Lucia Becatti,Beatrice Sarti,Gabriele Simone et al.
Lucia Becatti et al.
Over the last century, the study of color differences has attracted considerable attention, with numerous attempts to develop increasingly accurate perceptual metrics that, however, have progressed incrementally but never achieved full adeq...
Surface orientation ambiguity for single molecules at dielectric interfaces [0.03%]
介电界面单分子取向的表面态不确定性
E Dey,M Elorza,F W Foss et al.
E Dey et al.
Fluorescent molecules emit light in a dipole radiation pattern that can be used to infer their orientation through defocused fluorescence microscopy. Proper measurement of the orientation requires mathematical modeling of the radiation patt...
Automatic detection of dark stain defects in low-light-level image intensifiers based on uniformity correction and background texture filtering [0.03%]
基于均匀性校正和背景纹理滤波的低照度像增强器暗斑自动检测方法
Luzi Wang,Huamin Chen
Luzi Wang
Dark stain defects are caused by the slow drying of cleaning agents accidentally sprayed on the cathode window during the manufacturing stage of low-light-level (LLL) image intensifiers. Their existence leads to a deterioration in the imagi...
Yuriy Egorov,Valentin Mostovskoy,Alexander Rubass
Yuriy Egorov
Using non-diffracting beams (such as the Bessel beam) as an example, characteristic equations for the constants of beam propagation along the axis of the beam and the amplitude coefficients of the eigenmodes are found. It is shown that the ...
Yahya Baykal
Yahya Baykal
Field correlations of collimated Gaussian beams are formulated and examined in jet engine exhaust turbulence. Variations of the field correlations are evaluated against the changes in the parameters of the wireless optical communication lin...
Poincaré sphere representation of the Wigner distribution function of Ince-Gauss beams [0.03%]
Ince-Gauss光束的Wigner分布函数的Poincaré球表示法
Agustín Domínguez-Cruz,Julio C Gutiérrez-Vega
Agustín Domínguez-Cruz
The analytical expressions for mapping the Wigner distribution function (WDF) of even, odd, and helical Ince-Gauss (IG) beams onto the Poincaré sphere are presented. The analogy between the paraxial wave equation and the two-dimensional qu...
Method of field expansions for doubly layered media with a quasiperiodic interface [0.03%]
双层准周期界面介质的场展开方法研究
David P Nicholls
David P Nicholls
Periodic structures play a crucial role in applied optics; however, generalized forms of periodicity are becoming increasingly important in electromagnetics. Due not only to their importance but also to the high cost and great difficulty in...
Error correction method based on projection transformation for rail wear measurement using line-structured light [0.03%]
基于投影变换的光栅尺测量轨道磨损的误差修正方法
Bo Han,Yue Jin,Wenming Yang et al.
Bo Han et al.
The maintenance of railway rails relies heavily on accurate profiling and wear assessment. In this research, a rail profile detection system using line-structured light machine vision technology is developed. Traditional image processing al...
M Emre Celebi,María-Luisa Pérez-Delgado
M Emre Celebi
Color quantization, reducing the number of distinct colors in a given image with minimal distortion, is a common image processing operation with many applications in visual computing. Heckbert's median cut algorithm, which dates back to the...
Gérard Granet,Malalatiana Rinah Rasoamilanto,Karyl Raniriharinosy et al.
Gérard Granet et al.
A spectral element method is developed for determining the propagation constants of guided and leaky modes in planar multilayer waveguides. The originality of the technique lies in what we believe to be a novel combination of a hierarchical...