reconstruction issues

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giancan

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Oct 5, 2018, 4:54:30 AM10/5/18
to COLMAP
Dear COLMAP support,
I've run a high resolution reconstruction from video frames and I got into a couple of problems.
In the attached file you can see a side view of the reconstruction. The red line of cameras should be sort of straight line but instead, on the left part of the reconstruction, cameras form a curving line. On the right side, the reconstruction seems ok.
First thing I would like to do is to split the reconstruction into two models from a specific camera file onwards; then I would like to find a way to correct this "curving" distortion if possible.
Can you help me with the above?
Thanks,

giancan
Colmap_reconstruction-issue.png

Johannes Schönberger

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Oct 6, 2018, 11:10:26 AM10/6/18
to col...@googlegroups.com

Hi,

 

Automatic calibration of intrinsics in the case of planar surfaces is degenerate. I suggest to perform an offline calibration of the parameters and then fix them during the reconstruction.

 

Cheers,

Johannes

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