User Manual - pancroma

Now we will start the pan sharpening. Select ‘File’|’Close Graphics Windows andReset’. Now open your three subset band files, in my case the files‘1106Subsetband1.jpg’; ‘1106Subsetband2.jpg’; ‘1106Subsetband3.jpg’ plus thePAN file ; ‘1106Subsetband4.jpg’ (i.e. open four files in total). Note that thereference image is still visible. We will compare the panchromatic image to thisimage in order to see how true our panchromatic colors are and to makeadjustments if necessary.For our first try, we will accept the default PANCROMA TM settings except for onesmall adjustment. Check the ‘Activate Image Processing Routines’ check box.Select ‘Pan Sharpening’|’HSI Transform’. When the iterations data entry boxpops up, just click ‘OK’ to accept the default settings. When the imageprocessing data entry box appears, uncheck the ‘Clip Tail’ check box in thehistogram data group and then select the ‘Process Image’ button. After a bit ofcomputation, the panchromatic image will be computed, and your screen shouldlook something like the figure below:The panchromatic image is the one in the form named ‘RGB Form’ and thecomparison image is in the form named ‘RGB Comparison Form’. TheHistogram Form shows the results of the histogram match algorithm. This utilityadjusts the panchromatic band pixels to match more closely the radiance of the308