[gdal-dev] Mosaic question...

Jonathan Greenberg jgreenberg at unr.edu
Mon Feb 6 14:33:19 PST 2017


I love the gdalbuildvrt -> gdal_translate trick for large mosaicks, but I
have a somewhat more complicated problem I was hoping I could get some help
on.  Given a large set of overlapping images, I want to mosaic using the
following "rules": 1) all overlapping pixels should be averaged together,
and 2) any "nodata" pixels in a given input image should be ignored in that

Is this doable in GDAL?  Or am I stuck with just the "top" image in the vrt
being the value the output mosaic uses?

Jonathan A. Greenberg, PhD
Randall Endowed Professor and Associate Professor of Remote Sensing
Global Environmental Analysis and Remote Sensing (GEARS) Laboratory
Natural Resources & Environmental Science
University of Nevada, Reno
1664 N Virginia St MS/0186
Reno, NV 89557
Phone: 415-763-5476
AIM: jgrn307, MSN: jgrn307 at hotmail.com, Gchat: jgrn307, Skype: jgrn3007
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