The LUT3D element specifies a 3D LUT to apply.
This attribute is optional. If it is not specified, the default is "trilinear".
<ProcessList id="b5b90615-573b-4959-a838-f35e0e588ac2" version="1.2">
    <LUT3D inBitDepth="32f" interpolation="tetrahedral" outBitDepth="32f">
        <Array dim="48 48 48 3">
 0.000669299  0.000704187  0.000766901
 0.001848371  0.001297010  0.010368987
 0.002599007  0.001144927  0.023227118
<!-- 48*48*48-3 lines omitted -->
        </Array>
    </LUT3D>
</ProcessList>