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Pix4D QGIS u0026 GDAL Library for Manually Georeferencing Aerial Mosaics u0026 Google Map Tiling

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Dennis Baldwin

All photos from this tutorial were taken with my Canon SX260:

http://amzn.to/1zRy7v1

mounted in my FX79 flying wing:

http://www.valuehobby.com/fx79buffa...

I wanted to share this because it's the process I've been using to convert my nongeoreferenced aerial mosaics into something I can load into Google Maps. There are some times where I haven't been able to get GPS information from my photos and this process has come in handy.

It makes use of the following free tools:

http://www.qgis.org/

https://plugins.qgis.org/plugins/open...

http://docs.qgis.org/1.8/en/docs/user...

http://www.gdal.org/

As I mentioned in the video this is something you can do with images not only from Pix4D, but from other sources.

Here are the commands I used to convert the image from GeoTiff to png using the gdal tools:

gdalwarp srcnodata 0 transparent_caliterra_102614_pix4d_mosaic_group1_georeferenced.tif transparent_caliterra_102614_pix4d_mosaic_group1_georeferenced.png

and here's what I used to create the map tiles from the png file:

gdal2tiles.py z 1520 s_srs EPSG:3857 k transparent_caliterra_102614_pix4d_mosaic_group1_georeferenced.png

If you have any questions or comments please share them below.

Thanks for watching!

posted by cronicobarnc