VDB compute velocity

   1261   2   1
User Avatar
Member
46 posts
Joined: July 2015
Offline
hi,

i have a vdb sequence with only density...
i want to compute velocity (like the trail sop) and merge it into it, so i have in the end a volume with density and vel...
is that posdible? and if yes how (maybe by subtracting current frame P from previous frame P?)
Edited by soulcage_dpt - Sept. 14, 2022 02:31:52
User Avatar
Member
4516 posts
Joined: Feb. 2012
Offline
Hi,

You can try using Volume Optical Flow SOP.
Senior FX TD @ Industrial Light & Magic
Get to the NEXT level in Houdini & VEX with Pragmatic VEX! [www.pragmatic-vfx.com]

youtube.com/@pragmaticvfx | patreon.com/animatrix | animatrix2k7.gumroad.com
User Avatar
Member
46 posts
Joined: July 2015
Offline
thx for the hint, i will try
  • Quick Links