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Scientific images fundamentally differ from natural and AI-generated images in that they encode structured domain knowledge rather than merely depict visual scenes. Assessing their quality therefore requires evaluating not only perceptual…

Computer Vision and Pattern Recognition · Computer Science 2026-03-10 Wenzhe Li , Liang Chen , Junying Wang , Yijing Guo , Ye Shen , Farong Wen , Chunyi Li , Zicheng Zhang , Guangtao Zhai

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

Inspired by the free-energy brain theory, which implies that human visual system (HVS) tends to reduce uncertainty and restore perceptual details upon seeing a distorted image, we propose restorative adversarial net (RAN), a GAN-based model…

Computer Vision and Pattern Recognition · Computer Science 2017-12-18 Hongyu Ren , Diqi Chen , Yizhou Wang

Diffusion models have achieved remarkable success in image generation, yet their training is predominantly driven by full-reference objectives that enforce pixel-wise similarity to ground-truth images.Such supervision, while effective for…

Computer Vision and Pattern Recognition · Computer Science 2026-04-30 Yang Yang , Feifan Meng , Han Fang , Weiming Zhang

Image quality assessment (IQA) serves as the golden standard for all models' performance in nearly all computer vision fields. However, it still suffers from poor out-of-distribution generalization ability and expensive training costs. To…

Computer Vision and Pattern Recognition · Computer Science 2024-10-11 Kai Liu , Ziqing Zhang , Wenbo Li , Renjing Pei , Fenglong Song , Xiaohong Liu , Linghe Kong , Yulun Zhang

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…

Computer Vision and Pattern Recognition · Computer Science 2025-02-13 Chengqian Ma , Zhengyi Shi , Zhiqiang Lu , Shenghao Xie , Fei Chao , Yao Sui

Image quality assessment that aims at estimating the subject quality of images, builds models to evaluate the perceptual quality of the image in different applications. Based on the fact that the human visual system (HVS) is highly…

Image and Video Processing · Electrical Eng. & Systems 2020-12-22 Congmin Chen , Xuanqin Mou

Blind Image Quality Assessment (BIQA) has advanced significantly through deep learning, but the scarcity of large-scale labeled datasets remains a challenge. While synthetic data offers a promising solution, models trained on existing…

Computer Vision and Pattern Recognition · Computer Science 2026-01-05 Aobo Li , Jinjian Wu , Yongxu Liu , Leida Li , Weisheng Dong

Reasoning-based image quality assessment (IQA) models trained through reinforcement learning (RL) exhibit exceptional generalization, yet the underlying mechanisms and critical factors driving this capability remain underexplored in current…

Computer Vision and Pattern Recognition · Computer Science 2026-03-04 Shijie Zhao , Xuanyu Zhang , Weiqi Li , Junlin Li , Li Zhang , Tianfan Xue , Jian Zhang

Year after year, the demand for ever-better smartphone photos continues to grow, in particular in the domain of portrait photography. Manufacturers thus use perceptual quality criteria throughout the development of smartphone cameras. This…

Computer Vision and Pattern Recognition · Computer Science 2023-04-13 Nicolas Chahine , Ana-Stefania Calarasanu , Davide Garcia-Civiero , Theo Cayla , Sira Ferradans , Jean Ponce

Blind image quality assessment (BIQA) remains challenging due to the diversity of distortion and image content variation, which complicate the distortion patterns crossing different scales and aggravate the difficulty of the regression…

Image and Video Processing · Electrical Eng. & Systems 2023-11-06 Qingyi Pan , Ning Guo , Letu Qingge , Jingyi Zhang , Pei Yang

Traditional in the wild image quality assessment (IQA) models are generally trained with the quality labels of mean opinion score (MOS), while missing the rich subjective quality information contained in the quality ratings, for example,…

Computer Vision and Pattern Recognition · Computer Science 2024-09-10 Xiongkuo Min , Yixuan Gao , Yuqin Cao , Guangtao Zhai , Wenjun Zhang , Huifang Sun , Chang Wen Chen

Due to the subjective nature of image quality assessment (IQA), assessing which image has better quality among a sequence of images is more reliable than assigning an absolute mean opinion score for an image. Thus, IQA models are evaluated…

Computer Vision and Pattern Recognition · Computer Science 2024-01-22 Zewen Chen , Juan Wang , Bing Li , Chunfeng Yuan , Weiming Hu , Junxian Liu , Peng Li , Yan Wang , Youqun Zhang , Congxuan Zhang

Video quality assessment (VQA) is vital for computer vision tasks, but existing approaches face major limitations: full-reference (FR) metrics require clean reference videos, and most no-reference (NR) models depend on training on costly…

Computer Vision and Pattern Recognition · Computer Science 2025-11-07 Kylie Cancilla , Alexander Moore , Amar Saini , Carmen Carrano

Image Quality Assessment (IQA) models are employed in many practical image and video processing pipelines to reduce storage, minimize transmission costs, and improve the Quality of Experience (QoE) of millions of viewers. These models are…

Computer Vision and Pattern Recognition · Computer Science 2025-07-24 Krishna Srikar Durbha , Asvin Kumar Venkataramanan , Rajesh Sureddi , Alan C. Bovik

An accurate computational model for image quality assessment (IQA) benefits many vision applications, such as image filtering, image processing, and image generation. Although the study of face images is an important subfield in computer…

Computer Vision and Pattern Recognition · Computer Science 2023-08-01 Shaolin Su , Hanhe Lin , Vlad Hosu , Oliver Wiedemann , Jinqiu Sun , Yu Zhu , Hantao Liu , Yanning Zhang , Dietmar Saupe

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

Computational models for blind image quality assessment (BIQA) are typically trained in well-controlled laboratory environments with limited generalizability to realistically distorted images. Similarly, BIQA models optimized for images…

Computer Vision and Pattern Recognition · Computer Science 2020-05-21 Weixia Zhang , Kede Ma , Guangtao Zhai , Xiaokang Yang

With the rapid advancement of Vision Language Models (VLMs), VLM-based Image Quality Assessment (IQA) seeks to describe image quality linguistically to align with human expression and capture the multifaceted nature of IQA tasks. However,…

Computer Vision and Pattern Recognition · Computer Science 2025-12-01 Zhiyuan You , Jinjin Gu , Xin Cai , Zheyuan Li , Kaiwen Zhu , Chao Dong , Tianfan Xue

Blind image quality assessment (BIQA) is a task that predicts the perceptual quality of an image without its reference. Research on BIQA attracts growing attention due to the increasing amount of user-generated images and emerging mobile…

Image and Video Processing · Electrical Eng. & Systems 2023-03-24 Zhanxuan Mei , Yun-Cheng Wang , Xingze He , Yong Yan , C. -C. Jay Kuo