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

• URL: http://arxiv.org/abs/2104.07877v1
• Date: Fri, 16 Apr 2021 04:09:13 GMT
• Title: A De-raining semantic segmentation network for real-time foreground segmentation
• Authors: Fanyi Wang, Yihui Zhang
• Abstract summary: This paper proposes a lightweight network for the segmentation in rainy environments, named Deraining Semantic Accuracy Network (DRSNet) By analyzing the characteristics of raindrops, the MultiScaleSE Block is targetedly designed to encode the input image. In order to combine semantic information between different encoder and decoder layers, it is proposed to use Asymmetric Skip.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: 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.

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