Papers › Reducing the feature divergence of RGB and near-infrared images using Switchable Normalization
Reducing the feature divergence of RGB and near-infrared images using Switchable Normalization
Siwei Yang, Shaozuo Yu, Bingchen Zhao, Yin Wang
Visual pattern recognition over agricultural areas is an important application of aerial image processing. In this paper, we consider the multi-modality nature of agricultural aerial images and show that naively combining different modalities together without taking the feature divergence into account can lead to sub-optimal results. Thus, we apply a Switchable Normalization block to our DeepLabV3 segmentation model to alleviate the feature divergence. Using the popular symmetric Kullback Leibler divergence measure, we show that our model can greatly reduce the divergence between RGB and near-infrared channels. Together with a hybrid loss function, our model achieves nearly 10\% improvements in mean IoU over previously published baseline.
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