User Manual - pancroma

they do not occur within the Landsat image, you have made an error. Select the'Enter' button. The data entry box will disappear and the subset images will bedisplayed. Now save the three subset images in GeoTiff format by selecting'File'|'Save'|'Save Subset Images'|'GeoTiff'.The next step is to compare your subset Landsat and SPOT ® panchromaticimages. They should cover exactly the same area. The SPOT ® rows andcolumns should be exactly three times those of the Landsat Subset images.Often the rows or columns will be off by one. This must be corrected by resizingwhichever is larger down to the smaller dimension. If the panchromatic band islarger, resize it by selecting 'Pre Process' | 'Resize Images'. Select 'Resize OneImage' if the panchromatic band is larger or else 'Resize Three Images' if theLandsat bands are larger.Once you have checked your images and resized if necessary, the Landsat bandfiles can be pan sharpened using the SPOT ® panchromatic band as usual.If desired you can also use the five file XIONG algorithm PANCROMA TM willsubset a four file bundle of the three visible spectrum bands plus the NIR band.After subsetting, the pan sharpening proceeds as normal except of course thatthe SPOT panchromatic band is again used.355