yppmark,
You may want to try one of the following:
1) removing the statistics (if these were generated for your mosaic).
or
2) using the Colour Balance Mosaic Tool to create a second/alternate colour balanced mosaic (using the statistics you have generated).
I recommend testing the visual impacts on a sample mosaic first.
I use both solutions in my work, however, in this case you may want to try Solution 1 - remove statistics. You can recalculate statistics if you need them. However, depending on the size of your mosaic, this process may take a long time to complete.
Solution 2 uses statistics to achieve better colour balance across the mosaic area (e.g., you have imagery from two different Municipalities flown the same year, but a month apart). You can play around with the options to move both datasets to an acceptable middle ground.
I've found that clients generally prefer to view a mosaic without statistics generated as this appears to be more representative of the original base data. Depending on your workflow, you may not need statistics; statistics are however required if you wish to manipulate the imagery pixel values.
Removing statistics
Right-click the raster dataset or mosaic dataset in ArcCatalog and click Properties.
Scroll to the Statistics section on the General tab.
Click the Options button and click Clean Statistics.
The statistics are removed and the status is reported in this section of the dialog box.
Disable Statistics when Creating Mosaics
When building mosaics you may wish to turn off the statistics generation process. Statistics are generated by the default settings set in the mosaic tool.
You can disable this in Environment Settings
Raster Storage
Raster Statistics (clear the check box for Calculate statistics).
Color Balance Mosaic Tool
See Data Management Tools -> Raster -> Mosaic dataset ->Colour Balanace Mosaic Dataset
Cheers,
Jarold
