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The goal of No-Reference Image Quality Assessment (NR-IQA) is to estimate the perceptual image quality in accordance with subjective evaluations, it is a complex and unsolved problem due to the absence of the pristine reference image. In…

图像与视频处理 · 电气工程与系统科学 2022-01-06 S. Alireza Golestaneh , Saba Dadsetan , Kris M. Kitani

Image Quality Assessment (IQA) models benefit significantly from semantic information, which allows them to treat different types of objects distinctly. Currently, leveraging semantic information to enhance IQA is a crucial research…

计算机视觉与模式识别 · 计算机科学 2024-05-21 Wensheng Pan , Timin Gao , Yan Zhang , Runze Hu , Xiawu Zheng , Enwei Zhang , Yuting Gao , Yutao Liu , Yunhang Shen , Ke Li , Shengchuan Zhang , Liujuan Cao , Rongrong Ji

Current full-reference image quality assessment (FR-IQA) methods often fuse features from reference and distorted images, overlooking that color and luminance distortions occur mainly at low frequencies, whereas edge and texture distortions…

图像与视频处理 · 电气工程与系统科学 2024-12-23 Xuekai Wei , Junyu Zhang , Qinlin Hu , Mingliang Zhou\\Yong Feng , Weizhi Xian , Huayan Pu , Sam Kwong

Scale-invariance is an open problem in many computer vision subfields. For example, object labels should remain constant across scales, yet model predictions diverge in many cases. This problem gets harder for tasks where the ground-truth…

计算机视觉与模式识别 · 计算机科学 2022-12-13 Oliver Wiedemann , Vlad Hosu , Shaolin Su , Dietmar Saupe

Development of perceptual image quality assessment (IQA) metrics has been of significant interest to computer vision community. The aim of these metrics is to model quality of an image as perceived by humans. Recent works in Full-reference…

图像与视频处理 · 电气工程与系统科学 2022-03-03 Saikat Dutta , Sourya Dipta Das , Nisarg A. Shah

Despite significant progress in no-reference image quality assessment (NR-IQA), dataset biases and reliance on subjective labels continue to hinder their generalization performance. We propose HiRQA (Hierarchical Ranking and Quality…

计算机视觉与模式识别 · 计算机科学 2026-05-28 Vaishnav Ramesh , Haining Wang , Md Jahidul Islam

Deep learning-based methods have significantly influenced the blind image quality assessment (BIQA) field, however, these methods often require training using large amounts of human rating data. In contrast, traditional knowledge-based…

计算机视觉与模式识别 · 计算机科学 2024-05-30 Zhangkai Ni , Yue Liu , Keyan Ding , Wenhan Yang , Hanli Wang , Shiqi Wang

We introduce a new learning strategy for image enhancement by recurrently training the same simple superresolution (SR) network multiple times. After initially training an SR network by using pairs of a corrupted low resolution (LR) image…

图像与视频处理 · 电气工程与系统科学 2019-07-29 Saem Park , Nojun Kwak

No-reference image quality assessment (NR-IQA) is a fundamental yet challenging task in low-level computer vision community. The difficulty is particularly pronounced for the limited information, for which the corresponding reference for…

计算机视觉与模式识别 · 计算机科学 2018-04-06 Kwan-Yee Lin , Guanxiang Wang

Objective image quality evaluation is a challenging task, which aims to measure the quality of a given image automatically. According to the availability of the reference images, there are Full-Reference and No-Reference IQA tasks,…

计算机视觉与模式识别 · 计算机科学 2022-03-24 Chao Zeng , Sam Kwong

Current no-reference image quality assessment (NR-IQA) models for enhanced images often struggle to generalize, as they tend to overfit to the distinct patterns of specific enhancement algorithms rather than evaluating genuine perceptual…

计算机视觉与模式识别 · 计算机科学 2026-03-23 Shiqi Gao , Kang Fu , Zitong Xu , Huiyu Duan , Xiongkuo Min , Jia Wang , Guangtao Zhai

No-reference image quality assessment (NR-IQA) has received increasing attention in the IQA community since reference image is not always available. Real-world images generally suffer from various types of distortion. Unfortunately,…

图像与视频处理 · 电气工程与系统科学 2020-01-07 Fu-Zhao Ou , Yuan-Gen Wang , Jin Li , Guopu Zhu , Sam Kwong

Conventional image quality metrics (IQMs), such as PSNR and SSIM, are designed for perceptually uniform gamma-encoded pixel values and cannot be directly applied to perceptually non-uniform linear high-dynamic-range (HDR) colors. Similarly,…

计算机视觉与模式识别 · 计算机科学 2024-05-02 Andrei Chubarau , Hyunjin Yoo , Tara Akhavan , James Clark

Measuring the perceptual quality of images automatically is an essential task in the area of computer vision, as degradations on image quality can exist in many processes from image acquisition, transmission to enhancing. Many Image Quality…

计算机视觉与模式识别 · 计算机科学 2022-05-24 Jing Wang , Haotian Fan , Xiaoxia Hou , Yitian Xu , Tao Li , Xuechao Lu , Lean Fu

To support the application scenarios where high-resolution (HR) images are urgently needed, various single image super-resolution (SISR) algorithms are developed. However, SISR is an ill-posed inverse problem, which may bring artifacts like…

图像与视频处理 · 电气工程与系统科学 2022-06-10 Zicheng Zhang , Wei Sun , Xiongkuo Min , Wenhan Zhu , Tao Wang , Wei Lu , Guangtao Zhai

One major problem of objective Image Quality Assessment (IQA) methods is the lack of linearity of their quality estimates with respect to scores expressed by human subjects. For this reason, usually IQA metrics undergo a calibration process…

计算机视觉与模式识别 · 计算机科学 2022-05-25 Elio D. Di Claudio , Paolo Giannitrapani , Giovanni Jacovitti

Image quality assessment (IQA) represents a pivotal challenge in image-focused technologies, significantly influencing the advancement trajectory of image processing and computer vision. Recently, IQA has witnessed a notable surge in…

计算机视觉与模式识别 · 计算机科学 2025-02-13 Chengqian Ma , Zhengyi Shi , Zhiqiang Lu , Shenghao Xie , Fei Chao , Yao Sui

Depth perception plays an essential role in the viewer experience for immersive virtual reality (VR) visual environments. However, previous research investigations in the depth quality of 3D/stereoscopic images are rather limited, and in…

计算机视觉与模式识别 · 计算机科学 2024-08-20 Wei Zhou , Zhou Wang

Unsupervised remote photoplethysmography (rPPG) promises to leverage unlabeled video data, but its potential is hindered by a critical challenge: training on low-quality "in-the-wild" videos severely degrades model performance. An essential…

计算机视觉与模式识别 · 计算机科学 2026-04-14 Tianyang Dai , Ming Chang , Yan Chen , Yang Hu

Single image super-resolution (SISR) is a challenging ill-posed problem that aims to up-sample a given low-resolution (LR) image to a high-resolution (HR) counterpart. Due to the difficulty in obtaining real LR-HR training pairs, recent…

图像与视频处理 · 电气工程与系统科学 2023-09-01 Reyhaneh Neshatavar , Mohsen Yavartanoo , Sanghyun Son , Kyoung Mu Lee