Camera Poses

[amirN]

I am trying to export camera poses into 4*4 transform matrix but I am facing two issues. First Agisoft is not giving me any reference. I have tried adding some marker but it is not soling the problem. Second, every each time I am exporting those 4*4 camera poses, it is giving me different matrix even for same dataset, I would nappreciate if you help how to get stable robust 4 by 4 matrix ?
Thanks,
Amir

[amirN]

I have
<region>
          <center>1.3112379950159891e-01 -8.3512267284101260e-01 -7.4274808806841328e+00</center>
          <size>3.8231025353074077e+00 2.9446487940847872e+00 2.5313643731176860e+00</size>
          <R>-6.5406131049487087e-02 9.9608648376818421e-01 5.9445394064405473e-02 9.9727538910922409e-01 6.3215103764441019e-02 3.8021690297730351e-02 3.4115045041489635e-02 6.1770280154667491e-02 -9.9750719104747876e-01</R>
        </region>
such information IN SENSOR section of my XML file, and I also have 4 by 4  transform matrix for each camera. But I am not sure how I can uses these information for extrinsic information of cameras. I appreciate if you can help please.