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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

Image Quality Assessment (IQA) is a fundamental task in computer vision that has witnessed remarkable progress with deep neural networks. Inspired by the characteristics of the human visual system, existing methods typically use a…

Computer Vision and Pattern Recognition · Computer Science 2023-08-08 Chaofeng Chen , Jiadi Mo , Jingwen Hou , Haoning Wu , Liang Liao , Wenxiu Sun , Qiong Yan , Weisi Lin

In this work, we introduce Gradient Siamese Network (GSN) for image quality assessment. The proposed method is skilled in capturing the gradient features between distorted images and reference images in full-reference image quality…

Image and Video Processing · Electrical Eng. & Systems 2022-08-09 Heng Cong , Lingzhi Fu , Rongyu Zhang , Yusheng Zhang , Hao Wang , Jiarong He , Jin Gao

Several metrics exist to quantify the similarity between images, but they are inefficient when it comes to measure the similarity of highly distorted images. In this work, we propose to empirically investigate perceptual metrics based on…

Computer Vision and Pattern Recognition · Computer Science 2022-02-18 Rémi Kazmierczak , Gianni Franchi , Nacim Belkhir , Antoine Manzanera , David Filliat

Digital images contain a lot of redundancies, therefore, compression techniques are applied to reduce the image size without loss of reasonable image quality. Same become more prominent in the case of videos which contains image sequences…

Computer Vision and Pattern Recognition · Computer Science 2023-05-17 Nisar Ahmed , Hafiz Muhammad Shahzad Asif , Hassan Khalid

Face recognition has made significant progress in recent years due to deep convolutional neural networks (CNN). In many face recognition (FR) scenarios, face images are acquired from a sequence with huge intra-variations. These…

Computer Vision and Pattern Recognition · Computer Science 2024-01-23 Baoyun Peng , Min Liu , Zhaoning Zhang , Kai Xu , Dongsheng Li

We propose a novel certified defense method for Image Quality Assessment (IQA) models based on randomized smoothing with noise applied in the feature space rather than the input space. Unlike prior approaches that inject Gaussian noise…

Computer Vision and Pattern Recognition · Computer Science 2025-08-08 Ekaterina Shumitskaya , Dmitriy Vatolin , Anastasia Antsiferova

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

Perceptual image restoration seeks for high-fidelity images that most likely degrade to given images. For better visual quality, previous work proposed to search for solutions within the natural image manifold, by exploiting the latent…

Image and Video Processing · Electrical Eng. & Systems 2021-03-05 Chaoyi Han , Yiping Duan , Xiaoming Tao , Jianhua Lu

Deep Video Quality Assessment (VQA) methods have shown impressive high-performance capabilities. Notably, no-reference (NR) VQA methods play a vital role in situations where obtaining reference videos is restricted or not feasible.…

Image and Video Processing · Electrical Eng. & Systems 2024-07-31 Xiaoheng Tan , Jiabin Zhang , Yuhui Quan , Jing Li , Yajing Wu , Zilin Bian

Diffusion-based models have recently revolutionized image generation, achieving unprecedented levels of fidelity. However, consistent generation of high-quality images remains challenging partly due to the lack of conditioning mechanisms…

Computer Vision and Pattern Recognition · Computer Science 2025-03-18 Khaled Abud , Sergey Lavrushkin , Alexey Kirillov , Dmitriy Vatolin

Reasoning-induced vision-language models (VLMs) advance image quality assessment (IQA) with textual reasoning, yet their scalar scores often lack sensitivity and collapse to a few values, so-called discrete collapse. We introduce ME-IQA, a…

Computer Vision and Pattern Recognition · Computer Science 2026-03-24 Kanglong Fan , Tianhe Wu , Wen Wen , Jianzhao Liu , Le Yang , Yabin Zhang , Yiting Liao , Junlin Li , Li Zhang

Embodied AI has developed rapidly in recent years, but it is still mainly deployed in laboratories, with various distortions in the Real-world limiting its application. Traditionally, Image Quality Assessment (IQA) methods are applied to…

Computer Vision and Pattern Recognition · Computer Science 2025-10-15 Chunyi Li , Jiaohao Xiao , Jianbo Zhang , Farong Wen , Zicheng Zhang , Yuan Tian , Xiangyang Zhu , Xiaohong Liu , Zhengxue Cheng , Weisi Lin , Guangtao Zhai

Learning-based image quality assessment (IQA) has made remarkable progress in the past decade, but nearly all consider the two key components -- model and data -- in isolation. Specifically, model-centric IQA focuses on developing…

Computer Vision and Pattern Recognition · Computer Science 2023-12-11 Peibei Cao , Dingquan Li , Kede Ma

For full-reference image quality assessment (FR-IQA) using deep-learning approaches, the perceptual similarity score between a distorted image and a reference image is typically computed as a distance measure between features extracted from…

Computer Vision and Pattern Recognition · Computer Science 2025-01-14 Abhijay Ghildyal , Nabajeet Barman , Saman Zadtootaghaj

Blind Image Quality Assessment (BIQA) aims to evaluate image quality in line with human perception, without reference benchmarks. Currently, deep learning BIQA methods typically depend on using features from high-level tasks for transfer…

Computer Vision and Pattern Recognition · Computer Science 2024-01-23 Xudong Li , Jingyuan Zheng , Runze Hu , Yan Zhang , Ke Li , Yunhang Shen , Xiawu Zheng , Yutao Liu , ShengChuan Zhang , Pingyang Dai , Rongrong Ji

Performance of blind image quality assessment (BIQA) models has been significantly boosted by end-to-end optimization of feature engineering and quality regression. Nevertheless, due to the distributional shift between images simulated in…

Computer Vision and Pattern Recognition · Computer Science 2021-04-07 Weixia Zhang , Kede Ma , Guangtao Zhai , Xiaokang Yang

There are many factors affecting visual face recognition, such as low resolution images, aging, illumination and pose variance, etc. One of the most important problem is low resolution face images which can result in bad performance on face…

Computer Vision and Pattern Recognition · Computer Science 2019-05-17 Bayram Bayramli , Usman Ali , Te Qi , Hongtao Lu

Blind or no-reference (NR) perceptual picture quality prediction is a difficult, unsolved problem of great consequence to the social and streaming media industries that impacts billions of viewers daily. Unfortunately, popular NR prediction…

Computer Vision and Pattern Recognition · Computer Science 2019-12-24 Zhenqiang Ying , Haoran Niu , Praful Gupta , Dhruv Mahajan , Deepti Ghadiyaram , Alan Bovik

In this paper we develop FaceQgen, a No-Reference Quality Assessment approach for face images based on a Generative Adversarial Network that generates a scalar quality measure related with the face recognition accuracy. FaceQgen does not…

Computer Vision and Pattern Recognition · Computer Science 2022-01-04 Javier Hernandez-Ortega , Julian Fierrez , Ignacio Serna , Aythami Morales