Enabling Efficient Deep Convolutional Neural Network-based Sensor Fusion for Autonomous Driving

• URL: http://arxiv.org/abs/2202.11231v1
• Date: Tue, 22 Feb 2022 23:35:30 GMT
• Title: Enabling Efficient Deep Convolutional Neural Network-based Sensor Fusion for Autonomous Driving
• Authors: Xiaoming Zeng, Zhendong Wang, Yang Hu
• Abstract summary: Fusion between DCNNs has been proved as a promising strategy to achieve satisfactory perception accuracy. We propose a feature disparity metric to measure the degree of feature disparity between the feature maps being fused. We also propose a Layer-sharing technique in the deep layer that can achieve better accuracy with less computational overhead.
• Score: 10.326217500172689
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Autonomous driving demands accurate perception and safe decision-making. To achieve this, automated vehicles are now equipped with multiple sensors (e.g., camera, Lidar, etc.), enabling them to exploit complementary environmental context by fusing data from different sensing modalities. With the success of Deep Convolutional Neural Network(DCNN), the fusion between DCNNs has been proved as a promising strategy to achieve satisfactory perception accuracy. However, mainstream existing DCNN fusion schemes conduct fusion by directly element-wisely adding feature maps extracted from different modalities together at various stages, failing to consider whether the features being fused are matched or not. Therefore, we first propose a feature disparity metric to quantitatively measure the degree of feature disparity between the feature maps being fused. We then propose Fusion-filter as a feature-matching techniques to tackle the feature-mismatching issue. We also propose a Layer-sharing technique in the deep layer that can achieve better accuracy with less computational overhead. Together with the help of the feature disparity to be an additional loss, our proposed technologies enable DCNN to learn corresponding feature maps with similar characteristics and complementary visual context from different modalities to achieve better accuracy. Experimental results demonstrate that our proposed fusion technique can achieve better accuracy on KITTI dataset with less computational resources demand.

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