[Bf-vfx] Blender camera tracking approach

[Remo Pini]

I kind of disagree...

If you have lens distortion in you footage, this would most likely be
bad and you would not want the final result to have that in it anymore,
sooo....

(1) shoot
(2) remove lens distortion
(3) track
(4) add 3d stuff
(5) composite

I'm having a hard time to think of a situation where you would WANT to
have lens distortion in your final product...

Cheers

Remo

> -----Original Message-----
> From: bf-vfx-bounces at blender.org [mailto:bf-vfx-bounces at blender.org]
> On Behalf Of Tobias Kummer
> Sent: Sonntag, 8. Mai 2011 3:49
> To: bf-vfx at blender.org
> Subject: [Bf-vfx] Blender camera tracking approach
> 
> Hey all!
> 
> Here are some of my thoughts on the matchmoving workflow in blender,
> after some discussion in IRC chat. Since I've never used Pfmatchit, I
> cannot say anything about it, but when Syntheyes was mentioned I
looked
> into it a little and thought its workflow might be suboptimal.
> It re-applies lens distortion on an image post-processing level, which
> is bad quality-wise. A better way would be setting blenders camera
> parameters, so the rendered output already has matching distortion and
> does not have to be altered afterwards (which brings up the topic
> blender real world camera settings - would be desirable anyway).
> See this (crappy) flowchart as illustration:
> http://www.pasteall.org/pic/12079
> 
> The first step in the proposed workflow accomodates for the fact that
> blender cannot draw lens distortions in the 3D viewport. So the
> outcoming undistorted footage is just used for visualisation purposes
> for the artist - for rendering/compositing, the original distorted
> footage would be used. This way, we skip the step that compromises
quality.
> As blender will have combined 3D/tracking functionality, we should
> leverage on that and not copy the tracking-only workflow of other
packages.
> 
> Please correct me if there are any major mistakes in my thoughts!
> 
> Greets,
> 
> Tobias
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