Research Papers

Application of principal component analysis and information fusion technique to detect hotspots in NOAA/AVHRR images of Jharia coalfield, India

[+] Author Affiliations
Rohit S. Gautam, Dharmendra Singh, Anush Mittal

Indian Institute of Technology Roorkee

J. Appl. Remote Sens. 1(1), 013523 (July 23, 2007). doi:10.1117/1.2771256
History: Received January 5, 2007; Revised April 6, 2007; Accepted July 15, 2007; July 23, 2007; Online July 23, 2007
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Abstract

Present paper proposes an algorithm for hotspot (sub-surface fire) detection in NOAA/AVHRR images in Jharia region of India by employing Principal Component Analysis (PCA) and fusion technique. Proposed technique is very simple to implement and is more adaptive in comparison to thresholding, multi-thresholding and contextual algorithms. The algorithm takes into account the information of AVHRR channels 1, 2, 3, 4 and vegetation indices NDVI and MSAVI for the required purpose. Proposed technique consists of three steps: (1) detection and removal of cloud and water pixels from preprocessed AVHRR image and screening out the noise of channel 3, (2) application of PCA on multichannel information along with vegetation index information of NOAA/AVHRR image to obtain principal components, and (3) fusion of information obtained from principal component 1 and 2 to classify image pixels as hotspots. Image processing techniques are applied to fuse information in first two principal component images and no absolute threshold is incorporated to specify whether particular pixel belongs to hotspot class or not, hence, proposed method is adaptive in nature and works successfully for most of the AVHRR images with average 87.27% detection accuracy and 0.201% false alarm rate while comparing with ground truth points in Jharia region of India.

© 2007 Society of Photo-Optical Instrumentation Engineers

Citation

Rohit S. Gautam ; Dharmendra Singh and Anush Mittal
"Application of principal component analysis and information fusion technique to detect hotspots in NOAA/AVHRR images of Jharia coalfield, India", J. Appl. Remote Sens. 1(1), 013523 (July 23, 2007). ; http://dx.doi.org/10.1117/1.2771256


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