arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2108.09894cs.CV
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CANet:一种上下文感知的阴影消除网络

CANet: A Context-Aware Network for Shadow Removal

Wuhan University(武汉大学);JD Finance America Corporation(京东金融美国公司);Wuhan University of Science and Technology(武汉科技大学)

Zipei Chen, Chengjiang Long, Ling Zhang, Chunxia Xiao

摘要:

在本文中,我们提出了一种新的两阶段的上下文感知网络命名为CANet的阴影去除,其中的上下文信息从非阴影区域被转移到阴影区域的嵌入式特征空间。在第一阶段,我们提出了一个上下文补丁匹配(CPM)模块生成一组潜在的匹配对阴影和非阴影补丁。结合阴影和非阴影区域之间潜在的上下文关系,我们精心设计的上下文特征转移(CFT)机制可以将上下文信息从非阴影区域转移到不同尺度的阴影区域。利用重建的特征图,我们分别在L和A/B通道去除阴影。在第二阶段,我们使用编码器-解码器来细化当前结果并生成最终的阴影去除结果。我们在两个基准数据集和一些具有复杂场景的真实阴影图像上评估了我们提出的CANet。大量的实验结果有力地证明了我们提出的CANet的有效性,并表现出优越的性能,以国家的最先进的。

英文摘要:

In this paper, we propose a novel two-stage context-aware network named CANet for shadow removal, in which the contextual information from non-shadow regions is transferred to shadow regions at the embedded feature spaces. At Stage-I, we propose a contextual patch matching (CPM) module to generate a set of potential matching pairs of shadow and non-shadow patches. Combined with the potential contextual relationships between shadow and non-shadow regions, our well-designed contextual feature transfer (CFT) mechanism can transfer contextual information from non-shadow to shadow regions at different scales. With the reconstructed feature maps, we remove shadows at L and A/B channels separately. At Stage-II, we use an encoder-decoder to refine current results and generate the final shadow removal results. We evaluate our proposed CANet on two benchmark datasets and some real-world shadow images with complex scenes. Extensive experimental results strongly demonstrate the efficacy of our proposed CANet and exhibit superior performance to state-of-the-arts.

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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