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In this paper, we show how we can combine Electromagnetics (EM) with signal processing algorithms to enhance the image resolution over that can be realized by using Electromagnetics techniques alone. We discuss several signal processing…

光学 · 物理学 2013-05-14 Xiang Gu , Chiara Pelletti , Raj Mittra , Yunhua Zhang

The performance of electron energy-loss spectrometers can often be limited by their electron-optical aberrations. Due to recent developments in high energy-resolution and momentum-resolved electron energy loss spectroscopy (EELS), there is…

材料科学 · 物理学 2023-02-28 Yueming Guo , Andrew R. Lupini

In two-dimensional spectrographs, the optical distortions in the spatial and dispersion directions produce variations in the sub-pixel sampling of the background spectrum. Using knowledge of the camera distortions and the curvature of the…

天体物理学 · 物理学 2009-12-08 Daniel D. Kelson

This manuscript presents a new extended linear system for integral equation based techniques for solving boundary value problems on locally perturbed geometries. The new extended linear system is similar to a previously presented technique…

数值分析 · 数学 2021-03-17 Yabin Zhang , Adrianna Gillman

We in this paper solve the problem of high-quality automatic real-time background cut for 720p portrait videos. We first handle the background ambiguity issue in semantic segmentation by proposing a global background attenuation model. A…

计算机视觉与模式识别 · 计算机科学 2017-05-01 Xiaoyong Shen , Ruixing Wang , Hengshuang Zhao , Jiaya Jia

Instance segmentation in electron microscopy (EM) volumes is tough due to complex shapes and sparse annotations. Self-supervised learning helps but still struggles with intricate visual patterns in EM. To address this, we propose a…

计算机视觉与模式识别 · 计算机科学 2023-09-06 Yinda Chen , Wei Huang , Xiaoyu Liu , Shiyu Deng , Qi Chen , Zhiwei Xiong

In this paper, we proposed two new types of edge multiscale methods motivated by \cite{GL18} to solve Partial Differential Equations (PDEs) with high-contrast heterogeneous coefficients: Edge spectral multiscale Finte Element method…

数值分析 · 数学 2019-09-04 Shubin Fu , Eric Chung , Guanglian Li

Low-light imaging on mobile devices is typically challenging due to insufficient incident light coming through the relatively small aperture, resulting in a low signal-to-noise ratio. Most of the previous works on low-light image processing…

图像与视频处理 · 电气工程与系统科学 2022-09-05 Yucheng Lu , Seung-Won Jung

In this paper we show that we can use a modified version of the h-p spectral element method proposed in \cite{duttora1,duttom,duttora2,tomarth} to solve elliptic problems with general boundary conditions to exponential accuracy on polygonal…

数值分析 · 数学 2007-07-17 P K Dutt , N Kishore Kumar , C S Upadhyay

Self-supervised learning has shown great potentials in improving the video representation ability of deep neural networks by getting supervision from the data itself. However, some of the current methods tend to cheat from the background,…

计算机视觉与模式识别 · 计算机科学 2021-04-23 Jinpeng Wang , Yuting Gao , Ke Li , Yiqi Lin , Andy J. Ma , Hao Cheng , Pai Peng , Feiyue Huang , Rongrong Ji , Xing Sun

This paper proposes a deep neural network structure that exploits edge information in addressing representative low-level vision tasks such as layer separation and image filtering. Unlike most other deep learning strategies applied in this…

计算机视觉与模式识别 · 计算机科学 2018-06-12 Qingnan Fan , Jiaolong Yang , Gang Hua , Baoquan Chen , David Wipf

We introduce a new approach to spectral sparsification that approximates the quadratic form of the pseudoinverse of a graph Laplacian restricted to a subspace. We show that sparsifiers with a near-linear number of edges in the dimension of…

数据结构与算法 · 计算机科学 2018-10-09 Huan Li , Aaron Schild

Remote sensing images are frequently degraded by adverse weather conditions, particularly clouds and haze, which severely impair downstream applications. Existing restoration methods typically rely on computationally heavy architectures or…

计算机视觉与模式识别 · 计算机科学 2026-04-28 Runci Bai , Kui Jiang , Xiang Chen , Chen Wu , Dianjie Lu , Guijuan Zhang , Zhuoran Zheng

Recent advances in detectors and computer science have enabled the acquisition and the processing of multidimensional datasets, in particular in the field of spectral imaging. Benefiting from these new developments, earth scientists try to…

材料科学 · 物理学 2012-06-04 Nicolas Dobigeon , Nathalie Brun

We present the novel Efficient Line Segment Detector and Descriptor (ELSD) to simultaneously detect line segments and extract their descriptors in an image. Unlike the traditional pipelines that conduct detection and description separately,…

计算机视觉与模式识别 · 计算机科学 2021-04-30 Haotian Zhang , Yicheng Luo , Fangbo Qin , Yijia He , Xiao Liu

When imaging through a semi-reflective medium such as glass, the reflection of another scene can often be found in the captured images. It degrades the quality of the images and affects their subsequent analyses. In this paper, a novel deep…

图像与视频处理 · 电气工程与系统科学 2022-08-11 Tingtian Li , Yuk-Hee Chan , Daniel P. K. Lun

The dual continuum model serves as a powerful tool in the modeling of subsurface applications. It allows a systematic coupling of various components of the solutions. The system is of multiscale nature as it involves high heterogeneous and…

数值分析 · 数学 2018-07-31 Siu Wun Cheung , Eric T. Chung , Yalchin Efendiev , Wing Tat Leung , Maria Vasilyeva

Background/foreground segmentation has a lot of applications in image and video processing. In this paper, a segmentation algorithm is proposed which is mainly designed for text and line extraction in screen content. The proposed method…

计算机视觉与模式识别 · 计算机科学 2015-09-02 Shervin Minaee , Haoping Yu , Yao Wang

Few-shot fine-grained recognition (FS-FGR) aims to recognize novel fine-grained categories with the help of limited available samples. Undoubtedly, this task inherits the main challenges from both few-shot learning and fine-grained…

计算机视觉与模式识别 · 计算机科学 2023-01-20 Zican Zha , Hao Tang , Yunlian Sun , Jinhui Tang

Foreground segmentation algorithms aim segmenting moving objects from the background in a robust way under various challenging scenarios. Encoder-decoder type deep neural networks that are used in this domain recently perform impressive…

计算机视觉与模式识别 · 计算机科学 2019-09-04 Long Ang Lim , Hacer Yalim Keles