国际光学工程学会
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作者:Han Wang , Jinchao Ji ...
来源:[J].Journal of Electronic Imaging(IF 1.061), 2017, Vol.26 (2), pp.023005-023005SPIE
摘要:Gabor filters are widely utilized to detect iris texture information in several state-of-the-art iris recognition systems. However, the proper Gabor kernels and the generative pattern of iris Gabor features need to be predetermined in application. The traditional empirical Gabor ...
作者:Han Wang , Lixia Liu ...
来源:[J].Journal of Nanophotonics(IF 1.644), 2018, Vol.12 (1), pp.016011-016011SPIE
摘要:A device is designed for generating the near-field optical vortex (NFOV) using linearly polarized light illumination. This optical vortex generator consists of 18 homogeneous rectangular holes. Each rectangular hole can be modeled as a pair of orthogonal dipoles with π / 2 a...
作者:Han Wang , Bin Liu
来源:[J].Optical Engineering(IF 0.88), 2018, Vol.57 (5), pp.051503-051503SPIE
摘要:This work proposes to measure the topography of microstructure surfaces using a self-mixing interference (SMI) configuration. The theoretical measurement model is built using beam-expanded plane wave method and considering SMI effect. The interference patterns for different objec...
作者:Han Wang , Tien C. Bau , Glenn Healey
来源:[J].Optical Engineering(IF 0.88), 2014, Vol.53 (10), pp.103102-103102SPIE
摘要:The performance of a face recognition system degrades when the expression in the probe set is different from the expression in the gallery set. Previous studies use either spatial or spectral information to address this problem. We propose an algorithm that uses spatial and spect...
作者:Han Wang , Xin-Lin Xia
来源:[J].Optical Engineering(IF 0.88), 2013, Vol.52 (8), pp.087104-087104SPIE
摘要:A composite structure with silicon nanowire arrays on germanium substrate is proposed as a good candidate for highly efficient solar cells. The Bruggeman approximation considering anisotropic wave propagating in uniaxial media is employed to calculate the radiative propertie...
作者:Lubing Zhou , Han Wang
来源:[J].Optical Engineering(IF 0.88), 2013, Vol.52 (3), pp.037201-037201SPIE
摘要:Automatic facial expression recognition is an interesting and challenging task. To achieve satisfactory accuracy, deriving a robust facial representation is especially important. A novel appearance-based feature, the multiscale cell local intensity increasing patterns (MC-LIIP), ...

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