4.7 Article

Unsupervised Generative Adversarial Network with Background Enhancement and Irredundant Pooling for Hyperspectral Anomaly Detection

期刊

REMOTE SENSING
卷 14, 期 5, 页码 -

出版社

MDPI
DOI: 10.3390/rs14051265

关键词

generative adversarial networks (GAN); hyperspectral anomaly detection (HAD); background spatial feature enhancement (BE); irredundant pooling (IP)

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In this paper, an unsupervised generative adversarial network method is proposed to address the issues of background generation capability and redundant information disturbance in hyperspectral anomaly detection. By enhancing background spatial features and employing irredundant pooling, the proposed method achieves better performance compared to other algorithms.
Lately, generative adversarial networks (GAN)-based methods have drawn extensive attention and achieved a promising performance in the field of hyperspectral anomaly detection (HAD) owing to GAN's powerful data generation capability. However, without considering the background spatial features, most of these methods can not obtain a GAN with a strong background generation ability. Besides, they fail to address the hyperspectral image (HSI) redundant information disturbance problem in the anomaly detection part. To solve these issues, the unsupervised generative adversarial network with background spatial feature enhancement and irredundant pooling (BEGAIP) is proposed for HAD. To make better use of features, spatial and spectral features union extraction idea is also applied to the proposed model. To be specific, in spatial branch, a new background spatial feature enhancement way is proposed to get a data set containing relatively pure background information to train GAN and reconstruct a more vivid background image. In a spectral branch, irredundant pooling (IP) is invented to remove redundant information, which can also enhance the background spectral feature. Finally, the features obtained from the spectral and spatial branch are combined for HAD. The experimental results conducted on several HSI data sets display that the model proposed acquire a better performance than other relevant algorithms.

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