Digital humans the art of the digital double
Ever wanted to know how digital doubles are created in the movie industry? This course will give you an insight into how it's done.
# 1 09-07-2005 , 08:07 PM
kbrown's Avatar
Moderator
Join Date: Sep 2002
Location: London, UK
Posts: 3,198

2D Motion Blur - Strange Lines

Well, it's been a while since I asked something here user added image Anyway now I could use some help. I'm rendering my scene with Maya Software and 2D motion blur. On random frames of my sequence these strange lines appear

user added image

They don't appear without the motion blur. Does anyone know a solution to this? I really would like to stay away from 3D motion blur since the render times would skyrocket...


Kari
- My Website
- My IMDB

Do a lot, Fail a lot and Learn a lot!
# 2 09-07-2005 , 08:42 PM
mtmckinley's Avatar
The Maya Mountain
Join Date: Aug 2002
Location: Seattle, WA
Posts: 8,245
weird... do the lines appear where the geometry wires would be?

# 3 09-07-2005 , 09:08 PM
Alan's Avatar
Moderator
Join Date: Oct 2002
Location: London, UK
Posts: 2,800
how weird I've never seen anything like that before! can you post the scene file? or some more info... very weird stuff


Technical Director - Framestore

Currently working on: Your Highness

IMDB
# 4 09-07-2005 , 09:16 PM
kbrown's Avatar
Moderator
Join Date: Sep 2002
Location: London, UK
Posts: 3,198
Mike: No, the lines are pretty much random.

Pure: sorry, can't post the scene (work stuff). The scene is pretty simple though. There's a moving runway and a shaky camera. All geometry is polys. The runway is split into rows. When a row moves to the end, it jumps back to start. First I though the jumping was the problem but I'm not sure about that either as I animated the visibility to 0 during the jump.


Kari
- My Website
- My IMDB

Do a lot, Fail a lot and Learn a lot!
# 5 09-07-2005 , 09:18 PM
kbrown's Avatar
Moderator
Join Date: Sep 2002
Location: London, UK
Posts: 3,198
Oh... and the sky is envSky on an image plane.


Kari
- My Website
- My IMDB

Do a lot, Fail a lot and Learn a lot!
# 6 09-07-2005 , 09:30 PM
kbrown's Avatar
Moderator
Join Date: Sep 2002
Location: London, UK
Posts: 3,198
I think I solved this. Looks like it was the jumping after all. I just hid the rows one frame earlier and the lines were gone on my test frame. Still have to render out the whole sequence to be sure...


Kari
- My Website
- My IMDB

Do a lot, Fail a lot and Learn a lot!
# 7 10-07-2005 , 08:29 PM
kbrown's Avatar
Moderator
Join Date: Sep 2002
Location: London, UK
Posts: 3,198
yup, that was it... i hid the rows a little bit too late (within the blur length range). all is well again user added image


Kari
- My Website
- My IMDB

Do a lot, Fail a lot and Learn a lot!
# 8 10-07-2005 , 08:35 PM
mtmckinley's Avatar
The Maya Mountain
Join Date: Aug 2002
Location: Seattle, WA
Posts: 8,245
glad you figured it out. user added image

Posting Rules Forum Rules
You may not post new threads | You may not post replies | You may not post attachments | You may not edit your posts | BB code is On | Smilies are On | [IMG] code is On | HTML code is Off

Similar Threads