User Manual - pancroma

The following image is the RGB color composite from the multispectral band files.This is the standard by which color tones will be evaluated.The next step is to decompose the pan sharpened RGB image into itscomponent band files. This can be done by opening the RGB image andchecking the ‘Generate Grayscale Band Images’ check box at the bottom of theMain Window. (You can uncheck the ‘Generate RGB Color Composite Image’ ifyou want.) Then select ‘Display Files’ | ‘Display One Color Composite Image’.When the grayscale band files are created, save them by selecting ‘File’ | ‘SaveGrayscale Image’ | ‘GeoTiff’ and supplying a base file name, like ‘rawImage’.PANCROMA TM will automatically apply the correct band number suffix.The next step is to compute the regression coefficients. But before we can dothis, the raw images must be resized to match the row and column counts of thesource multispectral images. This is necessary because the multiple regressionutility wants all input files to match. You can resize the images by opening thethree raw pan sharpened images and then selecting ‘Pre Process’ | ‘ResizeImages’ | ‘Resize Three Images’. You will be prompted for the row and columncounts. Enter the row and column dimensions of the unprocessed Landsat bandfiles. In this example, the size of the pan sharpened bands was 854 by 792 andthe size of the multispectral bands was 427 by 396, i.e. the multispectral row andcolumn counts were half those of the pan sharpened image. After resizing, saveas GeoTiffs. My base file name was ‘resizedPanSharpenedGrayscale’. Again,PANCROMA TM will assign the appropriate band number suffixes.378