PDA

View Full Version : export motion vector data....

1armedScissor
02-23-2005, 04:54 PM
Does anyone know how to export and read motion vector data from mental ray? I'm not interested in the lm_2DMV and reelsmart solution either. I'm hoping to generate an ascii file that contains all the motion vector information within a scene. Does anyone know how this is done?
Thanks in advance!
1armedScissor
02-23-2005, 06:59 PM
anyone? All ideas are welcome :)
pierrejasmin
03-14-2005, 02:12 AM
The shader encodes "projected" Motion Vectors into images which is what a post Motion Blur effect needs . If you want to have 3D object motion instead you will have to tap the actual Mental Ray FrameBuffer.

The lm shader uses this encoding:

Start here:http://www.revisionfx.com/generalfaqsMotionVectors.htm

And press on all the links :)

Hopefully the encoding is all explained...

Pierre
www.revisionfx.com
1armedScissor
06-17-2005, 04:08 PM
thanks for the reply, but I'm wondering if it is possible to just simply write out the data, possibly embedded in a regular rendered image file. Instead of generating a new image file.
CGTalk Moderation
06-17-2005, 04:08 PM
This thread has been automatically closed as it remained inactive for 12 months. If you wish to continue the discussion, please create a new thread in the appropriate forum.