Photogrammetry

[jussing]

Yup, it's called photogrammetry, and there's an expensive app here that'll do it for you:

http://www.photomodeler.com/pmpro09.html

If anyone knows of a freeware sollution, I'm all ears. :)

- Jonas

[SKODA]

A few years ago the photogrametry craze happened because computers and programers became powerfull enough to "enterpolate" or "extrapolate" the real world from a frame sequence or moving camera shot.

This was all very interesting but only used by the most high-end and well heeled post projects such as "fight club."

The idea of image modeling from a shot is neat, but it's preferable to shoot high res still plates to use as textures. A very high res Digital still or medium format camera is what you need for texturing 3D for the big screen. 2 or 4 megapixel is fine for TV. Propper 3D models are much more useful and accurate than enterpolated geometry.

The real boon to CG and post is Matchmoving using software like Boujou, Realviz Matchmover or Synth-Eyes. These programs use photogrametry to scan a shot and exactly reproduce the camera move for 3D or a compositing in Flame or After Effects.

Long story short, you can shoot people on greenscreen with a moving camera. Dolly, steadycam etc. You then scan the shot and the Matchmoving software will "solve" the camera's motion path using the same principals behind photogrametry. You then build a CG set and use the Camera solution to drive the 3D camera. This is how much of hollywood comping is done now.

Most high-end facilites who own Boujou have the software automatically solve the shot in the background as soon as the shot is entered into the database. That's how standard it's become.

s
k
o
d
a

[CGTalk Moderation]

This thread has been automatically closed as it remained inactive for 12 months. If you wish to continue the discussion, please create a new thread in the appropriate forum.