arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2104.07877cs.CV
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一种用于实时的前景分割的De-raining语义分割网络

A De-raining semantic segmentation network for real-time foreground segmentation

Zhejiang University(浙江大学);Henan University of Science and Technology(河南科技大学)

Fanyi Wang, Yihui Zhang

摘要:

很少有研究已经提出了专门的实时的【形】语义分割在雨天环境。然而,这一领域的需求是巨大的,它是具有挑战性的轻量级网络。因此,本文提出了一种专门针对雨天环境下前景分割的轻量级网络--去雨语义分割网络(DRSNet)。通过对雨滴特性的分析,有针对性地设计了多尺度SE块对输入图像进行编码,采用多尺度扩张卷积增加接收野,并采用SE注意力机制学习各通道的权值。为了在不同的编码器和解码器层之间结合语义信息,提出了使用非对称跳跃(Asymmetric Skip),即编码器的高层语义层采用双线性插值,输出经过逐点卷积,然后逐元素添加到解码器的低层语义层。对比实验表明,MultiScaleSE Block和Asymmetric Skip算法在前景精度指标上分别比SEResNet 18和Symmetric Skip算法有一定程度的提高。DRSNet的参数仅为0.54M,浮点运算仅为0.20GFLOPs。在192*128、384*256和768*512的输入大小下,在电子科技大学全天场景加雨(UAS-add-rain)和百度人物细分加雨(BPS-add-rain)基准测试中均取得了最先进的结果和实时的【形】性能。DRSNet的速度超过了1GFLOPs以内的所有网络,前景精度指标也是同类网络中最好的。

英文摘要:

Few researches have been proposed specifically for real-time semantic segmentation in rainy environments. However, the demand in this area is huge and it is challenging for lightweight networks. Therefore, this paper proposes a lightweight network which is specially designed for the foreground segmentation in rainy environments, named De-raining Semantic Segmentation Network (DRSNet). By analyzing the characteristics of raindrops, the MultiScaleSE Block is targetedly designed to encode the input image, it uses multi-scale dilated convolutions to increase the receptive field, and SE attention mechanism to learn the weights of each channels. In order to combine semantic information between different encoder and decoder layers, it is proposed to use Asymmetric Skip, that is, the higher semantic layer of encoder employs bilinear interpolation and the output passes through pointwise convolution, then added element-wise to the lower semantic layer of decoder. According to the control experiments, the performances of MultiScaleSE Block and Asymmetric Skip compared with SEResNet18 and Symmetric Skip respectively are improved to a certain degree on the Foreground Accuracy index. The parameters and the floating point of operations (FLOPs) of DRSNet is only 0.54M and 0.20GFLOPs separately. The state-of-the-art results and real-time performances are achieved on both the UESTC all-day Scenery add rain (UAS-add-rain) and the Baidu People Segmentation add rain (BPS-add-rain) benchmarks with the input sizes of 192*128, 384*256 and 768*512. The speed of DRSNet exceeds all the networks within 1GFLOPs, and Foreground Accuracy index is also the best among the similar magnitude networks on both benchmarks.

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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