??I want to apply OTSU Algorithm in ENVI, i found "Image Change Workflow" under "Change Detection" tool... the process runs smoothly till the result... in the form of raster and vector, which i supposed, not the output of OTSU... (it should define some class limit out of range of values)... Is there any other way to perform this algo.? Or any literature about this... What im missing here in this process... As I consult the ENVI tutorial on this tool for the performance.