摘要
户外视觉系统极易受到雾霾等恶劣天气影响,采集到的图像/视频质量严重下降,这不仅影响人眼的主观感受,也给后续的智能化分析带来严峻挑战.近年来,学者们将深度学习应用于图像去雾领域,取得了诸多的研究成果.但是雾霾图像场景复杂多变、降质因素众多,这对去雾算法的泛化能力提出了很高的要求.本文主要总结了近年来基于深度学习的单幅图像去雾技术研究进展.从先验知识和物理模型、映射关系建模、数据样本、知识迁移学习等角度出发,介绍了现有算法的研究思路、具体特点、优势与不足.尤其侧重于近两年来新出现的训练策略和网络结构,如元学习、小样本学习、域自适应、Transformer等.另外,本文在公共数据集上对比了各种代表性去雾算法的主客观性能、模型复杂度等,尤其是分析了去雾后的图像对于后续目标检测任务的影响,更全面地评价了现有算法性能的优劣,并探讨了未来可能的研究方向.
Vision-based outdoor systems are highly susceptible to severe weather such as haze. The quality of the collected images in the hazy environments is seriously degraded, which affects subjective perception and brings challenges to the subsequent intelligent processing tasks. In recent years, deep learning has been applied to single image dehazing and achieved promising results. However, the hazy scenes are complex and unpredictable, which puts a high demand on the generalization ability of the dehazing methods. In this paper, we summarize the recent deep-learning-based single-image dehazing methods. The advantages and disadvantages of these methods are analyzed in terms of network mapping relationships,learning methods, training datasets, and knowledge transfer. In particular, we focus on new training strategies and network structures that have emerged in the last few years, such as meta-learning, few-shot learning, domain adaption, and Transformer. In addition, the subjective and objective performances of various representative dehazing methods are compared on several public datasets. Further, the impact of the dehazed images on the performance of subsequent object detection tasks is analyzed and evaluated comprehensively. We also provide the computational complexity and running time of these methods. Finally, the conclusions and future tendency of single-image dehazing are drawn.
作者
贾童瑶
卓力
李嘉锋
张菁
JIA Tong-yao;ZHUO Li;LI Jia-feng;ZHANG Jing(Faculty of Information Technology,Beijing University of Technology,Beijing 100124,China;Beijing Key Laboratory of Computational Intelligence and Intelligent System,Beijing University of Technology,Beijing 100124,China)
出处
《电子学报》
EI
CAS
CSCD
北大核心
2023年第1期231-245,共15页
Acta Electronica Sinica
基金
国家自然科学基金(No.61871006,No.61971016)
北京市教育委员会科学研究计划项目资助(No.KZ202210005007,No.KZ201910005007)
北京市教育委员会科技计划一般项目(No.KM202110005027)
北京市自然科学基金-丰台轨道交通前沿研究联合基金(No.L211017)。
关键词
单幅图像去雾
深度学习
无监督学习
域泛化
single-image dehazing
deep learning
unsupervised learning
domain generalization
