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This paper reports on the NTIRE 2021 challenge on perceptual image quality assessment (IQA), held in conjunction with the New Trends in Image Restoration and Enhancement workshop (NTIRE) workshop at CVPR 2021. As a new type of image…

We propose a no-reference image quality assessment (NR-IQA) approach that learns from rankings (RankIQA). To address the problem of limited IQA dataset size, we train a Siamese Network to rank images in terms of image quality by using…

Computer Vision and Pattern Recognition · Computer Science 2017-07-27 Xialei Liu , Joost van de Weijer , Andrew D. Bagdanov

Automatic Perceptual Image Quality Assessment is a challenging problem that impacts billions of internet, and social media users daily. To advance research in this field, we propose a Mixture of Experts approach to train two separate…

Computer Vision and Pattern Recognition · Computer Science 2023-05-30 Avinab Saha , Sandeep Mishra , Alan C. Bovik

Images with different resolutions are ubiquitous in public person re-identification (ReID) datasets and real-world scenes, it is thus crucial for a person ReID model to handle the image resolution variations for improving its generalization…

Computer Vision and Pattern Recognition · Computer Science 2018-10-25 Zijie Zhuang , Haizhou Ai , Long Chen , Chong Shang

Image quality assessment (IQA) algorithm aims to quantify the human perception of image quality. Unfortunately, there is a performance drop when assessing the distortion images generated by generative adversarial network (GAN) with…

Computer Vision and Pattern Recognition · Computer Science 2022-04-25 Shanshan Lao , Yuan Gong , Shuwei Shi , Sidi Yang , Tianhe Wu , Jiahao Wang , Weihao Xia , Yujiu Yang

Image Quality Assessment (IQA) constitutes a fundamental task within the field of computer vision, yet it remains an unresolved challenge, owing to the intricate distortion conditions, diverse image contents, and limited availability of…

Computer Vision and Pattern Recognition · Computer Science 2023-08-24 Kangmin Xu , Liang Liao , Jing Xiao , Chaofeng Chen , Haoning Wu , Qiong Yan , Weisi Lin

Deep clustering has shown its promising capability in joint representation learning and clustering via deep neural networks. Despite the significant progress, the existing deep clustering works mostly utilize some distribution-based…

Computer Vision and Pattern Recognition · Computer Science 2023-10-18 Yuankun Xu , Dong Huang , Chang-Dong Wang , Jian-Huang Lai

Conditional image generation is the task of generating diverse images using class label information. Although many conditional Generative Adversarial Networks (GAN) have shown realistic results, such methods consider pairwise relations…

Computer Vision and Pattern Recognition · Computer Science 2021-02-04 Minguk Kang , Jaesik Park

Convolutional Neural Network is good at image classification. However, it is found to be vulnerable to image quality degradation. Even a small amount of distortion such as noise or blur can severely hamper the performance of these CNN…

Computer Vision and Pattern Recognition · Computer Science 2020-08-07 Md Tahmid Hossain , Shyh Wei Teng , Dengsheng Zhang , Suryani Lim , Guojun Lu

Blind image quality assessment is a challenging task particularly due to the unavailability of reference information. Training a deep neural network requires a large amount of training data which is not readily available for image quality.…

Computer Vision and Pattern Recognition · Computer Science 2023-05-17 Nisar Ahmed , H. M. Shahzad Asif , Abdul Rauf Bhatti , Atif Khan

In recent years, the widespread use of deep neural networks (DNNs) has facilitated great improvements in performance for computer vision tasks like image classification and object recognition. In most realistic computer vision applications,…

Computer Vision and Pattern Recognition · Computer Science 2019-08-27 Tejas Borkar , Lina Karam

Recently, representation learning with contrastive learning algorithms has been successfully applied to challenging unlabeled datasets. However, these methods are unable to distinguish important features from unimportant ones under simply…

Computer Vision and Pattern Recognition · Computer Science 2024-08-12 Toshiyuki Oshima , Kentaro Takagi , Kouta Nakata

Recovering a high-quality image from noisy indirect measurements is an important problem with many applications. For such inverse problems, supervised deep convolutional neural network (CNN)-based denoising methods have shown strong…

Image and Video Processing · Electrical Eng. & Systems 2020-09-16 Allard A. Hendriksen , Daniel M. Pelt , K. Joost Batenburg

Convolutional neural networks (CNNs) have achieved significant success in image classification by utilizing large-scale datasets. However, it is still of great challenge to learn from scratch on small-scale datasets efficiently and…

Computer Vision and Pattern Recognition · Computer Science 2022-06-14 Yilu Guo , Shicai Yang , Weijie Chen , Liang Ma , Di Xie , Shiliang Pu

Image quality is an important practical challenge that is often overlooked in the design of machine vision systems. Commonly, machine vision systems are trained and tested on high quality image datasets, yet in practical applications the…

Computer Vision and Pattern Recognition · Computer Science 2016-04-25 Samuel Dodge , Lina Karam

This paper is concerned with contrastive learning (CL) for low-level image restoration and enhancement tasks. We propose a new label-efficient learning paradigm based on residuals, residual contrastive learning (RCL), and derive an…

Computer Vision and Pattern Recognition · Computer Science 2022-04-28 Nanqing Dong , Matteo Maggioni , Yongxin Yang , Eduardo Pérez-Pellitero , Ales Leonardis , Steven McDonagh

Convolutional neural networks (CNNs) have achieved superhuman performance in multiple vision tasks, especially image classification. However, unlike humans, CNNs leverage spurious features, such as background information to make decisions.…

Computer Vision and Pattern Recognition · Computer Science 2022-10-07 Ke Wang , Harshitha Machiraju , Oh-Hyeon Choung , Michael Herzog , Pascal Frossard

Blind image quality assessment (BIQA) aims to automatically evaluate the perceived quality of a single image, whose performance has been improved by deep learning-based methods in recent years. However, the paucity of labeled data somewhat…

Computer Vision and Pattern Recognition · Computer Science 2023-03-24 Kai Zhao , Kun Yuan , Ming Sun , Mading Li , Xing Wen

We report the development of deep learning coherent electron diffractive imaging at sub-angstrom resolution using convolutional neural networks (CNNs) trained with only simulated data. We experimentally demonstrate this method by applying…

Materials Science · Physics 2022-04-19 Dillan J. Chang , Colum M. O'Leary , Cong Su , Salman Kahn , Alex Zettl , Jim Ciston , Peter Ercius , Jianwei Miao

In this paper, we present CLCC, a novel contrastive learning framework for color constancy. Contrastive learning has been applied for learning high-quality visual representations for image classification. One key aspect to yield useful…

Computer Vision and Pattern Recognition · Computer Science 2021-06-10 Yi-Chen Lo , Chia-Che Chang , Hsuan-Chao Chiu , Yu-Hao Huang , Chia-Ping Chen , Yu-Lin Chang , Kevin Jou
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