Image Registration Value Conversion

Ok, whatever, I’m not asking my question to play on the terminology, but to understand the calculated conversions and how the position or translation values ​​are obtained in the different formats, same question for the rotation.

How position in XMP (e.g: <xcr:Position>0.714479148115481 -0.177270951092812 -0.0264891105221016</xcr:Position>) is transformed in boujou in -0.3046422104944024 -6.548147643347439e-002 0.6674671647344179 ?