Distorted mesh

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Tadej Anclin

• December 10, 2019 14:12

I was taking photos of a long straight alley wall and came up to this distortion. 
28mm full frame sony camera.



I've tried different distortion methodts, borwn 3, 4, tangent... got a little better but nothing usable. With and without undistorting images (i know it's not the way but just for test anyways)

So I'm thinking that my approach of taking photos wasn't optional. 

Do you have any suggestions?

Would it work better with GPS image data?

Based on image bellow, would it make any difference / better results?

1. 0° frontal (current shots)
2. 45° side view
3. 80° side view
4. 0° frontal very wide view

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  Jonathan_Tanant

  • December 10, 2019 14:41

  I think that mix several angles will help. You are maybe too even in your shooting positions and angles.

  You can also try to group your pictures in one group (constant calibration), sometimes it helps.

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  Tadej Anclin

  • December 10, 2019 14:42

  Is it possible that this nudge corrupt the distortion map?

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  Tadej Anclin

  • December 10, 2019 15:12

  Found myself an answer in other post  saying: 
  
  

  We've done some more testing and think we might have figured out the issue here and it relates to the way you capture.

  It would seem that you can't do a single line of images, no matter the about of overlap. You must capture with images shot to the side of the strip you require preferably non perpendicular, I think. We ran a number of tests on a known flat surface where one end was shot in a strip joining to the other end shot in a dome like pattern. The model is bent and curves into a perfectly flat region.

  I hope this makes sense and helps anyone also seeing the same errors.

  Thanks

  
  Sam

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