Undo Radial

[xz10]

Hi guys, I have managed to get the toolbox v1.0 up and running (a big thanks to the authors!) however I am having some questions:

1) I understand the routine will automatically estimate the nonlinear distortion parameters of the camera, but if I wish to use the parameters calculated by say Calibration toolkit developed by CalTech, how can I do that? 

    Is it correct that we have to first turn on config.cal.UNDO_RADIAL= 1 (duh!); then manually create a *.rad file (does't feel right) that contains the distortion coefficients for each camera?\

2) If I wish to reconstruct the 3D coordinates from a set of 2D coordinates by using the function uP2X.m in MultiCamSelfCal-master/BlueCCal\MultiCamValidation/CoreFunctions, as the function only uses the linear projection matrix, is it correct that the image needs to be undistorted prior to the extraction of 2D pixel coordinates?

3) to be honest I am still struggling to understand how could you possibly calibrate for the (metric)scale by using only 1 point?

Thanks!

[Hunter McClelland]

For Question #1) It's our experience that unfortunately, inside the code, the extrinsic parameters and intrinsic parameters are bundled together for estimation.  Therefore, I don't think what you're describing is supported: Set the intrinsic parameters to values (say, from CalTech) and only estimate the extrinsic ones.

I'm not sure about the other questions,

-Hunter

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