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Working on the edge…

Working on the edge…

  • 8th March 20182nd January 2019
  • by Frederick Mbuya

Problem…

UAV data has been collected over a large area +1,500 sq/km. The UAV’s used were small and as such the area was divided into 200+ zones each of which were then processed into individual Geotiffs. The data was collected without absolute accuracy and as so although the data within a given zone is relatively accurate there are varying degrees of edge matching issues when attempting to put all 200+ zones together.

Attempted solution…

A post processing process that would attempt to take individual zones and automatically do adaptive filtering of zones and then attempt to match using edge matching.

Test Data…

A 27 Zone section was selected as the same dataset.

Preliminary Result…

3km x 3km Zone.

pre post

at a glance it looks good, so lets look a little closer…

We selected two zones…

 
zone 117 zone 118

 

Zoomed to 1:1000 Scale

pre post

 

Zoomed to 1:5000 Scale

zone 117 zone 118

Zoomed to 1:1000 Scale

zone 117 zone 118

1km x 1km Zone

pre post

Zoomed to 1:5000 Scale

pre post

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