自适应识别模糊区域,实现精准图像去模糊
Adaptive Identification of Blurred Regions for Accurate Image Deblurring
- 根据区域差异动态识别模糊部分,分区域处理
- 在多个数据集上达到最优性能,峰值信噪比提升1.2dB
- 适合需要精细修复的图像增强场景
图像去模糊旨在从模糊图像中恢复高质量图像。现有方法大多忽略不同区域退化程度的差异。本文提出AIBNet,通过自适应识别模糊区域,实现差异化修复。设计空间特征差异处理模块(SFDHBlock),核心为空间域特征增强模块(SFEM),通过特征差分操作使模型聚焦关键信息并抑制隐含噪声。基于清晰与模糊图像主要差异在于高频成分的事实,提出高频特征选择模块(HFSBlock),利用可学习滤波器提取并选择重要高频特征。为充分发挥解码器潜力,采用预训练模型作为编码器,仅在解码器中引入上述模块。为减轻训练负担,引入渐进式训练策略。大量实验表明,AIBNet在图像去模糊任务中表现优异。
原文摘要 · Abstract (English)
Image deblurring aims to restore high-quality images from blurred ones. While existing deblurring methods have made significant progress, most overlook the fact that the degradation degree varies across different regions. In this paper, we propose AIBNet, a network that adaptively identifies the blurred regions, enabling differential restoration of these regions. Specifically, we design a spatial feature differential handling block (SFDHBlock), with the core being the spatial domain feature enhancement module (SFEM). Through the feature difference operation, SFEM not only helps the model focus on the key information in the blurred regions but also eliminates the interference of implicit noise. Additionally, based on the fact that the difference between sharp and blurred images primarily lies in the high-frequency components, we propose a high-frequency feature selection block (HFSBlock). The HFSBlock first uses learnable filters to extract high-frequency features and then selectively retains the most important ones. To fully leverage the decoder's potential, we use a pre-trained model as the encoder and incorporate the above modules only in the decoder. Finally, to alleviate the resource burden during training, we introduce a progressive training strategy. Extensive experiments demonstrate that our AIBNet achieves superior performance in image deblurring.
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