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Text extraction is an important problem in image processing with applications from optical character recognition to autonomous driving. Most of the traditional text segmentation algorithms consider separating text from a simple background…

计算机视觉与模式识别 · 计算机科学 2017-07-12 Shervin Minaee , Yao Wang

We study compressed sensing (CS) signal reconstruction problems where an input signal is measured via matrix multiplication under additive white Gaussian noise. Our signals are assumed to be stationary and ergodic, but the input statistics…

信息论 · 计算机科学 2014-10-22 Yanting Ma , Junan Zhu , Dror Baron

"Background subtraction" is an old technique for finding moving objects in a video sequence for example, cars driving on a freeway. The idea is that subtracting the current image from a timeaveraged background image will leave only…

计算机视觉与模式识别 · 计算机科学 2013-02-08 Nir Friedman , Stuart Russell

Message passing is a fundamental procedure for graph neural networks in the field of graph representation learning. Based on the homophily assumption, the current message passing always aggregates features of connected nodes, such as the…

机器学习 · 计算机科学 2022-02-02 Jie Chen , Weiqi Liu , Jian Pu

Noise is ubiquitous during image acquisition. Sufficient denoising is often an important first step for image processing. In recent decades, deep neural networks (DNNs) have been widely used for image denoising. Most DNN-based image…

计算机视觉与模式识别 · 计算机科学 2024-08-02 Chenyin Gao , Shu Yang , Anru R. Zhang

Current text-driven Video Moment Retrieval (VMR) methods encode all video clips, including irrelevant ones, disrupting multimodal alignment and hindering optimization. To this end, we propose a denoise-then-retrieve paradigm that explicitly…

计算机视觉与模式识别 · 计算机科学 2025-08-18 Weijia Liu , Jiuxin Cao , Bo Miao , Zhiheng Fu , Xuelin Zhu , Jiawei Ge , Bo Liu , Mehwish Nasim , Ajmal Mian

Due to the high flexibility and remarkable performance, low-rank approximation methods has been widely studied for color image denoising. However, those methods mostly ignore either the cross-channel difference or the spatial variation of…

图像与视频处理 · 电气工程与系统科学 2024-03-05 Yiwen Shan , Dong Hu , Zhi Wang

Significant advances in video compression system have been made in the past several decades to satisfy the nearly exponential growth of Internet-scale video traffic. From the application perspective, we have identified three major…

图像与视频处理 · 电气工程与系统科学 2021-01-19 Dandan Ding , Zhan Ma , Di Chen , Qingshuang Chen , Zoe Liu , Fengqing Zhu

This paper proposes a novel approach to create an automated visual surveillance system which is very efficient in detecting and tracking moving objects in a video captured by moving camera without any apriori information about the captured…

计算机视觉与模式识别 · 计算机科学 2017-06-09 Kumar S. Ray , Soma Chakraborty

Video matting has broad applications, from adding interesting effects to casually captured movies to assisting video production professionals. Matting with associated effects such as shadows and reflections has also attracted increasing…

计算机视觉与模式识别 · 计算机科学 2023-09-15 Geng Lin , Chen Gao , Jia-Bin Huang , Changil Kim , Yipeng Wang , Matthias Zwicker , Ayush Saraf

In the evolving landscape of video enhancement and editing methodologies, a majority of deep learning techniques often rely on extensive datasets of observed input and ground truth sequence pairs for optimal performance. Such reliance often…

计算机视觉与模式识别 · 计算机科学 2024-12-10 Gaurav Shrivastava , Ser-Nam Lim , Abhinav Shrivastava

Self-supervised video denoising has seen decent progress through the use of blind spot networks. However, under their blind spot constraints, previous self-supervised video denoising methods suffer from significant information loss and…

计算机视觉与模式识别 · 计算机科学 2023-08-08 Zichun Wang , Yulun Zhang , Debing Zhang , Ying Fu

Large-scale text-to-image generative models have shown remarkable ability to synthesize diverse and high-quality images. However, it is still challenging to directly apply these models for editing real images for two reasons. First, it is…

计算机视觉与模式识别 · 计算机科学 2025-08-19 Syed Muhmmad Israr , Feng Zhao

Area openings and closings are morphological filters which efficiently suppress impulse noise from an image, by removing small connected components of level sets. The problem of an objective choice of threshold for the area remains open.…

概率论 · 数学 2016-08-16 David Coupier , Agnès Desolneux , Bernard Ycart

This work introduces a Transformer-based image compression system. It has the flexibility to switch between the standard image reconstruction and the denoising reconstruction from a single compressed bitstream. Instead of training separate…

图像与视频处理 · 电气工程与系统科学 2024-02-21 Yi-Hsin Chen , Kuan-Wei Ho , Shiau-Rung Tsai , Guan-Hsun Lin , Alessandro Gnutti , Wen-Hsiao Peng , Riccardo Leonardi

Dynamic computed tomography perfusion (CTP) imaging is a promising approach for acute ischemic stroke diagnosis and evaluation. Hemodynamic parametric maps of cerebral parenchyma are calculated from repeated CT scans of the first pass of…

医学物理 · 物理学 2020-05-21 Dufan Wu , Hui Ren , Quanzheng Li

Learning-based denoising algorithms achieve state-of-the-art performance across various denoising tasks. However, training such models relies on access to large training datasets consisting of clean and noisy image pairs. On the other hand,…

图像与视频处理 · 电气工程与系统科学 2025-03-31 Ali Zafari , Xi Chen , Shirin Jalali

When capturing and storing images, devices inevitably introduce noise. Reducing this noise is a critical task called image denoising. Deep learning has become the de facto method for image denoising, especially with the emergence of…

计算机视觉与模式识别 · 计算机科学 2023-03-24 Haoyu Chen , Jinjin Gu , Yihao Liu , Salma Abdel Magid , Chao Dong , Qiong Wang , Hanspeter Pfister , Lei Zhu

Background subtraction has been a driving engine for many computer vision and video analytics tasks. Although its many variants exist, they all share the underlying assumption that photometric scene properties are either static or exhibit…

计算机视觉与模式识别 · 计算机科学 2009-10-16 P. M. Jodoin , V. Saligrama , J. Konrad

Atmospheric turbulence poses a challenge for the interpretation and visual perception of visual imagery due to its distortion effects. Model-based approaches have been used to address this, but such methods often suffer from artefacts…

计算机视觉与模式识别 · 计算机科学 2024-03-01 P. Hill , N. Anantrasirichai , A. Achim , D. R. Bull