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Objective:To develop a no-reference image quality assessment method using automated distortion recognition to boost MRI-guided radiotherapy precision.Methods:We analyzed 106,000 MR images from 10 patients with liver metastasis,captured with…

Image and Video Processing · Electrical Eng. & Systems 2024-12-11 Zilin Wang , Shengqi Chen , Jianrong Dai , Shirui Qin , Ying Cao , Ruiao Zhao , Guohua Wu , Yuan Tang , Jiayun Chen

AI-based image enhancement techniques have been widely adopted in various visual applications, significantly improving the perceptual quality of user-generated content (UGC). However, the lack of specialized quality assessment models has…

Computer Vision and Pattern Recognition · Computer Science 2025-08-12 Shushi Wang , Chunyi Li , Zicheng Zhang , Han Zhou , Wei Dong , Jun Chen , Guangtao Zhai , Xiaohong Liu

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

No-Reference Point Cloud Quality Assessment (NR-PCQA) aims to objectively assess the human perceptual quality of point clouds without relying on pristine-quality point clouds for reference. It is becoming increasingly significant with the…

Computer Vision and Pattern Recognition · Computer Science 2024-11-13 Ziyu Shan , Yujie Zhang , Yipeng Liu , Yiling Xu

We introduce the AIM 2024 UHD-IQA Challenge, a competition to advance the No-Reference Image Quality Assessment (NR-IQA) task for modern, high-resolution photos. The challenge is based on the recently released UHD-IQA Benchmark Database,…

Computer Vision and Pattern Recognition · Computer Science 2024-09-25 Vlad Hosu , Marcos V. Conde , Lorenzo Agnolucci , Nabajeet Barman , Saman Zadtootaghaj , Radu Timofte

Light field image quality assessment (LFI-QA) is a significant and challenging research problem. It helps to better guide light field acquisition, processing and applications. However, only a few objective models have been proposed and none…

Image and Video Processing · Electrical Eng. & Systems 2022-02-21 Likun Shi , Wei Zhou , Zhibo Chen , Jinglin Zhang

Image Quality Assessment (IQA) models are increasingly deployed as perceptual critics to guide generative models and image restoration. This role demands not only accurate scores but also actionable, localized feedback. However, current…

Computer Vision and Pattern Recognition · Computer Science 2026-04-21 Xudong Li , Jiaxi Tan , Ziyin Zhou , Yan Zhong , Zihao Huang , Jingyuan Zheng , Yan Zhang , Xiawu Zheng , Rongrong Ji

The content and distortion are widely recognized as the two primary factors affecting the visual quality of an image. While existing No-Reference Image Quality Assessment (NR-IQA) methods have modeled these factors, they fail to capture the…

Computer Vision and Pattern Recognition · Computer Science 2025-04-08 Shuai Liu , Qingyu Mao , Chao Li , Jiacong Chen , Fanyang Meng , Yonghong Tian , Yongsheng Liang

Recent advances in reasoning-induced image quality assessment (IQA) have demonstrated the power of reinforcement learning to rank (RL2R) for training vision-language models (VLMs) to assess perceptual quality. However, existing approaches…

Computer Vision and Pattern Recognition · Computer Science 2026-04-14 Xiangyong Chen , Xiaochuan Lin , Haoran Liu , Xuan Li , Yichen Su , Xiangwei Guo

Image Quality Assessment (IQA) is essential in various Computer Vision tasks such as image deblurring and super-resolution. However, most IQA methods require reference images, which are not always available. While there are some…

Image and Video Processing · Electrical Eng. & Systems 2024-05-06 Han Cui , Alfredo De Goyeneche , Efrat Shimron , Boyuan Ma , Michael Lustig

Automatically learned quality assessment for images has recently become a hot topic due to its usefulness in a wide variety of applications such as evaluating image capture pipelines, storage techniques and sharing media. Despite the…

Computer Vision and Pattern Recognition · Computer Science 2018-07-04 Hossein Talebi , Peyman Milanfar

No-reference (NR) perceptual video quality assessment (VQA) is a complex, unsolved, and important problem to social and streaming media applications. Efficient and accurate video quality predictors are needed to monitor and guide the…

Computer Vision and Pattern Recognition · Computer Science 2022-02-28 Zhenqiang Ying , Maniratnam Mandal , Deepti Ghadiyaram , Alan Bovik

Face image quality assessment (FIQA) plays a critical role in face recognition and verification systems, especially in uncontrolled, real-world environments. Although several methods have been proposed, general-purpose no-reference image…

Computer Vision and Pattern Recognition · Computer Science 2025-09-15 MohammadAli Hamidi , Hadi Amirpour , Luigi Atzori , Christian Timmerer

Most modern No-Reference Image-Quality Assessment (NR-IQA) metrics are based on neural networks vulnerable to adversarial attacks. Attacks on such metrics lead to incorrect image/video quality predictions, which poses significant risks,…

Image and Video Processing · Electrical Eng. & Systems 2024-11-20 Ekaterina Shumitskaya , Mikhail Pautov , Dmitriy Vatolin , Anastasia Antsiferova

It is an important task to faithfully evaluate the perceptual quality of output images in many applications such as image compression, image restoration and multimedia streaming. A good image quality assessment (IQA) model should not only…

Computer Vision and Pattern Recognition · Computer Science 2023-07-19 Wufeng Xue , Lei Zhang , Xuanqin Mou , Alan C. Bovik

No-Reference Image Quality Assessment for distorted images has always been a challenging problem due to image content variance and distortion diversity. Previous IQA models mostly encode explicit single-quality features of synthetic images…

Image and Video Processing · Electrical Eng. & Systems 2024-11-27 Jingtong Yue , Xin Lin , Zijiu Yang , Chao Ren

Blind image quality assessment (BIQA) aims to predict perceptual image quality scores without access to reference images. State-of-the-art BIQA methods typically require subjects to score a large number of images to train a robust model.…

Computer Vision and Pattern Recognition · Computer Science 2019-04-25 Fei Gao , Dacheng Tao , Xinbo Gao , Xuelong Li

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…

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…

Computer Vision and Pattern Recognition · Computer Science 2022-12-13 Oliver Wiedemann , Vlad Hosu , Shaolin Su , Dietmar Saupe

Blind 360{\deg}image quality assessment (IQA) aims to predict perceptual quality for panoramic images without a pristine reference. Unlike conventional planar images, 360{\deg}content in immersive environments restricts viewers to a limited…

Computer Vision and Pattern Recognition · Computer Science 2026-03-17 Yujia Wang , Yuyan Li , Jiuming Liu , Fang-Lue Zhang , Xinhu Zheng , Neil. A Dodgson