User Manual - pancroma

The next step will be to create an RGB color image reference image using thethree band files only. This is a PANCROMA feature that allows you to readilycompare the pan sharpened image to the image constructed from the three bandfiles. This latter image represents the ‘true’ tonal image quality. Our objective isto match the RGB reference image as closely as possible with the pansharpened image.To create the reference, select ‘File’|’Close Graphics Windows and Reset’. Nowopen your three subset band files, in my case the files ‘1106Subsetband1.jpg’;‘1106Subsetband2.jpg’; and ‘1106Subsetband3.jpg’. Check the ‘Maintain RGBComparison Image’ check box on the Main Window. This will allow the RGBimage prepared from the three band files (the ‘true color’ image) to persist on thescreen during the subsequent iterations of the panchromatic image creation.Now select ‘Band Combination’|’Generate' RGB True Color Composite fromETM+’ and the reference RGB image will quickly appear. Your screen shouldlook like the image below.307