Offset track difficulty

Question

Offset track difficulty

Hello everyone,

When I use the offset track function, my four tracking points make a nice straight line as the image leaves the screen....all seems well. However, when I activate the transformation, the top two track points (3 & 4) dip down and there is a very strange perspective shift. Here are the shots if you can please offer any advice. Thank you very much.

http://gallery.me.com/craigwhitaker2#100178/Screen-20shot-202010-03-04-20at-2010 -34-56-20PM&bgcolor=black

Best,
Craig

Mac OS X (10.6.2)

Posted on Mar 4, 2010 7:49 PM

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Answer 1

Mar 5, 2010 10:17 AM in response to Craig Whitaker1

Hi Craig,

When you offset trackers 3 and 4, you accidentally moved the tracking points
instead of just the reference pattern and search region. To avoid this, zoom in
so you can see what you're doing. When you activate the offset track function,
note that an x appears in the reference pattern square. Drag the x,
not the tracking point.

Les

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Answer 2

Mar 5, 2010 3:45 PM in response to stuckfootage

Hi Les,

Thank you very much for your reply. I've gone and re-tracked my shot but it's still not working. What I'm noticing is that the offset track boxes are skewing as you can see in this image...

http://gallery.me.com/craigwhitaker2#100178/Screen-20shot-202010-03-05-20at-206- 39-11-20PM&bgcolor=black

The track lines look pretty good, tolerance was normally above 90% for most of the track. The other thing I'm seeing is that once I activate the stabilization node and apply the corner pin, the corner pin grid is not lined up on the image....

http://gallery.me.com/craigwhitaker2#100178/Screen-20shot-202010-03-05-20at-206- 39-11-20PM&bgcolor=black

Any suggestions?

Thank you very much,
Craig

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Answer 3

Mar 5, 2010 3:51 PM in response to stuckfootage

Les,

Here are two shots....one before the stabilize is activated, the other after.

Thank you.

Before:
http://gallery.me.com/craigwhitaker2#100178/Screen-20shot-202010-03-05-20at-206- 49-29-20PM&bgcolor=black

After:
http://gallery.me.com/craigwhitaker2#100178/Screen-20shot-202010-03-05-20at-206- 49-37-20PM&bgcolor=black

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