Re: Motion Vector output artifacts. Help!!!

["Ahmidou Lyazidi" <ahmidou.xsi(at)gmail.com>]

I also get this last time I tryed MB, it was on skinned characters(but it was on 4.2)

2007/10/18, peter boeykens <peter_b(at)skynet.be>:

looks familiar :-(

I've seen this in quite a few different flavors - only from XSI 5 and up.

 

each time was with motion blur rendering.

I've seen it on particles, displacement, hair and simply shape deformed meshes, so couldnt pinpoint it to anything but motion blur.

 

do the lines point to the origin and do they appear when you render the beauty pass with motion blur and with the shutter open?

this would at least point out that its not a "motion vector" specific problem, but a more general "motion blur" problem.

 

 

----- Original Message -----

From: Lee Hallett

To: XSI(at)Softimage.COM

Sent: Thursday, October 18, 2007 6:44 PM

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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