A hyperspectral anomaly detection framework based on segmentation and convolutional neural network algorithms

ABSTRACT

Hyperspectral imagery (HSI) creates a lot of applications in target or anomaly detection due to their rich spectral content. Generally, one scene of an HSI contains more than one class. Therefore, the Gaussian distribution assumption of the background fails. Furthermore, the high dimensionality of data makes background modelling more difficult by increasing redundancy and disturbances. In this paper, a segmented-distance based anomaly detection method is proposed for HSI. The proposed method is based on segmentation and takes advantage of the statistical properties of the segmented areas to suppress the false-alarms. In addition to that, nonlinear feature extraction based on convolutional stacked auto-encoder (SAE) neural networks are implemented to extract deep and nonlinear relations from the input data. Both 1-D and 2-D convolutional layers are investigated. The proposed method is tested on the three different datasets. The experimental results show that the integration of segmentation and deep feature extraction generally performs better than other state-of-the-art methods.

KEYWORDS:

• Deep learning
• Deep Feature extraction
• Stacked auto-encoder (SAE)
• Anomaly detector

Disclosure statement

No potential conflict of interest was reported by the authors.

Notes

1. http://www.ehu.eus/ccwintco/index.php/Hyperspectral_Remote_Sensing_Scenes.

2. https://colab.research.google.com/.