“…Several manual thresholding techniques, such as trial and error (Prakash et al, 1997;Saraf et al, 1995), thermal mean value derivation adding a standard deviation of two (Huo et al, 2014;Prakash and Gupta, 1999), and the slope of the histogram (Rosema et al, 1999), as well as an automated thermal anomaly extraction technique (Kuenzer, 2005;Kuenzer et al, 2007a;Zhang, 2004) have been employed to delineate coal fire induced thermal anomalous areas. Zhang (2004) and Kuenzer et al (2007a) proposed this automated thermal anomaly extraction approach, which is based on a moving window concept and statistic analysis within a sub-image based on raw thermal satellite data.…”