RE: Motion Vector output artifacts. Help!!!

["Sven Constable" <sixsi_list(at)dog-off.de>]

I also came across this. Seems to be some kind of inter-frame interpolation of vertex movement. I think I fixed it with plotting the entire deformations into shapes. With a keyframe on every or every 2nd frame.

 

cheers,

sven

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From: owner-xsi(at)Softimage.COM [mailto:owner-xsi(at)Softimage.COM] On Behalf Of Lee Hallett
Sent: Donnerstag, 18. Oktober 2007 18:45
To: XSI(at)Softimage.COM
Subject: Motion Vector output artifacts. Help!!!

Hi peeps.

I'm outputting motion vectors using the standard (built in) mental ray 'motion' framebuffer output to use in Reelsmart motion blur, and have hit a problem I can't seem to resolve. I'm getting strange artifacts on both the rendered image and the motion vector (tiff, 16bit) output. I've attatched an image to show the artifacts.

Using 32bit 6.01 (on XP64), model is envelope, some shape animation, modelling frozen, simple SRT on the model root. Has anyone else come across this?

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