reconstruction issues

[giancan]

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

[Johannes Schönberger]

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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