基于深度估计网络SS-Net的SLAM系统

现有的SLAM方案中，单目SLAM系统无法满足高精度定位。因此提出了一种基于深度估计网络的SLAM系统。此系统在ORB-SLAM的系统上，融合了Sobel边界引导和场景聚合网络（sobel-boundary-induced and scene-aggregated network，SS-Net）的系统，仅依靠单目实现精准定位。SS-Net考虑了不同区域的深度关系和边界在深度预测中的重要特征。基于边界引导和场景聚合网络（boundary-induced and scene-aggregated network，BS-Net），SS-Net提出了边界提取模块（edge detection，ED），改进了图像细化模块（stripe refinement，SR）。SS-Net网络能够考虑不同区域之间的深度相关性，提取重要的边缘，并融合不同层次下面的网络特征，可以处理单帧图像，从而获得整个序列的深度估计。在NYUD v2和TUM数据集上的大量实验表明，SS-Net深度预测有较高的准确性，并且证明了基于SS-Net的SLAM系统比原系统更优秀。

SLAM System Based on Depth Estimation Network SS-Net

The monocular SLAM system cannot satisfy high-precision positioning in the existing SLAM method. Therefore, a SLAM system based on depth estimation network is proposed. This system integrates the sobel-boundary-induced and scene-aggregated network（SS-Net） system on the traditional ORB-SLAM system, and rely on monocular to achieve accuracy localization. The SS-Net uses for depth estimation considers the important role of the different depth relationship and boundary in depth prediction. Based on boundary-induced and scene-aggregated network（BS-Net）, SS-Net incorporates an edge detection（ED） block, and a stripe refinement（SR） block. The SS-Net network can consider the deep correlation between different regions, extract important edges, and integrate network features below different levels, it can process a single frame of image, and then obtain depth estimate of the entire sequence. Experiments on NYUD v2 and TUM datasets show that SS-Net depth prediction has higher accuracy, and proves that the performance of SLAM system based on SS-Net is better than the original system.