Hasta La Motion!

I’ve done a few textbook tracking shots, bits of planar tracking in Mocha and some work in Boujou, and I’ve just hit a stumbling block. How would I get a 3D object to float above a person’s head as they move around?

The shot that I’ve setup is essentially a nodal pan, the camera remains on the spot as the person moves around the scene. So far I’ve managed to get a reasonable solve in Boujou, at least as far as the overall scene is concerned. The resulting point cloud reflects the scene geometry, so I’m able to get my bearings; though I’m obviously still reduced to animating the virtual object by hand through the scene. I’m helped a great deal by the predicted points; though it’s hardly a "rock solid" approach to pinning the abject to the individual as they move around.

Any offers on the theory of how this shot is done?

Thanks in advance,

Nick

I try to track a moving camera in Boujou 5. As I finished the tracking, camera solving, I cannot select individual points, if I select one, all are selected automatically.

What is your suggestion?

Thanks in advance.

caitya

I’ve tracked some footage and now want to export the camera data to Maya. However, once imported into Maya the baked camera animation stops at frame 312. Anyone know why this is happening?

The footage is 1920×1080 interlaced at 25fps, and I deinterlaced it using field separation so I could track it better. This changes the frame rate to 50.

I’ve tried changing the frame rate back to 25 and exporting it, which does actually allow the animation to continue for more than 312 frames but it still stops at the exact same point in the footage. I’ve also tried changing Maya’s playback speed to 25 and 50 with no success.

Any help is appreciated.

Thanks

I’ve tracked and solved a shot in boujou and pftrack and the results are similar. Objects i know to be in the foreground come out in the background in the 3d view and vise versa.
the camera move seems to be correct. The focal length is set at a fixed 40mm. (the shot is underwater so hard to determine, but it was expected to be about 40) the camera is a free move but is very slight and almost like a nodal pan.

is there any way to invert the solve in either boujou or pftrack?

All help is much appreciated.
Cheers

Dom.

Thanks