Paper ID | ARS-9.5 | ||
Paper Title | ADAPTING INTRA-CLASS VARIATIONS FOR SAR IMAGE CLASSIFICATION | ||
Authors | Tsenjung Tai, Masato Toda, NEC Corporation, Japan | ||
Session | ARS-9: Interpretation, Understanding, Retrieval | ||
Location | Area I | ||
Session Time: | Tuesday, 21 September, 13:30 - 15:00 | ||
Presentation Time: | Tuesday, 21 September, 13:30 - 15:00 | ||
Presentation | Poster | ||
Topic | Image and Video Analysis, Synthesis, and Retrieval: Image & Video Interpretation and Understanding | ||
IEEE Xplore Open Preview | Click here to view in IEEE Xplore | ||
Abstract | This paper presents a semi-supervised domain adaptation (SSDA) method for Synthetic Aperture Radar (SAR) image classification. SAR imagery is important in ground activity monitoring, but its wide application is impeded due to a lack of annotations. SSDA methods transfer class-discriminative knowledge from a fully-labeled source dataset to a scarcely-labeled target dataset. However, conventional methods often train models which overfit to labeled target data and fail on unlabeled data. To overcome this, we propose to additionally adapt intra-class variations. Specifically, a conversion network is trained to learn from source data the image feature variations caused by the change of image capturing angle. Then synthetic data, which represent a generalized target domain distribution, are estimated by applying the conversion to labeled target data. Our method improves the accuracy of the state-of-the-art SSDA approach from 64.28% to 80.40% in three-shot cases on the SAR ground vehicle dataset. |