Hello to everyone! Does anyone knows where I can find detailed informations on SPEAR Tools Change Detection i.e. fourth method Spectral Angle change detection, with exception EXELIS Website (http://www.exelisvis.com/...angeDetection.html)? I am just wondering if it is possible to get info on Spectral Angle Change Detection method, offered in SPEAR Tools, in particular about how spectral similarities between "before" and "after" images are measured? How is change-no change threshold set? What about probability of measurement? I tried to find out looking over web browsers and articles but still with not successful results. Kind regards