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This paper is on image and face super-resolution. The vast majority of prior work for this problem focus on how to increase the resolution of low-resolution images which are artificially generated by simple bilinear down-sampling (or in a…

Computer Vision and Pattern Recognition · Computer Science 2018-07-31 Adrian Bulat , Jing Yang , Georgios Tzimiropoulos

Typical person re-identification (re-ID) methods train a deep CNN to extract deep features and combine them with a distance metric for the final evaluation. In this work, we focus on exploiting the full information encoded in the deep…

Computer Vision and Pattern Recognition · Computer Science 2018-11-22 Yong Liu , Lin Shang , Andy Song

The existing face image super-resolution (FSR) algorithms usually train a specific model for a specific low input resolution for optimal results. By contrast, we explore in this work a unified framework that is trained once and then used to…

Computer Vision and Pattern Recognition · Computer Science 2023-06-07 Qiuyu Peng , Zifei Jiang , Yan Huang , Jingliang Peng

In recent years, face super-resolution (FSR) methods have achieved remarkable progress, generally maintaining high image fidelity and identity (ID) consistency under standard settings. However, in extreme degradation scenarios (e.g., scale…

Computer Vision and Pattern Recognition · Computer Science 2025-08-18 Jiarui Yang , Hang Guo , Wen Huang , Tao Dai , Shutao Xia

Deep learning techniques have revolutionized the fields of image restoration and image quality assessment in recent years. While image restoration methods typically utilize synthetically distorted training data for training, deep quality…

Image and Video Processing · Electrical Eng. & Systems 2023-11-29 Hakan Emre Gedik , Abhinau K. Venkataramanan , Alan C. Bovik

In this paper, we introduce a novel deep neural network suitable for multi-scale analysis and propose efficient model-agnostic methods that help the network extract information from high-frequency domains to reconstruct clearer images. Our…

Computer Vision and Pattern Recognition · Computer Science 2021-05-26 Hyungmin Roh , Myungjoo Kang

Fine-grained image retrieval (FGIR) is to learn visual representations that distinguish visually similar objects while maintaining generalization. Existing methods propose to generate discriminative features, but rarely consider the…

Computer Vision and Pattern Recognition · Computer Science 2024-04-25 Xin Jiang , Hao Tang , Rui Yan , Jinhui Tang , Zechao Li

In this paper, we propose a residual non-local attention network for high-quality image restoration. Without considering the uneven distribution of information in the corrupted images, previous methods are restricted by local convolutional…

Computer Vision and Pattern Recognition · Computer Science 2019-03-26 Yulun Zhang , Kunpeng Li , Kai Li , Bineng Zhong , Yun Fu

High dynamic range (HDR) imaging is an important task in image processing that aims to generate well-exposed images in scenes with varying illumination. Although existing multi-exposure fusion methods have achieved impressive results,…

Computer Vision and Pattern Recognition · Computer Science 2023-05-30 Jun Xiao , Qian Ye , Tianshan Liu , Cong Zhang , Kin-Man Lam

Although deep learning-based methods have achieved excellent performance on SAR ATR, the fact that it is difficult to acquire and label a lot of SAR images makes these methods, which originally performed well, perform weakly. This may be…

Image and Video Processing · Electrical Eng. & Systems 2023-08-23 Chenwei Wang , Siyi Luo , Jifang Pei , Yulin Huang , Yin Zhang , Jianyu Yang

Biometrics is the science of identifying an individual based on their intrinsic anatomical or behavioural characteristics, such as fingerprints, face, iris, gait, and voice. Iris recognition is one of the most successful methods because it…

Computer Vision and Pattern Recognition · Computer Science 2022-12-27 Daniel P. Benalcazar , David A. Benalcazar , Andres Valenzuela

Ultra-high-definition (UHD) image restoration aims to specifically solve the problem of quality degradation in ultra-high-resolution images. Recent advancements in this field are predominantly driven by deep learning-based innovations,…

Computer Vision and Pattern Recognition · Computer Science 2025-05-23 Liyan Wang , Weixiang Zhou , Cong Wang , Kin-Man Lam , Zhixun Su , Jinshan Pan

Methods that combine local and global features have recently shown excellent performance on multiple challenging deep image retrieval benchmarks, but their use of local features raises at least two issues. First, these local features simply…

Computer Vision and Pattern Recognition · Computer Science 2022-02-01 Philippe Weinzaepfel , Thomas Lucas , Diane Larlus , Yannis Kalantidis

Numerous image superresolution (SR) algorithms have been proposed for reconstructing high-resolution (HR) images from input images with lower spatial resolutions. However, effectively evaluating the perceptual quality of SR images remains a…

Image and Video Processing · Electrical Eng. & Systems 2020-04-15 Wei Zhou , Qiuping Jiang , Yuwang Wang , Zhibo Chen , Weiping Li

A data augmentation methodology is presented and applied to generate a large dataset of off-axis iris regions and train a low-complexity deep neural network. Although of low complexity the resulting network achieves a high level of accuracy…

Computer Vision and Pattern Recognition · Computer Science 2019-03-04 Viktor Varkarakis , Shabab Bazrafkan , Peter Corcoran

Low-light images suffer from severe noise and low illumination. Current deep learning models that are trained with real-world images have excellent noise reduction, but a ratio parameter must be chosen manually to complete the enhancement…

Image and Video Processing · Electrical Eng. & Systems 2020-04-23 Qingxu Fu , Xiaoguang Di , Yu Zhang

Person re-identification (re-ID) aims at matching images of the same person across camera views. Due to varying distances between cameras and persons of interest, resolution mismatch can be expected, which would degrade re-ID performance in…

Computer Vision and Pattern Recognition · Computer Science 2020-10-26 Yu-Jhe Li , Yun-Chun Chen , Yen-Yu Lin , Yu-Chiang Frank Wang

Facial expression recognition has gained significance as a means of imparting social robots with the capacity to discern the emotional states of users. The use of social robotics includes a variety of settings, including homes, nursing…

Computer Vision and Pattern Recognition · Computer Science 2026-05-05 F. Xavier Gaya-Morey , Silvia Ramis , Jose M. Buades-Rubio , Cristina Manresa-Yee

The non-uniform photoelectric response of infrared imaging systems results in fixed-pattern stripe noise being superimposed on infrared images, which severely reduces image quality. As the applications of degraded infrared images are…

Image and Video Processing · Electrical Eng. & Systems 2022-09-30 Zeshan Fayyaz , Daniel Platnick , Hannan Fayyaz , Nariman Farsad

In recent years, deep perceptual loss has been widely and successfully used to train machine learning models for many computer vision tasks, including image synthesis, segmentation, and autoencoding. Deep perceptual loss is a type of loss…

Computer Vision and Pattern Recognition · Computer Science 2024-07-04 Gustav Grund Pihlgren , Konstantina Nikolaidou , Prakash Chandra Chhipa , Nosheen Abid , Rajkumar Saini , Fredrik Sandin , Marcus Liwicki