Conditions for OpenEXR example images

Dear Sirs,

under which conditions does ILM release the OpenEXR example images found 
http://www.openexr.com/downloads.html? Background for this question is 
the following: As a member of the German delegation of the JPEG 
committee (ISO SC29/WG01) I'm currently looking into the evaluation of 
floating-point based high-dynamic range compression algorithms. However, 
finding suitable test material turned out to be quite hard. OpenEXR and 
the openEXR sample images look like an excellent source the JPEG should 
consider - however the licensing conditions of the posted images are 
unfortunately not clear enough to allow this right away.

Hence, I'm kindly asking you under which conditions it is acceptable to:

o) use the images as test material for internal testing in the ISO only
and/or

o) use the images as test material in scientific publications?
and/or

o) reprint the images as part of a scientific publication?

Could you provide me with a contact point who could provide definite 
answers for the above questions?

Best regards, and greetings from the University of Stuttgart, Germany,

Thomas Richter