How do I convert points in IJK coordinates to points in RAS coordinates?

[zhuyingxinxs (颖心 朱)]

I currently know the coordinates of a marked point in IJK coordinates. How do I get the coordinates of this point converted to RAS coordinates?

[pieper (Steve Pieper (Isomics, Inc.))]

See this info:
https://www.slicer.org/wiki/Coordinate_systems