Model is curved in CR. Not in other software

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kontson91

• July 12, 2020 12:08

Hi,

We used a Mavic pro 2 to take 313 photos and resulting model looks very curved(Distortion?).
I've used the same images with another software and it comes out straight. I've tried playing around with alignment options, added GCP's, but its still curved.

See screenshots for what I mean.

Has anyone had any experience with this issue?
Thank you for any help in advance

Tom

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  Erik Kubiňan CR

  • July 13, 2020 11:20

  Hello dear user,
  this issue happens because all of your cameras follow the same height, If you would have another set at different height and also let the images be at a different angle than 90 degrees straight, this effect would go off. To fix it now, you can try to place multiple control points across the whole point cloud (let's say 10 of them) and realign. 

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  kontson91

  • July 13, 2020 13:24

  Thank you for your response Erik.
  I will try this

   

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  nino

  • July 13, 2020 18:57

  Isn't this problem of mavic 2 pro electronic shutter? What was your flight speed? Try to lower fly speed. Also try different distortion model (brown 4 with tangential 2)

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  Zuzana Ďuríčková CR

  • July 14, 2020 08:16

  Hello,

  before alignment please try to group the cameras w.r.t to exif and also set Brown 4 t2 distortion model in the alignment settings. This should eliminate the "banana" effect.
  

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