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Image Quality Assessment (IQA) is of great value in the workflow of Magnetic Resonance Imaging (MRI)-based analysis. Blind IQA (BIQA) methods are especially required since high-quality reference MRI images are usually not available.…

Image and Video Processing · Electrical Eng. & Systems 2021-07-16 Kehan Qi , Haoran Li , Chuyu Rong , Yu Gong , Cheng Li , Hairong Zheng , Shanshan Wang

Image quality assessment (IQA) aims to estimate human perception based image visual quality. Although existing deep neural networks (DNNs) have shown significant effectiveness for tackling the IQA problem, it still needs to improve the…

Image and Video Processing · Electrical Eng. & Systems 2020-12-04 Wei Zhou , Zhibo Chen

No reference image quality assessment (NR-IQA) is a task to estimate the perceptual quality of an image without its corresponding original image. It is even more difficult to perform this task in a zero-shot manner, i.e., without…

Computer Vision and Pattern Recognition · Computer Science 2023-08-28 Takamichi Miyata

Image Quality Assessment (IQA) aims to evaluate the perceptual quality of images based on human subjective perception. Existing methods generally combine multiscale features to achieve high performance, but most rely on straightforward…

Computer Vision and Pattern Recognition · Computer Science 2025-06-24 Chenyue Song , Chen Hui , Wei Zhang , Haiqi Zhu , Shaohui Liu , Hong Huang , Feng Jiang

Image quality assessment (IQA) forms a natural and often straightforward undertaking for humans, yet effective automation of the task remains highly challenging. Recent metrics from the deep learning community commonly compare image pairs…

Computer Vision and Pattern Recognition · Computer Science 2022-11-11 William Thong , Jose Costa Pereira , Sarah Parisot , Ales Leonardis , Steven McDonagh

Blind Image Quality Assessment (BIQA) aims to develop methods that estimate the quality scores of images in the absence of a reference image. In this paper, we approach BIQA from a distortion identification perspective, where our primary…

Computer Vision and Pattern Recognition · Computer Science 2024-09-12 Sepehr Kazemi Ranjbar , Emad Fatemizadeh

No-reference image quality assessment (NR-IQA) aims to quantify how humans perceive visual distortions of digital images without access to their undistorted references. NR-IQA models are extensively studied in computational vision, and are…

Computer Vision and Pattern Recognition · Computer Science 2022-10-04 Weixia Zhang , Dingquan Li , Xiongkuo Min , Guangtao Zhai , Guodong Guo , Xiaokang Yang , Kede Ma

No-Reference Image Quality Assessment (NR-IQA) aims to estimate perceptual quality without access to a reference image of pristine quality. Learning an NR-IQA model faces a fundamental bottleneck: its need for a large number of costly human…

Computer Vision and Pattern Recognition · Computer Science 2026-03-18 Mahdi Naseri , Zhou Wang

Traditional image quality assessment (IQA) methods rely on mean opinion scores (MOS), which are resource-intensive to collect and fail to provide interpretable, localized feedback on specific image distortions. We overcome these limitations…

Computer Vision and Pattern Recognition · Computer Science 2026-05-05 Fadeel Sher Khan , Long N. Le , Abhinau K. Venkataramanan , Seok-Jun Lee , Hamid R. Sheikh

Image quality assessment (IQA) focuses on the perceptual visual quality of images, playing a crucial role in downstream tasks such as image reconstruction, compression, and generation. The rapid advancement of multi-modal large language…

Computer Vision and Pattern Recognition · Computer Science 2025-05-26 Weiqi Li , Xuanyu Zhang , Shijie Zhao , Yabin Zhang , Junlin Li , Li Zhang , Jian Zhang

Contemporary no-reference image quality assessment (NR-IQA) models can effectively quantify perceived image quality, often achieving strong correlations with human perceptual scores on standard IQA benchmarks. Yet, limited efforts have been…

Computer Vision and Pattern Recognition · Computer Science 2025-01-16 Weixia Zhang , Dingquan Li , Guangtao Zhai , Xiaokang Yang , Kede Ma

No-Reference Image Quality Assessment (NR-IQA) aims to predict image quality scores consistent with human perception without relying on pristine reference images, serving as a crucial component in various visual tasks. Ensuring the…

Computer Vision and Pattern Recognition · Computer Science 2024-04-29 Chenxi Yang , Yujia Liu , Dingquan Li , Tingting Jiang

The goal of No-Reference Image Quality Assessment (NR-IQA) is to predict the perceptual quality of an image in line with its subjective evaluation. To put the NR-IQA models into practice, it is essential to study their potential loopholes…

Computer Vision and Pattern Recognition · Computer Science 2024-02-29 Yu Ran , Ao-Xiang Zhang , Mingjie Li , Weixuan Tang , Yuan-Gen Wang

Generally, humans are more skilled at perceiving differences between high-quality (HQ) and low-quality (LQ) images than directly judging the quality of a single LQ image. This situation also applies to image quality assessment (IQA).…

Computer Vision and Pattern Recognition · Computer Science 2022-03-01 Guanghao Yin , Wei Wang , Zehuan Yuan , Chuchu Han , Wei Ji , Shouqian Sun , Changhu Wang

Image Quality Assessment (IQA) with references plays an important role in optimizing and evaluating computer vision tasks. Traditional methods assume that all pixels of the reference and test images are fully aligned. Such Aligned-Reference…

Computer Vision and Pattern Recognition · Computer Science 2024-12-30 Keke Zhang , Weiling Chen , Tiesong Zhao , Zhou Wang

Image Quality Assessment (IQA) remains an unresolved challenge in computer vision due to complex distortions, diverse image content, and limited data availability. Existing Blind IQA (BIQA) methods largely rely on extensive human…

Computer Vision and Pattern Recognition · Computer Science 2025-09-23 Xudong Li , Zihao Huang , Yan Zhang , Yunhang Shen , Ke Li , Xiawu Zheng , Liujuan Cao , Rongrong Ji

Automatic perception of image quality is a challenging problem that impacts billions of Internet and social media users daily. To advance research in this field, we propose a no-reference image quality assessment (NR-IQA) method termed…

Computer Vision and Pattern Recognition · Computer Science 2024-05-08 Zhen Zhang

No-reference point cloud quality assessment (NR-PCQA) aims to automatically evaluate the perceptual quality of distorted point clouds without available reference, which have achieved tremendous improvements due to the utilization of deep…

Computer Vision and Pattern Recognition · Computer Science 2024-03-28 Ziyu Shan , Yujie Zhang , Qi Yang , Haichen Yang , Yiling Xu , Jenq-Neng Hwang , Xiaozhong Xu , Shan Liu

The goal in a blind image quality assessment (BIQA) model is to simulate the process of evaluating images by human eyes and accurately assess the quality of the image. Although many approaches effectively identify degradation, they do not…

Computer Vision and Pattern Recognition · Computer Science 2021-10-14 Guangyi Yang , Yang Zhan. , Yuxuan Wang

Existing full-reference image quality assessment (FR-IQA) methods achieve high-precision evaluation by analysing feature differences between reference and distorted images. However, their performance is constrained by the quality of the…

Computer Vision and Pattern Recognition · Computer Science 2026-02-23 Xuting Lan , Mingliang Zhou , Xuekai Wei , Jielu Yan , Yueting Huang , Huayan Pu , Jun Luo , Weijia Jia