User Manual - pancroma

matching algorithm to be applied. The following image shows the result ofapplying this option.This produced the best result of all for this particular image, which is a syntheticnatural color image created from SPOT bands. Histogram matching can be avery powerful aid but it can also cause unwantedside effects. Settings that work well for one image may not work foranother. The defaults I set up work well for most Landsat pan sharpeningtasks. SPOT images may benefit from different settings.Histogram Match two ImagesPANCROMA TM also has the ability to perform a linear or nonlinear histogrammatch on two input bands. The histogram adjusted output image can then beexported for other purposes. In order to perform the match, input first thereference band and the adjust band, in this order. Check the ‘Activate ImageProcessing Routines’ check box. The image processing data entry box willappear as usual. Adjust the histogram parameters as usual. Now select ‘PreProcess’ | ‘Histogram Match’. PANCROMA TM will match the ‘adjust’ band to the‘reference’ band and display the ‘adjust’ band. You can save it as a JPEG orBMP file.Histogram matching is currently enabled for pan sharpening (HSI and Broveytransform methods) for image gap filling and for individual file adjustment. Seethe relevant manual sections for additional information.63