Optical Remote Sensing Image Classification Method Based on Scene Context Perception

Abstract

Optical remote sensing image classification is one of the key technologies in the field of Earth observation. In recent years, researchers have proposed optical remote sensing image classification using deep neural networks. Aiming at the problem of inadequate feature extraction in some network models, this paper proposes a remote sensing image classification method based on scene context perception and attention enhancement, called ScEfficientNet. This method designs a scene context-driven module (SCDM) to model the spatial relationship between the target and its surrounding neighborhood, enhancing the original feature representation with scene context features. It introduces a convolutional block attention module (CBAM) to weight the feature maps based on the importance of channels and spatial locations, and combines it with a depth-wise separable convolution structure to extract discriminative information of the targets, referred to as ScMBConv. Based on the above works, the ScEfficientNet model, which incorporates scene context perception and attention enhancement, is used for remote sensing image classification. Experimental results show that ScEfficientNet achieves an accuracy of 96.8% in AID dataset, which is a 3.3% improvement over the original network, with a parameter count of 5.55 M. The overall performance is superior to other image classification algorithms such as VGGNet19, GoogLeNet and ViT-B, confirming the effectiveness of the ScEfficientNet model.

Keywords

• |image classification|optical remote sensing image|convolutional neural network|efficientnet