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Phantom 3 Pro + Pix4D + Ground Control Points (Gcp)

Discussion in 'General Discussion' started by michaelvanniekerk, Jan 15, 2016.

  1. michaelvanniekerk

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    Good day gents

    Have any of you used aerial imagery from the P3P and processed in Pix4D to generate a 3d Model/orto photo but WITH ground control points?

    Fly altitude was on 100m and another on 60m. The GCPs were accurately fixed with survey grade GPS.

    I have experienced some bad closures . 10-30 cm.

    I use "maps made easy" app to perform autonomous flying.

    Regards

    Michael
    Land Surveyor
     
  2. michaelvanniekerk

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    Oblique photography tighten and improve elevations.


    Sent from my iPhone using PhantomPilots mobile app
     
  3. black

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    we have been using pix4d in combination with a Phantom Vision+. flying was in 40 m over ground the area was 60x120 m. we used 5 gound control Points and 3 other Points for tests - using not Survey grade gps but normall surveying with a tolerance from max 2 mm. in result we got accuracies from 0.5 cm to 8 cm depending where we situated the ground control Points in our test area.

    black
     
  4. michaelvanniekerk

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    Thanks, i have seen that the addition of oblique photographs increases the accuracy very much, especially regarding heights, cheers