Iris authentication in handheld devices-considerations for constraint-free acquisition

S Thavalengal, P Bigioi… - IEEE Transactions on …, 2015 - ieeexplore.ieee.org
As a near ideal biometric, iris authentication is widely used and mobile acquisition
techniques are known. But iris acquisition on handheld imaging devices, such as …

Non-orthogonal view iris recognition system

CT Chou, SW Shih, WS Chen… - IEEE Transactions on …, 2009 - ieeexplore.ieee.org
This paper proposes a non-orthogonal view iris recognition system comprising a new iris
imaging module, an iris segmentation module, an iris feature extraction module and a …

Multispectral scattering imaging based on metasurface diffuser and deep learning

Y Lei, Y Guo, M Pu, Q He, P Gao, X Li… - physica status solidi …, 2022 - Wiley Online Library
Multispectral imaging plays an essential role in applications from biomedical imaging to
remote sensing since it records rich spectral and spatial information. Nevertheless …

Optimized light source spectral power distribution for RGB camera based spectral reflectance recovery

L Wang, A Sole, JY Hardeberg, X Wan - Optics Express, 2021 - opg.optica.org
The accuracy of recovered spectra from camera responses mainly depends on the spectral
estimation algorithm used, the camera and filters selected, and the light source used to …

High-speed multispectral iris capture system design

Y Gong, D Zhang, P Shi, J Yan - IEEE Transactions on …, 2012 - ieeexplore.ieee.org
Multispectral iris recognition is one of the most reliable biometrics in terms of recognition
performance. This paper describes the design and implementation of a high-speed …

Hyperspectral optical imaging of human iris in vivo: characteristics of reflectance spectra

JM Medina, LM Pereira, HT Correia… - … of biomedical optics, 2011 - spiedigitallibrary.org
We report a hyperspectral imaging system to measure the reflectance spectra of real human
irises with high spatial resolution. A set of ocular prosthesis was used as the control …

Adaptive global training set selection for spectral estimation of printed inks using reflectance modeling

T Eckhard, EM Valero, J Hernández-Andrés… - Applied …, 2014 - opg.optica.org
The performance of learning-based spectral estimation is greatly influenced by the set of
training samples selected to create the reconstruction model. Training sample selection …

[PDF][PDF] 基于相关性选择的微型计算光谱探测技术

杨港, 郭迎辉, 蒲明博, **雄, 罗先刚 - 光电工程, 2022 - researching.cn
得益于体积小, 结构紧凑, 易集成等优势, 基于超构表面的微型光谱探测技术**年来被广泛研究.
然而, 现有基于超构表面的微型光谱探测系统设计过程中, 通常缺乏对超构表面透射光谱相关性 …

Portable multispectral imaging system based on light-emitting diodes for spectral recovery from 370 to 1630 nm

J Herrera-Ramírez, M Vilaseca, J Pujol - Applied optics, 2014 - opg.optica.org
To expand and investigate the potential of spectral imaging, we developed a portable
multispectral system using light-emitting diodes. This system recovers spectral information …

Colour differences in Caucasian and Oriental women's faces illuminated by white light‐emitting diode sources

M Melgosa, N Richard… - … Journal of Cosmetic …, 2018 - Wiley Online Library
Objective To provide an approach to facial contrast, analysing CIELAB colour differences ()
and its components in women's faces from two different ethnic groups, illuminated by …