I have a rather big Geotiff. It is the mosaic of four RapidEye satellite images. They are all a bit bland/grayish. When combined I would like to freshen up their colors so that they are more visually appealing. The imagery will be used as a backdrop for other data.
I have tried right-clicking on the raster in the layers list and selecting Properties. Using Symbology allows for detailed adjustments. But there is no easy way to auto-adjust the image color balance.
Some image software like IrfanView has "auto adjust colors". IrfanView can not open my geotiff image, but this kind of functionality represents what I am looking for.
To the extent I am doing analysis on the imagery I will of course not mess with the color balance.