提出多尺度频域增强网络,提升模糊图像去模糊效果。
Multi-scale Frequency Enhancement Network for Blind Image Deblurring
- 用深度可分离卷积构建多尺度特征提取模块,捕捉空间与通道信息。
- 结合小波变换与多条带池化,有效恢复高频纹理并感知非均匀模糊。
- 在GoPro和HIDE数据集上表现优异,提升下游目标检测准确率。
图像去模糊是关键的图像预处理技术,旨在从模糊图像中恢复清晰细节。然而,现有方法常难以有效融合多尺度特征提取与频域增强,限制了细纹理重建能力;同时,图像中非均匀模糊也制约了修复效果。为此,本文提出用于盲去模糊的多尺度频域增强网络(MFENet)。为捕捉模糊图像的多尺度空间与通道信息,引入基于深度可分离卷积的多尺度特征提取模块(MS-FE),提供丰富目标特征。提出频率增强模糊感知模块(FEBP),利用小波变换提取高频细节,并通过多条带池化感知非均匀模糊,结合多尺度信息与频域增强以改善纹理恢复。在GoPro与HIDE数据集上的实验表明,该方法在视觉质量与客观评价指标上均表现更优。此外,在下游目标检测任务中,所提算法显著提升检测准确率,进一步验证其在图像去模糊领域的有效性与鲁棒性。
原文摘要 · Abstract (English)
Image deblurring is an essential image preprocessing technique, aiming to recover clear and detailed images form blurry ones. However, existing algorithms often fail to effectively integrate multi-scale feature extraction with frequency enhancement, limiting their ability to reconstruct fine textures. Additionally, non-uniform blur in images also restricts the effectiveness of image restoration. To address these issues, we propose a multi-scale frequency enhancement network (MFENet) for blind image deblurring. To capture the multi-scale spatial and channel information of blurred images, we introduce a multi-scale feature extraction module (MS-FE) based on depthwise separable convolutions, which provides rich target features for deblurring. We propose a frequency enhanced blur perception module (FEBP) that employs wavelet transforms to extract high-frequency details and utilizes multi-strip pooling to perceive non-uniform blur, combining multi-scale information with frequency enhancement to improve the restoration of image texture details. Experimental results on the GoPro and HIDE datasets demonstrate that the proposed method achieves superior deblurring performance in both visual quality and objective evaluation metrics. Furthermore, in downstream object detection tasks, the proposed blind image deblurring algorithm significantly improves detection accuracy, further validating its effectiveness androbustness in the field of image deblurring.
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