Zixuan Cai,Elvis Pillinen,Meilan Luo et al.
Zixuan Cai et al.
We underline some of the general properties of polarization gratings, discuss their effect on partially coherent and partially polarized light, and discuss how they can be used to produce exotic polarization states. Specifically, we highlig...
Off-axis system misalignment detection technique based on hybrid features of the wavelet transform and the Gabor filter [0.03%]
基于小波变换和gabor滤波器的混合特征的轴外系统偏移检测技术
Weihua Tang,Wei Tang,Zhengwei Tang et al.
Weihua Tang et al.
Optical system misalignment aberrations caused by various factors such as environmental conditions and mechanical jitter of optical components can lead to a decline in the imaging quality of the system. The non-rotational symmetry structure...
Three-dimensional reconstruction method for sparsely textured surfaces via freely moving line-structured-light-based binocular stereo vision [0.03%]
基于自由移动线结构光双目视觉的稀疏纹理表面三维重建方法
ShuaiShuai Jiang,Zhou Zhou,Yong Tao et al.
ShuaiShuai Jiang et al.
Three-dimensional (3D) reconstruction using line-structured-light-based stereo vision is one key technique in the field of computer vision measurement. However, most existing stereo vision methods are static and have limited measurement ran...
Common issues and human intervention in object detection from handcrafted features to deep learning: discussion [0.03%]
从手工特征到深度学习的目标检测中的常见问题及人类干预：讨论
Michela Lecca,Simone Bianco
Michela Lecca
While in traditional methods object detection is based on the handcrafted definition of relevant visual features and rules, in machine/deep learning methods this task is achieved by learning both features and rules from a training set. The ...
Developing variants of the Lucy-Richardson algorithm for coded aperture imaging: tutorial [0.03%]
用于编码孔径成像的Lucy-Richardson算法变体的发展：教程
Vijayakumar Anand
Vijayakumar Anand
Deconvolution methods, originally developed for image deblurring, are foundational to coded aperture imaging (CAI) technologies. Among these, the Lucy-Richardson algorithm (LRA), first introduced over half a century ago, has seen renewed in...
Wideband aberration-corrected spectrometer using a single toroidal grating: theory and prototype [0.03%]
一种使用单个环形光栅的宽域像差校正分光仪：理论与原型设计
Meixia Chen,Xingshuo Wang,Chengyue Liu
Meixia Chen
This work introduces a wideband aberration-corrected high-resolution (WACHR) spectrometer. The design replaces the conventional collimating mirror and planar grating in the Czerny-Turner configuration with a toroidal diffraction grating. Th...
Dual-stage encryption framework for secure 3D information hiding using single-pixel imaging and diffusion models [0.03%]
基于单像素成像和扩散模型的安全3D信息隐藏双层加密框架
Enzhi Xu,Chenxing Wang
Enzhi Xu
With the rapid advancement of three-dimensional (3D) imaging technologies, 3D data has been increasingly utilized in areas such as medical diagnostics, digital heritage preservation, and virtual reality, where protecting sensitive spatial i...
Imaging properties of freeform quadric reflectors via the theory of eigenmirrors [0.03%]
基于特征镜理论的自由曲面二次反射器成像性质研究
R Andrew Hicks
R Andrew Hicks
A surface S is said to be an eigensurface of a mirror M if the reflection of S in M appears undistorted. In that case, M is the eigenmirror corresponding to the eigensurface S. Rotationally symmetric eigenmirror/eigensurface pairs are easy ...
Experimental investigation on the propagation of partially coherent fractional vortex beams in atmospheric turbulence [0.03%]
部分相干分数涡旋光束在大气湍流中传输的实验研究
Xiang Xu,Chuankai Luo,Xianmei Qian et al.
Xiang Xu et al.
Partially coherent vortex beams have attracted growing interest due to their enhanced robustness and unique propagation characteristics in complex media. In this work, we experimentally investigate the behavior of partially coherent fractio...
Nano-plasmonic dual-mode probe for near-vector field scanning optical microscopy [0.03%]
纳米等离激元双模式探针用于近矢量场扫描光学显微镜
Yujie Gao,Yupei Zhang,Shanlong Guo et al.
Yujie Gao et al.
The probe serves as a pivotal component in scanning near-field optical microscopy, enhancing its imaging resolution by capturing high-frequency information within the sample's near-field region. However, a current limitation exists: a singl...