Handling White Point with Argyllcms

Reference Links: [Link1]

Scaling a White Point
White point depends on input device. If the  XYZ value for the White Patch can be measured, then the equivalent scale factor can be computed with 100/White_Y.

White Point may sometimes be determined incorrectly
Problem arises when the target white point is not white but green! In that case colprof may determine the white point incorrectly as true white patch has lower Y than green patch.