Abstract
This paper presents a nonlinear mixing model for joint hyperspectral image unmixing and nonlinearity detection. The proposed model assumes that the pixel reflectances are linear mixtures of endmembers, corrupted by an additional nonlinear term and an additive Gaussian noise. A Markov random field is considered for nonlinearity detection based on the spatial structure of the nonlinear terms. The observed image is segmented into regions where nonlinear terms, if present, share similar statistical properties. A Bayesian algorithm is proposed to estimate the parameters involved in the model yielding a joint nonlinear unmixing and nonlinearity detection algorithm. Simulations conducted with synthetic and real data show the accuracy of the proposed unmixing and nonlinearity detection strategy for the analysis of hyperspectral images.
| Original language | English |
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| Title of host publication | ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings |
| Publisher | IEEE |
| Pages | 3166-3170 |
| Number of pages | 5 |
| ISBN (Print) | 9781479928927 |
| DOIs | |
| Publication status | Published - 1 Jan 2014 |
| Event | 39th IEEE International Conference on Acoustics, Speech and Signal Processing 2014 - Florence, Italy, Florence, Italy Duration: 4 May 2014 → 9 May 2014 http://www.icassp2014.org/home.html |
Conference
| Conference | 39th IEEE International Conference on Acoustics, Speech and Signal Processing 2014 |
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| Abbreviated title | ICASSP 2014 |
| Country/Territory | Italy |
| City | Florence |
| Period | 4/05/14 → 9/05/14 |
| Other | ICASSP is the world's largest and most comprehensive technical conference focused on signal processing and its applications. The series is sponsored by the IEEE Signal Processing Society and has been held annually since 1976. The conference features world-class speakers, tutorials, exhibits, a Show and Tell event, and over 120 lecture and poster sessions.
ICASSP is a cooperative effort of the IEEE Signal Processing Society Technical Committees: Audio and Acoustic Signal Processing Bio Imaging and Signal Processing Design and Implementation of Signal Processing Systems Image, Video, and Multidimenional Signal Processing Information Forensics and Security Industry DSP Technology Standing Committee Machine Learning for Signal Processing Multimedia Signal Processing Sensor Array and Multichannel Signal Processing for Communications and Networking Signal Processing Education Standing Committee Signal Processing Theory and Methods Speech and Langauge Processing |
| Internet address |
Keywords
- Hyperspectral imagery
- nonlinear spectral unmixing
- nonlinearity detection
- residual component analysis
ASJC Scopus subject areas
- Signal Processing
- Software
- Electrical and Electronic Engineering