Re: 3D Tracker

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

Hey Jordi,

I´d like to add that there´s a need for single image tracking and
camera reconstruction from such. To my knowledge only the
http://www.photomodeler.com/

offers such functionality - e.g. if there is an imagesequence there´s
ususally loads of tools ranging from freeware voodoo to Boujou
that allow to create and export a final 3Dtrack w/camera to XSI
but if it´s a single image to work from one is mostly stuck with
manual fiddling and guestimating values and battling the 3D camera.

I don´t want to sound cocky but imho it would be useless to have
"just another" 3Dtracker "copied" into the XSI interface instead
of reworking the camera manipulation tools (as you also pointed out)
to easily allow for changing aspectratios, focal lengths and the
distances between object2camera independently from each other,
e.g. not being restricted to ratios based on the imageratio and center.

And also being able to move the 3D camera in the direction/vector of
it´s interest (in the direction it looks at) with _OR without changing
the focallength and aspectratio would be desireable as this could
mimik a "cropping" behaviour with free aspectration currently difficult
to achieve.

Simple example, I track a 4000x5120 plate, take the camera and
"crop in" at 1200x1600, render and the element fits correctly onto
the large plate even thought the "crop/zoom" occured off-center.

Cheers

tim




----- Original Message ----- 
From: "jordibares" <jordibares(at)the-mill.com>
To: <XSI(at)Softimage.COM>; "Luc Froelicher" <lulu(at)alamaison.fr>
Sent: Wednesday, January 17, 2007 5:23 PM
Subject: Re: 3D Tracker


> Not really, is about 2 different issues.
>
> 1. a image based tracking like PFTrack would be wonderful to have integrated
> inside XSI
> 2. In reality I rather need different tools to help aligning the camera than
> doing a full 3D track which is something I already have perfectly solved via
> 3DEqualizer.
>
> Hope it helps
> jb
>
>
> On 17/1/07 15:40, "Luc Froelicher" <lulu(at)alamaison.fr> wrote:
>
> > is this some kind of XSI port of REALVIZ ? makes me wonder ...
> >
> > Ahmidou Lyazidi wrote:
> > > > something like this?
> > > >
> > > http://www.naskafilms.com/REALVIZ/HATOR/R_D/plugs_softs_naska/NSKTrack.061210
> > > dvx.avi
> > > >
> > > <http://www.naskafilms.com/REALVIZ/HATOR/R_D/plugs_softs_naska/NSKTrack.06121
> > > 0dvx.avi>
> > > >
> > > > 2007/1/17, jordibares <jordibares(at)the-mill.com
> > > > <mailto:jordibares(at)the-mill.com>>:
> > > >
> > > >     I would suggest Softimage to look at PF track as a licensing
> > > >     engine solution which I am sure could be very very welcome both in
> > > >     the 3D area and the 2D area of XSI but also to provide extra tools
> > > >     for manual tracking which actually nobody is doing.
> > > >
> > > >     One little example I keep giving is the ability to rotate the
> > > >     camera along an scene line/axis/point and dolly/zoom along a given
> > > >     point 2Dpixel/3D position so make our lives easier.
> > > >
> > > >     Jb
> > > >
> > > >
> > > >
> > > >
> > > >     On 17/1/07 00:49, "Eriya Ito" <eriya.ito(at)grapecity.com
> > > >     <mailto:eriya.ito(at)grapecity.com>> wrote:
> > > >
> > > >         Any script / tool to track translation of a 3D model to BG
> > > >         rotoscope.
> > > >         Rotation & scaling support also would be more than terrific
> > > >         but for now,
> > > >         I need to track an object to somebody's hand and boy do they swim
> > > >         around.
> > > >         I know there are 3rd party tracker such as Boujou but I mean, any
> > > >         tracking
> > > >         feature built-in XSI that I missed...
> > > >
> > > >         Something like Maya Live (not trying to start another xx vs xx
> > > >         thread...
> > > >         ;-)
> > > >
> > > >         TIA,
> > > >         Eriya
> > > >
> > > >         ---
> > > >         Unsubscribe? Mail Majordomo(at)Softimage.COM
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> > > >
> > > >
> > > >


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