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View Full Version : Boujou feature tracking, need help


emrea
12-17-2005, 07:16 PM
Hi,
After feature tracking the "tutorial1 cottage" sequence, i look at info and number of tracks are about 10.000.In the tutorial work file (already feature tracked), number of tracks are about 25.000.I didnt udnerstand how the work file made.I used sensitivity at maximum but number of tracks are still about 12.000.How can i increase it?

I am asking this because, after camera tracking, when i import the camera data in 3dsmax from boujou, i see there is a little shaking but when i export the camera data from the tutorial work file (already feature tracked) it looks okay.I think that shaking is about the quality of feature tracking, because of the are not enough maybe?

beaker
12-18-2005, 12:11 AM
Adding more trackers is not necessarily going to make it track better. You need to mask off independently moving objects in the scene so it doesn't to to calculate them into the camera move. If the object is small enough boujou will usually see it and figure out that it is something else, but if its large or it is moving in a similar direction to the camera, then it can influence the track and screw it up.

emrea
12-18-2005, 12:19 AM
Thanks for help.
There is not moving object in the video, it is tutorial video file.
Why are the number of tracks in the project file bpj (already tracked) too much more? I used sensitivity in maximum but it is still less.

emrea
12-18-2005, 06:30 AM
Well, i found the problem,
When i import the camera data in to max there is a little shaking because boujou starting from frame1 and 3dsmax is starting from frame 0 :), in 3dsmax camera movement fallows the background video file with 1 frame different.
When i moved camera movement keys 1 frame, it is ok.

Pim_NL
02-22-2006, 10:58 PM
* kick *

Wow emrea! This is sooooo important to know!!! Al my tracking test where never 100%, and this little tip of starting the camera one frame later solved it all!!

Now i can re-render my little experiments and suddenly they look perfect!!

beaker
02-22-2006, 11:22 PM
The older versions of boujou used to default to frame 0 for the first frame which was always really annoying when I forgot about it. Luckily they changed it to 1.

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