Dynamic range expansion of spatial light modulators based on a module-nπ method [0.03%]
基于模块化nπ方法的空間光調制器動態範圍展寬技術
Xing Zhou,Shuhai Jia,Zihan Lin et al.
Xing Zhou et al.
It is known that the cumbersome 2π correction is needed in the traditional module-2π method (i.e., the phase wrapping method) due to the 2π deviation of the phase modulation depth of spatial light modulators (SLMs). To avoid the cumberso...
Generation of cross-spectrally pure electromagnetic fields using a pair of moving diffusers [0.03%]
利用移动衍射器生成纯交频电磁场
Rajneesh Joshi,Bhaskar Kanseri
Rajneesh Joshi
In this paper, we demonstrate that the vector light field is cross-spectrally pure if it passes through two diffusers (having similar correlation properties) moving with identical linear speeds in opposite directions. To determine the spati...
Fisher information and the Cramér-Rao lower bound in single-pixel localization microscopy with spatiotemporally modulated illumination [0.03%]
单像素定位显微镜中空间时间调制照明下的费雪信息和克拉美罗下界
Maxine Xiu,Jeff Field,Randy Bartels et al.
Maxine Xiu et al.
Single-pixel imaging, the concept that an image can be captured via a single-pixel detector, is a cost-effective yet powerful technique to reduce data acquisition duration without sacrificing image resolution when properly structured illumi...
Jiasheng Xiao,Wenhui Zhang,Hao Zhang
Jiasheng Xiao
Inverse diffraction refers to recovering the input field in the plane z=0 from the knowledge of the field in some plane z>0 of the free half-space to which the input field propagates. With the rapid development of computational optics, inve...
Olga Korotkova
Olga Korotkova
Editor-in-Chief Olga Korotkova sends winter holiday greetings to the optics community, celebrates journal achievements from 2022, and introduces the topical editors who recently joined the board.
Autocorrelation functions and power spectral densities of the Stokes parameters in a polarization speckle pattern [0.03%]
偏振散斑中斯托克斯参数的自相关函数和功率谱密度研究
Wei Wang,Steen G Hanson,Mitsuo Takeda
Wei Wang
The concept of ensemble-average polarization and coherence has been applied to studying fluctuating Stokes parameters in a polarization speckle observed when coherent light is passed through a birefringent polarization scrambler. With the a...
Enhancement method with naturalness preservation and artifact suppression based on an improved Retinex variational model for color retinal images [0.03%]
基于改进Retinex变分模型的保持自然度和抑制伪影的彩色眼底图像增强方法
Rui Han,Chen Tang,Min Xu et al.
Rui Han et al.
Retinal images are widely used for the diagnosis of various diseases. However, low-quality retinal images with uneven illumination, low contrast, or blurring may seriously interfere with diagnosis by ophthalmologists. This study proposes an...
Šárka Němcová,Vlastimil Havran,Jan Hošek
Šárka Němcová
The task of imaging optics design starts with choosing a subset of imaging parameters such as the object distance, the image magnification, the image resolution, and the depth of field. It is clear that the imaging parameters are inter-rela...
Image restoration for blurry optical images caused by photon diffusion with deep learning [0.03%]
基于深度学习的光子扩散导致的模糊光学图像复原算法
Xuanxuan Zhang,Jiapei Cui,Yunfei Jia et al.
Xuanxuan Zhang et al.
Optical macroscopic imaging techniques have shown great significance in the investigations of biomedical issues by revealing structural or functional information of living bodies through the detection of visible or near-infrared light deriv...
Signal strength and integrated intensity in confocal and image scanning microscopy [0.03%]
共焦和图像扫描显微镜中的信号强度和积分强度
Colin J R Sheppard,Marco Castello,Giorgio Tortarolo et al.
Colin J R Sheppard et al.
The properties of signal strength and integrated intensity in a scanned imaging system are reviewed. These properties are especially applied to confocal imaging systems, including image scanning microscopy. The integrated intensity, equal t...