View Full Version : problem on applying motion vector

07 July 2009, 09:00 AM
Hi everyone
I'm doing a motion blur test in maya and trying to use the motion vector pass

So far I have no problem in rendering the mv pass in maya
the mv pass and the original layer are perfectly match and without any offset

As you can see my attached image, however, there are some undesired sharp edges appear between the ground and the moving object, seems the RSMB vector fails to calculate overlapped objects with different moving direction/speed.

SO my question is: is it normal? or I missed any steps? How can I fix it without exculding the ground from the vector pass?

Thanks alot

07 July 2009, 05:20 AM
can anybody help?

07 July 2009, 05:54 AM
Yes this is normal, unfortunately this is just a limitation of using this method. it cant properly motion blur those edges due to aliasing and the fact that it cant separate objects, to properly blur those edges you will need to break your scene up into render passes

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07 July 2009, 05:54 AM
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