Nicolas Prouteau,Clément Joubert,Benjamin Bringier et al.
Nicolas Prouteau et al.
Solving calibrated photometric stereo under a sparse set of lights is of great interest for real-world applications. Since neural networks show advantages in dealing with material appearance, this paper proposes a bidirectional reflectance ...
Walter Torres-Sepúlveda,Alejandro Mira-Agudelo,John Fredy Barrera-Ramírez et al.
Walter Torres-Sepúlveda et al.
We propose, implement, and validate a new objective method for predicting the trends of visual acuity through-focus curves provided by specific optical elements. The proposed method utilized imaging of sinusoidal gratings provided by the op...
Reconstruction of light absorption changes in the human head using analytically computed photon partial pathlengths in layered media [0.03%]
基于分层介质中光子部分路径长度的解析计算的人体组织光学吸收变化重建方法研究
Demián A Vera,Héctor A García,M Victoria Waks-Serra et al.
Demián A Vera et al.
Functional near infrared spectroscopy has been used in recent decades to sense and quantify changes in hemoglobin concentrations in the human brain. This noninvasive technique can deliver useful information concerning brain cortex activatio...
Jorge Bacca,Emmanuel Martinez,Henry Arguello
Jorge Bacca
Spectral imaging collects and processes information along spatial and spectral coordinates quantified in discrete voxels, which can be treated as a 3D spectral data cube. The spectral images (SIs) allow the identification of objects, crops,...
Characterization of the photoelastic dispersion coefficient using polarized digital holography [0.03%]
基于偏振数字全息的光弹散射系数表征
Sidney Leal da Silva,Felipe Maia Prado,Daniel José Toffoli et al.
Sidney Leal da Silva et al.
The photoelastic dispersion coefficient represents the relationship between stress and the differences in refractive indices in a birefringent material. However, determining the coefficient using photoelasticity is challenging, as it is dif...
First-order statistics of intensity and phase in Laguerre-Gauss speckles [0.03%]
拉盖尔-高斯散斑的强度和相位的一阶统计特性
Pedro A Alvarez Fernandez,Cristian Hernando Acevedo,Jose R Guzman-Sepulveda et al.
Pedro A Alvarez Fernandez et al.
Laguerre-Gaussian (LG) beams are characterized by an azimuthal index or topological charge (m), associated with the orbital angular momentum, and by a radial index (p), which represents the number of the rings in the intensity distribution....
Polarized light diffuse reflectance FT-NIR MEMS spectrometer enabling the detection of powder samples through a thin plastic layer [0.03%]
一种能够透过薄塑料层检测粉体样品的偏振光漫反射FT-NIR MEMS光谱仪
Yomna M Eltagoury,Yasser M Sabry,Diaa Khalil
Yomna M Eltagoury
Polarized scattered light Fourier transform infrared (FTIR) spectroscopy is used for measuring the absorbance of highly scattering materials overcoming the multiple scattering effect. It has been reported for in vivo for biomedical applicat...
Periodontal disease in chronic kidney disease patients: salivomics by Fourier-transform infrared spectroscopy [0.03%]
傅立叶变换红外光谱法在慢性肾病患者牙周疾病唾液诊断中的应用研究
Gabrielle Teodoro Nepomuceno,Raquel Silva Neres Dos Santos,Larissa Avance Pavese et al.
Gabrielle Teodoro Nepomuceno et al.
It has been reported that 58% of individuals with chronic kidney disease (CKD) have moderate to advanced periodontitis due to alterations of pH and biochemical composition in the saliva. In fact, the composition of this important biofluid m...
C Tolentino Dominguez,M Bigatão Martinelli,Luciano Bachmann et al.
C Tolentino Dominguez et al.
Photoplethysmographic (PPG) signals arise from the modulation of light reflectivity on the skin due to changes of physiological origin. Imaging plethysmography (iPPG) is a video-based PPG method that can remotely monitor vital signs in a no...
Statistical modeling of atmospheric turbulence based on a low-cost experimental setup for measuring C n 2 over water [0.03%]
基于低成本实验平台的海洋大气湍流Cn2统计模型研究
Tamara S Carvalho,Claisso P Azzolin,Airton F Gurgel et al.
Tamara S Carvalho et al.
The performance of communication systems based on free-space optical links depends on external factors such as weather conditions. Among many atmospheric factors, turbulence can be the greatest challenge to performance. The characterization...