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arXiv 2408.03885cs.CVeess.IV

无参考图像质量评估:全局-局部渐进融合与语义对齐质量迁移

No-Reference Image Quality Assessment with Global-Local Progressive Integration and Semantic-Aligned Quality Transfer

School of Electronics and Communication Engineering, Sun Yat-sen University(中山大学电子与通信工程学院)

Xiaoqi Wang, Yun Zhang

AI总结:

提出全局-局部渐进融合与语义对齐质量迁移的无参考图像质量评估模型,通过双测量框架和渐进特征融合提升跨数据集泛化性能,SROCC最高提升13.23%。

摘要:

在没有参考信号的情况下准确测量图像质量,仍然是低级视觉感知应用中的一个基本挑战。在本文中,我们提出了一种全局-局部渐进融合模型,通过三个关键贡献来应对这一挑战:1)我们开发了一个双测量框架,结合了基于视觉Transformer(ViT)的全局特征提取器和基于卷积神经网络(CNN)的局部特征提取器,以在不同粒度上全面捕获和量化图像失真特征。2)我们提出了一种渐进特征融合方案,利用多尺度核配置来对齐全局和局部特征,并通过通道自注意力和空间交互模块的交互堆叠逐步聚合它们,以获得多粒度的质量感知表示。3)我们引入了一种语义对齐的质量迁移方法,通过自动用主观意见分数标注多样图像内容的质量分数来扩展训练数据。实验结果表明,我们的模型在跨真实和跨合成数据集泛化测试中,Spearman秩相关系数(SROCC)分别提高了5.04%和5.40%。此外,所提出的语义对齐质量迁移在单一合成和跨合成数据集的评估中进一步带来了2.26%和13.23%的性能提升。

英文摘要:

Accurate measurement of image quality without reference signals remains a fundamental challenge in low-level visual perception applications. In this paper, we propose a global-local progressive integration model that addresses this challenge through three key contributions: 1) We develop a dual-measurement framework that combines vision Transformer (ViT)-based global feature extractor and convolutional neural networks (CNNs)-based local feature extractor to comprehensively capture and quantify image distortion characteristics at different granularities. 2) We propose a progressive feature integration scheme that utilizes multi-scale kernel configurations to align global and local features, and progressively aggregates them via an interactive stack of channel-wise self-attention and spatial interaction modules for multi-grained quality-aware representations. 3) We introduce a semantic-aligned quality transfer method that extends the training data by automatically labeling the quality scores of diverse image content with subjective opinion scores. Experimental results demonstrate that our model yields 5.04% and 5.40% improvements in Spearman's rank-order correlation coefficient (SROCC) for cross-authentic and cross-synthetic dataset generalization tests, respectively. Furthermore, the proposed semantic-aligned quality transfer further yields 2.26% and 13.23% performance gains in evaluations on single-synthetic and cross-synthetic datasets.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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