使用bi-directional propagation来获取全局上下文

(ECCV 2016) LSTM-CF: Unifying Context Modeling and Fusion with LSTMs for RGB-D Scene Labeling

• https://arxiv.org/abs/1604.05000

(TPAMI 2020) Direction-Aware Spatial Context Features for Shadow Detection and Removal

• https://ieeexplore.ieee.org/document/8723605

(TCSVT 2020) SAC-Net: Spatial Attenuation Context for Salient Object Detection

• https://ieeexplore.ieee.org/document/9094635

(TIP 2020) PiCANet: Pixel-wise Contextual Attention Learning for Accurate Saliency Detection

• https://ieeexplore.ieee.org/document/9076883
• https://arxiv.org/pdf/1812.06314.pdf