zhenhao Chai, Lei Zhang, Ben Q. Li, Jianlei Cui, Xuesong Mei   +6 more
doaj   +1 more source

Design of Compact Liquid Crystal on Silicon Projection Optics Utilizing a Common Freeform Optical Path for Augmented Reality Displays

Advanced Intelligent Systems, Volume 8, Issue 2, February 2026.
This study presents a compact freeform projection optics using dual wedge prisms for waveguide displays. Unlike previous designs that separate illumination and imaging paths, a freeform optical path integrates both. The system achieves a 32º field of view, 37.5 pixels per degree, and a total volume of less than 2 cm3.
Ximeng Wang, Dewen Cheng, Yuefan Shan, Da Wang, Tong Yang, Yongtian Wang   +5 more
wiley   +1 more source

Galaxy clusters morphology with Zernike polynomials: The first application on Planck Compton parameter maps [PDF]

EPJ Web of Conferences
The study of the morphology of 2D projected maps of galaxy clusters is a suitable approach to infer, from real data, the dynamical state of those systems.
Capalbo V., De Petris M., Cui W., Ferragamo A., Ruppin F., Yepes G.   +5 more
doaj   +1 more source