[gdal-dev] What GDAL BUILDVRT utility does in case of overlapped pixels while mosaicking georeferenced images?

[go2viena at gmx.com]

Hi GDAL Developers:
During mosaicking numerous georeferenced images using the BUILDVRT utility (http://www.gdal.org/gdalbuildvrt.html ), what this tool does in case of overlapped pixels: does it calculate mean values for all the overlapped pixels and that mean value is resulted in final mosaicked image? OR anything else?
I want to make sure about the actual method behind this utility.
Thanks.
nils
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