Hi Gyula,
We do not officially support the files in the Output Params folder. The values produced in this folder are for experimental and research purposes only and we do not guarantee their correctness nor provide technical support for justifying the underlying calculations. Please also note that these parameters can be removed from future Pix4Dmapper versions without any prior notice.
Maybe it is worth checking out this community post: What is the local coordinate system
Cheers,
Teodora