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Remote Sensing, GIS, Ecology, and Oddball Techniques

Posts Tagged ‘Zanzibar Mapping Initiative’

ZMI — Zanzibar Mapping Initiative Level 1

Posted by smathermather on June 12, 2017

The Zanzibar Mapping Initiative is the largest civilian drone mapping project in the world — an ambitious project to map the Zanzibar Archipelago using a whole host of eBee drones.

Khadija Abdulla Ali demonstrating launch.

The project is nearing completion of mapping Unguja, the larger of the two main islands.

Yussuf Said Yussuf showing how the camera seats in an eBee drone.

Yves Barthelemy talking to the ZMI team.

overview

Unguja Island from Landsat 5, 2009

Because of the large area to be covered, ZMI required an approach to partition the data into manageable flight areas.

grid

Zone grid

And in practicality, these were flown as overlapping areas, with some areas flown at a higher resolution:

grid_actual.png

Overlapping flight areas

single_tile

Now here’s the problem: how do we put these back together with just GDAL and a Windows command prompt? I had the privilege of testing out my ideas on these data:

https://gist.github.com/smathermather/d948a252f5e417334244adc05c10790b

zmi_level1

Cookie cutter versions of the imagery.

mosaic.png

Mosaic

Posted in GDAL, Other | Tagged: , , , , | 1 Comment »