Journal
ISPRS INTERNATIONAL JOURNAL OF GEO-INFORMATION
Volume 8, Issue 6, Pages -Publisher
MDPI
DOI: 10.3390/ijgi8060276
Keywords
data augmentation; optical remote sensing image; ship detection; simulated samples; deep learning
Funding
- National Natural Science Foundation of China [61801142, 61601135, 61675051]
- Natural Science Foundation of Heilongjiang Province of China [QC201706802]
- China Postdoctoral Science Foundation [2018M631912]
- Postdoctoral Science Foundation of Heilongjiang Province of Chain [LBH-Z18060]
- Fundamental Research Funds for the Central Universities [3072019CFM0801]
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In this paper, we propose a data augmentation method for ship detection. Inshore ship detection using optical remote sensing imaging is a challenging task owing to an insufficient number of training samples. Although the multilayered neural network method has achieved excellent results in recent research, a large number of training samples is indispensable to guarantee the accuracy and robustness of ship detection. The majority of researchers adopt such strategies as clipping, scaling, color transformation, and flipping to enhance the samples. Nevertheless, these methods do not essentially increase the quality of the dataset. A novel data augmentation strategy was thus proposed in this study by using simulated remote sensing ship images to augment the positive training samples. The simulated images are generated by true background images and three-dimensional models on the same scale as real ships. A faster region-based convolutional neural network (Faster R-CNN) based on Res101netwok was trained by the dataset, which is composed of both simulated and true images. A series of experiments is designed under small sample conditions; the experimental results show that better detection is obtained with our data augmentation strategy.
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