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Image distortion classification and detection is an important task in many applications. For example when compressing images, if we know the exact location of the distortion, then it is possible to re-compress images by adjusting the local…

计算机视觉与模式识别 · 计算机科学 2018-05-29 Namhyuk Ahn , Byungkon Kang , Kyung-Ah Sohn

A main goal in developing video-compression algorithms is to enhance human-perceived visual quality while maintaining file size. But modern video-analysis efforts such as detection and recognition, which are integral to video surveillance…

计算机视觉与模式识别 · 计算机科学 2024-11-12 Mikhail Dremin , Konstantin Kozhemyakov , Ivan Molodetskikh , Malakhov Kirill , Artur Sagitov , Dmitriy Vatolin

This paper proposes a new end-to-end trainable model for lossy image compression, which includes several novel components. The method incorporates 1) an adequate perceptual similarity metric; 2) saliency in the images; 3) a hierarchical…

图像与视频处理 · 电气工程与系统科学 2020-11-10 Yash Patel , Srikar Appalaraju , R. Manmatha

Covariance matrix estimation is a fundamental statistical task in many applications, but the sample covariance matrix is sub-optimal when the sample size is comparable to or less than the number of features. Such high-dimensional settings…

统计方法学 · 统计学 2022-06-06 Huiqin Xin , Sihai Dave Zhao

Human experts cannot efficiently access the physical information of quantum many-body states by simply "reading" the coefficients, but have to reply on the previous knowledge such as order parameters and quantum measurements. In this work,…

量子物理 · 物理学 2021-10-26 Xinran Ma , Z. C. Tu , Shi-Ju Ran

Recently, learned image compression methods have outperformed traditional hand-crafted ones including BPG. One of the keys to this success is learned entropy models that estimate the probability distribution of the quantized latent…

图像与视频处理 · 电气工程与系统科学 2022-07-22 Jun-Hyuk Kim , Byeongho Heo , Jong-Seok Lee

Image compression, as one of the fundamental low-level image processing tasks, is very essential for computer vision. Tremendous computing and storage resources can be preserved with a trivial amount of visual information. Conventional…

计算机视觉与模式识别 · 计算机科学 2020-09-09 Zhaohui Yang , Yunhe Wang , Chang Xu , Peng Du , Chao Xu , Chunjing Xu , Qi Tian

Deep learning based image compressed sensing (CS) has achieved great success. However, existing CS systems mainly adopt a fixed measurement matrix to images, ignoring the fact the optimal measurement numbers and bases are different for…

图像与视频处理 · 电气工程与系统科学 2023-07-12 Bowen Zhang , Zhijin Qin , Geoffrey Ye Li

Compression technology is essential for efficient image transmission and storage. With the rapid advances in deep learning, images are beginning to be used for image recognition as well as for human vision. For this reason, research has…

计算机视觉与模式识别 · 计算机科学 2023-08-29 Takahiro Shindo , Taiju Watanabe , Kein Yamada , Hiroshi Watanabe

To obtain the best resolution for any measurement there is an ever-present challenge to achieve maximal differentiation between signal and noise over as fine of sampling dimensions as possible. In diffraction science these issues are…

仪器与探测器 · 物理学 2023-10-23 James Weng , Niklas B. Thompson , Christopher Folmar , James D. Martin , Christina Hoffman

Lossy image compression aims to represent images in as few bits as possible while maintaining fidelity to the original. Theoretical results indicate that optimizing distortion metrics such as PSNR or MS-SSIM necessarily leads to a…

图像与视频处理 · 电气工程与系统科学 2023-08-14 Matthew J. Muckley , Alaaeldin El-Nouby , Karen Ullrich , Hervé Jégou , Jakob Verbeek

This paper is dedicated to an efficient compression of weights and optimizer states (called checkpoints) obtained at different stages during a neural network training process. First, we propose a prediction-based compression approach, where…

机器学习 · 计算机科学 2025-06-16 Yuriy Kim , Evgeny Belyaev

Estimation of the mean and covariance parameters for functional data is a critical task, with local linear smoothing being a popular choice. In recent years, many scientific domains are producing multivariate functional data for which $p$,…

统计理论 · 数学 2024-09-24 Alexander Petersen

Nowadays digital image compression and decompression techniques are very much important. So our aim is to calculate the quality of face and other regions of the compressed image with respect to the original image. Image segmentation is…

计算机视觉与模式识别 · 计算机科学 2014-02-07 Abhishek Bhattacharya , Tanusree Chatterjee

Convolutional autoencoders are now at the forefront of image compression research. To improve their entropy coding, encoder output is typically analyzed with a second autoencoder to generate per-variable parametrized prior probability…

图像与视频处理 · 电气工程与系统科学 2021-11-18 Benoit Brummer , Christophe De Vleeschouwer

This paper presents a novel framework for visual object recognition using infinite-dimensional covariance operators of input features in the paradigm of kernel methods on infinite-dimensional Riemannian manifolds. Our formulation provides…

计算机视觉与模式识别 · 计算机科学 2016-09-30 Hà Quang Minh , Marco San Biagio , Loris Bazzani , Vittorio Murino

The Hubble parameter, $H(z)$, plays a crucial role in understanding the expansion history of the universe and constraining the Hubble constant, $\mathrm{H}_0$. The Cosmic Chronometers (CC) method provides an independent approach to…

宇宙学与河外天体物理 · 物理学 2025-12-15 Jing Niu , Peng He , Tong-Jie Zhang

This paper presents a study on the use of Convolutional Neural Networks for camera relocalisation and its application to map compression. We follow state of the art visual relocalisation results and evaluate the response to different data…

计算机视觉与模式识别 · 计算机科学 2018-05-17 Luis Contreras , Walterio Mayol-Cuevas

The present work demonstrates a fast and improved technique for dewarping nonlinearly warped document images. The images are first dewarped at the page-level by estimating optimum inverse projections using curvilinear homography. The…

计算机视觉与模式识别 · 计算机科学 2020-03-17 Tanmoy Dasgupta , Nibaran Das , Mita Nasipuri

The ever-increasing parameter counts of deep learning models necessitate effective compression techniques for deployment on resource-constrained devices. This paper explores the application of information geometry, the study of…

机器学习 · 计算机科学 2025-07-15 Zakhar Shumaylov , Vasileios Tsiaras , Yannis Stylianou