Camera Tracking – lens distortion issue » Bartek Skorupa. Blender Position Pass. The solution of mine is as follows: What I will get from this is an image where RED channel represents X position in blender units, GREEN is Y position on blender units and BLUE is Z position in blender units.
I set material to override all of the materials and make it node material. Set up of nodes is as follows: Unfortunately all negative values are by default clipped, so I added 100 (I think that this is enough) to all channels.Then in compositing we have to subtract previously added value, so the setup would be as follows: The resulting image will be "position pass" where R is X position, G is Y position and B is Z position. 2.5D relighting in compositing with Blender (using spherical harmonics)Francois Tarlier's blog. Introduction About a year ago, I was watching a great presentation at the Nuke Master Class by Roy Stelzer (2D TD at Double Negative) about “2.5D Relighting inside of Nuke”.
There is 3 videos which you can download from The Foundry and also files which goes with. I recommend you to watch those videos especially if you are not familiar with relighting in post-production. Apprendre Blender #01 Présentation de la formation.