Real-time online unsupervised detection and classification for remotely sensed imagery

Qian Du

doi:10.1117/12.541918

12 August 2004 Real-time online unsupervised detection and classification for remotely sensed imagery

Qian Du

Proceedings Volume 5425, Algorithms and Technologies for Multispectral, Hyperspectral, and Ultraspectral Imagery X; (2004) https://doi.org/10.1117/12.541918
Event: Defense and Security, 2004, Orlando, Florida, United States

Abstract

Realtime online processing is important to provide immediate data analysis for resolving critical situations in real applications of hyperspectral imaging. We have developed a Constrained Linear Discriminant Analysis (CLDA) algorithm, an excellent approach to hyperspectral image classification, and investigated its realtime online implementation. Because the required prior object spectral signatures may be unavailable in practice, we propose its unsupervised version in this paper. The new algorithm includes unsupervised signature estimation in realtime followed by realtime CLDA algorithm for classification. The unsupervised signature estimation is based on linear mixture model and least squares error criterion. The preliminary result using an HYDICE scene demonstrates its feasibility and effectiveness.

Citation Download Citation

Qian Du "Real-time online unsupervised detection and classification for remotely sensed imagery", Proc. SPIE 5425, Algorithms and Technologies for Multispectral, Hyperspectral, and Ultraspectral Imagery X, (12 August 2004); https://doi.org/10.1117/12.541918

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