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InconSeg: Residual-Guided Fusion With Inconsistent Multi-Modal Data for Negative and Positive Road Obstacles Segmentation

2 May 2023journal 2023 5archive 2025-07-28

Zhen Feng ID, Yanning Guo ID, David Navarro-Alarcon ID, Yueyong Lyu ID, and Yuxiang Sun

Segmentation of road obstacles, including negative and positive obstacles, is critical to the safe navigation of autonomous vehicles. Recent methods have witnessed an increasing interest in using multi-modal data fusion (e.g., RGB and depth/disparity images). Although improved segmentation accuracy has been achieved by these methods, we still find that their performance could be easily degraded if the two modalities have inconsistent information, for example, distant obstacles that can be viewed in RGB images but cannot be viewed in depth/disparity images. To address this issue, we propose a novel two-encoder-two-decoder RGB-depth/disparity multi-modal network with Residual-Guided Fusion modules. Different from most existing networks that fuse feature maps in encoders, we fuse feature maps in decoder. We also release a large-scale RGB-depth/disparity dataset recorded in both urban and rural environments with manually-labeled ground truth for both negative- and positive-obstacles segmentation. Extensive experimental results demonstrate that our network achieves state-of-the-art performance compared with other networks.

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