In Blue Kenue:
Create a new regular grid (covering your area of interest), (origin, delta, counts, and angle if appropriate)
- "File->New->Regular Grid..."
Map the VELOCITY UV object to your new grid.
- Select the new grid as your current object in the WorkSpace
- Use "Tools->Map Object" and select VELOCITY UV when the dialog comes up.
This creates a r2v file.
Hope this helps.
Cheers... Martin