Displacement map baking with V-Ray in Houdini is possible through the V-Ray BakerTool.
The creation process is done in two render steps: first, we create a render element that contains information about the position of each point of the lowRes object in space. Then, we make a render element with information about the normals of the lowRes object.
As a final step, we render the HighRes object displacement map onto the LowRes object.
The geometry creation process is not a subject to this tutorial.
You can download an example scene from the download buttonbelow.