科研成果详情

近年来结合深度学习的图像语义分割方法日益发展,并在机器人、自动驾驶等领域中得到应用.本文提出一种基于区块自适应特征融合（Block adaptive feature fusion, BAFF）的实时语义分割算法,该算法在轻量卷积网络架构上,对前后文特征进行分区块自适应加权融合,有效提高了实时语义分割精度.首先,分析卷积网络层间分割特征的感受野对分割结果的影响,并在跳跃连接结构（SkipNet）上提出一种特征分区块加权融合机制;然后,采用三维卷积进行层间特征整合,建立基于深度可分离的特征权重计算网络.最终,在自适应加权作用下实现区块特征融合.实验结果表明,本文算法能够在图像分割的快速性和准确性之间做到很好的平衡,在复杂场景分割上具有较好的鲁棒性. 

Recently, image semantic segmentation has made great progress with deep learning, which benefits robotics and automatic driving vehicle. This paper proposes a real-time semantic segmentation algorithm based on block adaptive feature fusion (BAFF). Under the framework of a light convolutional network, a block adaptive feature fusion algorithm is proposed in the context-embedding module, to improve the accuracy of real-time semantic segmentation. First, the problem caused by the different size of receptive field in layers is analyzed, and a feature fusion mechanism with block weight is presented on SkipNet. Then, layers' feature integration is carried on by three-dimension convolution. The feature- weights are calculated by an additional network with depthwise-separable-convolutions (DSC). Finally, the features are fused under adaptive weights. Experiments show that this method obtains excellent segmentation results with a good balance between rapidity and accuracy and owns robustness on segmentation of complex scenes. Copyright © 2021 Acta Automatica Sinica. All rights reserved.