Harmonize adjusts the colors between two overlapping orthomosaics. This is important when two overlapping flights have been conducted under different weather conditions or day times. The overlapping area between two images is automatically determined. The colors of both - the reference and the source - orthomosaic are analyzed in the overlapping area. Different linear and nonlinear models can be used to adjust the colors of the source orthomosaic. In some cases the nonlinear models can result in color artifacts but often return the best results.
The joint area is displayed for both images. This helps to determine if the image overlap was large enough and detected correctly.
The screenshot shows the results of an harmonizing process.
The following images show the same set of overlapping orthomosaics. The first image shows the flight paths, the second the original orthomosaics, and the third image the harmonized orthomosaics. Harmonization is based on the central orthomosaic (orange flight path) and propagated successively to all other neighbouring orthomosaics.
