User Manual - pancroma

You can subset five band data sets in any supported file format for 2X file sets(where panchromatic band rows and columns are 2 times (or 2X-1) thecorresponding band row and column sizes). You can also subset five filesubsets created by the Digital Globe file extraction utility in GeoTiff format (sincethis is the only output format supported by the utility.) This capability is usefulwhen using an additional near infrared (NIR) band for ENHG enhanced greenchannel or XIONG processing. The techniques for gap filling, ENHG and XIONGprocessing are described in detail in later sections.IMPORTANT NOTE: When subsetting non-Landsat scenes for pan sharpening,the procedure is a little different. First subset the three or four band files asdescribed above. Afterwards, subset the panchromatic band using the ‘Select byCoordinates’ option, using the coordinates that are automatically saved duringthe band file subsetting operation.Another useful option is the ‘Subset Six Bands’ menu selection. This utilityautomatically resizes six input bands to maximum common extents. The utilitywill rationalize unequal row and column counts and also unequal image xScaleand yScale values. As long as there is an overlap between the two sets of bandfiles, PANCROMA TM will co-register the images.To use it, select ‘File’ | ‘Open’ and open six input band files, three from the firstLandsat of SPOT scene followed by three from the second Landsat or SPOTscene. Then select ‘Subset Utilities’ | ‘Subset Images’ | ‘Subset Six Bands’.42