Re: Lens distortion conundrum

["Tim Leydecker" <BauerOink(at)gmx.de>]

hey guys,

that´s a great set of links you provided!

I´ve been doing some nice (but quite challenging)
3D elements for seamless integration into stills last year
and am now asked about my opinion wether there´s
much of an alternative to the Spheron Camera tools
(you buy support, get used to shoot two full dome 32bit
w/26 stop captures from a location and use a custom app
to derive spatial relationships but not much more of value).

So, some sort of Photogrammetry tool or even a
rugged scanning/meshing device could also become
an interesting alternative as long as it outwheights
multiple location renting and would ultimatively
allow 90°-360° freedom without too much manual input
(at least for the artdirectable layouts) in close realtime.

I´ll definitely suggest "registering" the fixed lenses to grids while
the guys go through all those f-stops for the realworld lightsources
anyway. Seems one could even get pretty close with a custom
NURBS surface mapped with 32bit footage whose Isoparms are
morphed via blendshaped (according to the real lens´ distorted grid).
Would give good visual feedback while keeping bitdepths intact.
(as long as you don´t use a Maya surfaceshader or AA filters...).

Worth a test. Thanks again for the inspiration. Keep it coming!

Cheers

tim





----- Original Message ----- 
From: "Joe Laffey" <joe(at)laffey.tv>
To: <XSI(at)Softimage.COM>
Sent: Wednesday, January 10, 2007 1:37 AM
Subject: Re: Lens distortion conundrum


On Wed, 10 Jan 2007, Tim Leydecker wrote:

> Can you guys recommend a workflow or range of
> products geared towards identifiying, editing and
> manipulating Lens distortion effects in footage?
>
> I´m looking for both the adding and removing
> of such effects and would also welcome any
> links geared towards POV reconstruction
> based on limited sourceinput available.
>
> E.g. Retrieving all sorts of valuable data from "drive by shootings"...

http://www.ssontech.com/ldtsumm.htm
http://www.thepixelfarm.co.uk/products/products.aspx?PID=1

Both of those work pretty well. One is $39US. The other is 100Pounds
Sterling (~$193US)

But you would be amazed at how often you don't need to worry about it, or
can fake it with a grid warp, etc. But when you need it, you really need
it.

--
Joe Laffey                |       Visual Effects for Film and Video
LAFFEY Computer Imaging   |     -------------------------------------
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