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Significant advances have been made recently on training neural networks, where the main challenge is in solving an optimization problem with abundant critical points. However, existing approaches to address this issue crucially rely on a…

机器学习 · 计算机科学 2019-02-28 Weihao Gao , Ashok Vardhan Makkuva , Sewoong Oh , Pramod Viswanath

Despite the breakthroughs in quality of image enhancement, an end-to-end solution for simultaneous recovery of the finer texture details and sharpness for degraded images with low resolution is still unsolved. Some existing approaches focus…

计算机视觉与模式识别 · 计算机科学 2019-01-17 Soumya Shubhra Ghosh , Yang Hua , Sankha Subhra Mukherjee , Neil Robertson

Digital cameras can only capture a limited range of real-world scenes' luminance, producing images with saturated pixels. Existing single image high dynamic range (HDR) reconstruction methods attempt to expand the range of luminance, but…

图像与视频处理 · 电气工程与系统科学 2020-05-18 Marcel Santana Santos , Tsang Ing Ren , Nima Khademi Kalantari

Limited-angle X-ray tomography reconstruction is an ill-conditioned inverse problem in general. Especially when the projection angles are limited and the measurements are taken in a photon-limited condition, reconstructions from classical…

图像与视频处理 · 电气工程与系统科学 2021-12-21 Zhen Guo , Jung Ki Song , George Barbastathis , Michael E. Glinsky , Courtenay T. Vaughan , Kurt W. Larson , Bradley K. Alpert , Zachary H. Levine

Convolutional Neural Networks (CNNs) have been widely used in computer vision tasks, such as face recognition and verification, and have achieved state-of-the-art results due to their ability to capture discriminative deep features.…

计算机视觉与模式识别 · 计算机科学 2018-07-31 Alessandro Calefati , Muhammad Kamran Janjua , Shah Nawaz , Ignazio Gallo

Maintaining natural image statistics is a crucial factor in restoration and generation of realistic looking images. When training CNNs, photorealism is usually attempted by adversarial training (GAN), that pushes the output images to lie on…

计算机视觉与模式识别 · 计算机科学 2018-07-19 Roey Mechrez , Itamar Talmi , Firas Shama , Lihi Zelnik-Manor

This paper proposes a deep feature extractor for iris recognition at arbitrary resolutions. Resolution degradation reduces the recognition performance of deep learning models trained by high-resolution images. Using various-resolution…

计算机视觉与模式识别 · 计算机科学 2024-07-15 Yuho Shoji , Yuka Ogino , Takahiro Toizumi , Atsushi Ito

Nowadays, deep-learning image coding solutions have shown similar or better compression efficiency than conventional solutions based on hand-crafted transforms and spatial prediction techniques. These deep-learning codecs require a large…

多媒体 · 计算机科学 2023-11-13 Shima Mohammadi , Joao Ascenso

This paper addresses the problem of visual feature representation learning with an aim to improve the performance of end-to-end reinforcement learning (RL) models. Specifically, a novel architecture is proposed that uses a heterogeneous…

计算机视觉与模式识别 · 计算机科学 2023-03-02 Darshita Jain , Anima Majumder , Samrat Dutta , Swagat Kumar

In image classification tasks, deep learning models are vulnerable to image distortions i.e. their accuracy significantly drops if the input images are distorted. An image-classifier is considered "reliable" if its accuracy on distorted…

计算机视觉与模式识别 · 计算机科学 2025-07-23 Dang Nguyen , Sunil Gupta , Kien Do , Svetha Venkatesh

Despite the breakthroughs in accuracy and speed of single image super-resolution using faster and deeper convolutional neural networks, one central problem remains largely unsolved: how do we recover the finer texture details when we…

We consider neural network training, in applications in which there are many possible classes, but at test-time, the task is a binary classification task of determining whether the given example belongs to a specific class, where the class…

机器学习 · 统计学 2018-09-18 Gil Keren , Sivan Sabato , Björn Schuller

Supervised learning with a convolutional neural network is recognized as a powerful means of image restoration. However, most such methods have been designed for application to grayscale and/or color images; therefore, they have limited…

图像与视频处理 · 电气工程与系统科学 2019-07-02 Ryuji Imamura , Tatsuki Itasaka , Masahiro Okuda

We address the problem of exposure correction of dark, blurry and noisy images captured in low-light conditions in the wild. Classical image-denoising filters work well in the frequency space but are constrained by several factors such as…

图像与视频处理 · 电气工程与系统科学 2021-05-24 Ojasvi Yadav , Koustav Ghosal , Sebastian Lutz , Aljosa Smolic

Deep neural networks demonstrate to have a high performance on image classification tasks while being more difficult to train. Due to the complexity and vanishing gradient problem, it normally takes a lot of time and more computational…

计算机视觉与模式识别 · 计算机科学 2018-05-02 Mohammad Sadegh Ebrahimi , Hossein Karkeh Abadi

By benefiting from perceptual losses, recent studies have improved significantly the performance of the super-resolution task, where a high-resolution image is resolved from its low-resolution counterpart. Although such objective functions…

计算机视觉与模式识别 · 计算机科学 2019-08-21 Mohammad Saeed Rad , Behzad Bozorgtabar , Urs-Viktor Marti , Max Basler , Hazim Kemal Ekenel , Jean-Philippe Thiran

Deep convolutional neural networks have proven to be well suited for image classification applications. However, if there is distortion in the image, the classification accuracy can be significantly degraded, even with state-of-the-art…

计算机视觉与模式识别 · 计算机科学 2019-02-15 Minho Ha , Younghoon Byeon , Youngjoo Lee , Sunggu Lee

Image compression is one of the essential methods of image processing. Its most prominent advantage is the significant reduction of image size allowing for more efficient storage and transfer. However, lossy compression is associated with…

图像与视频处理 · 电气工程与系统科学 2021-05-25 Patryk Najgebauer , Rafal Scherer , Leszek Rutkowski

Image retrieval can be formulated as a ranking problem where the goal is to order database images by decreasing similarity to the query. Recent deep models for image retrieval have outperformed traditional methods by leveraging…

计算机视觉与模式识别 · 计算机科学 2019-06-19 Jerome Revaud , Jon Almazan , Rafael Sampaio de Rezende , Cesar Roberto de Souza

Single image super-resolution (SISR) is an image processing task which obtains high-resolution (HR) image from a low-resolution (LR) image. Recently, due to the capability in feature extraction, a series of deep learning methods have…

图像与视频处理 · 电气工程与系统科学 2020-03-19 Bo Fu , Liyan Wang , Yuechu Wu , Yufeng Wu , Shilin Fu , Yonggong Ren