Yang Song,Yun Yun Chen,Anzhi He et al.
Yang Song et al.
Theories of moiré deflectometry are presented based on scalar diffraction theory. It is shown that the moiré effect is not a pure geometric phenomenon but actually the result of multishearing interference. By performing zeroth-order or fi...
Constantine A Valagiannopoulos,Nikolaos L Tsitsas
Constantine A Valagiannopoulos
Interesting applications arising in optical and chemical engineering, environmental science, and biology motivate the investigation of electromagnetic wave scattering problems by radially inhomogeneous obstacles. Our main purpose is the inv...
Tight focusing of partially coherent and circularly polarized vortex beams [0.03%]
部分相干圆偏振涡旋光束的强聚焦效应
Baosuan Chen,Zhiming Zhang,Jixiong Pu
Baosuan Chen
Based on the vectorial Debye theory, the tight focusing properties of partially coherent and circularly polarized vortex beams are investigated. The focused characteristics of right-circular and left-circular polarized partially coherent vo...
Relationship between threshold and suprathreshold perception of position and stereoscopic depth [0.03%]
阈值与位置和立体深度的超阈值感知之间的关系
Saumil S Patel,Harold E Bedell,Dorcas K Tsang et al.
Saumil S Patel et al.
We seek to determine the relationship between threshold and suprathreshold perception for position offset and stereoscopic depth perception under conditions that elevate their respective thresholds. Two threshold-elevating conditions were u...
Experimental verification of the frozen flow atmospheric turbulence assumption with use of astronomical adaptive optics telemetry [0.03%]
基于天文自适应光学遥测的大气湍流“冻结流假设”的实验验证研究
Lisa Poyneer,Marcos van Dam,Jean-Pierre Véran
Lisa Poyneer
We use closed-loop deformable mirror telemetry from Altair and Keck adaptive optics (AO) to determine whether atmospheric turbulence follows the frozen flow hypothesis. Using telemetry from AO systems, our algorithms (based on the predictiv...
Frédéric Bouchara,Sofiane Ramdani
Frédéric Bouchara
We propose an approach for subpixel edge refinement based on deformable models. In our approach, the result is constrained by two kinds of information: orientation information derived from the gradient and position information. The problem ...
Vladimir R Tuz,Vadim B Kazansky
Vladimir R Tuz
A periodic sequence of pairs of isotropic and chiral layers with a defect in the mth period is investigated. The problem is solved using the 2x2-block-representation transfer-matrix formulation. A method that simultaneously allows taking in...
Hardware implementation and calibration of background noise for an integration-based fluorescence lifetime sensing algorithm [0.03%]
基于积分的荧光寿命传感算法的背景噪声硬件实现与校准
Day-Uei Li,Richard Walker,Justin Richardson et al.
Day-Uei Li et al.
A new integration based fluorescence lifetime imaging microscopy (FLIM) called IEM has been proposed to implement lifetime extraction [J. Opt. Soc. Am. A25, 1190 (2008)]. A real-time hardware implementation of the IEM FLIM algorithm suitabl...
Diffraction of plane waves by finite-radius spiral phase plates of integer and fractional topological charge [0.03%]
整数和分数拓扑电荷的有限半径螺旋相位板对平面波的衍射效应
Hipolito Garcia-Gracia,Julio C Gutiérrez-Vega
Hipolito Garcia-Gracia
A detailed analysis of the plane-wave diffraction by a finite-radius circular spiral phase plate (SPP) with integer and fractional topological charge and with variable transmission coefficients inside and outside of the plate edge is presen...
Pseudopolar decomposition of the Jones and Mueller-Jones exponential polarization matrices [0.03%]
Jones矩阵和Mueller-Jones指数化偏振矩阵的伪偏振分解
Oriol Arteaga,Adolf Canillas
Oriol Arteaga
We propose a new algorithm, the pseudopolar decomposition, to decompose a Jones or a Mueller-Jones matrix into a sequence of matrix factors: J congruent withJ(R)J(D)J(1C)J(2C) or M congruent withM(R)M(D)M(1C)M(2C). The matrices J(R)(M(R)) a...