A Survey on Image Quality Assessment: Insights, Analysis, and Future Outlook
Chengqian Ma, Zhengyi Shi, Zhiqiang Lu, Shenghao Xie, Fei Chao, Yao Sui
TL;DR
This survey comprehensively catalogs IQA methods across general and specific scenarios, organizing approaches by SIQA/OIQA and FR/RR/NR categories. It covers traditional statistics, NSS, and ML methods as well as CNN- and Transformer-based models, and discusses training frameworks to address data scarcity. The analysis highlights that while DL-based IQA achieves strong performance, classic metrics like PSNR and SSIM remain popular for their simplicity and interpretability, and there is a need for distortion-aware, domain-specific metrics. The authors argue for practical IQA development that aligns with real-world application requirements, emphasizing interpretability, user-centric evaluation, and targeted improvements for medical, dehazing, portrait, and deburring scenarios.
Abstract
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 innovative research efforts, driven by the emergence of novel architectural paradigms and sophisticated computational techniques. This survey delivers an extensive analysis of contemporary IQA methodologies, organized according to their application scenarios, serving as a beneficial reference for both beginners and experienced researchers. We analyze the advantages and limitations of current approaches and suggest potential future research pathways. The survey encompasses both general and specific IQA methodologies, including conventional statistical measures, machine learning techniques, and cutting-edge deep learning models such as convolutional neural networks (CNNs) and Transformer models. The analysis within this survey highlights the necessity for distortion-specific IQA methods tailored to various application scenarios, emphasizing the significance of practicality, interpretability, and ease of implementation in future developments.
