3d Qualifier Help Please

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Joshua Morin

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3d Qualifier Help Please

PostTue Jan 15, 2019 9:21 pm

Can someone help me understand the 3d qualifier please? I have read about it in the manual and mostly understand, but what happens when the thing that you are qualifying in the image moves? For example you select an object and you pull the matte you would like, but then the object moves somewhere else on screen? Is there a way to track the object to move the 3d qualify with it?

Thanks in advance...
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Michael Tiemann

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Re: 3d Qualifier Help Please

PostTue Jan 15, 2019 10:43 pm

Put a power window on the object you want to track and then track it. Apply the qualified to the mask of the window. Very standard stuff discussed at length in the manual.
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Joshua Morin

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Re: 3d Qualifier Help Please

PostThu Jan 17, 2019 4:36 pm

Thanks for the response Micheal. The parts I read about the 3d qualifier were from the second qualifiers chapter, but it doesn't mention any tracking with 3d qualifier. I just tested out what you said and my 3d qualifying lines do not follow my tracked window. Can you tell me where in the manual you read about this please or point me in the right direction?

Thanks in advance!
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xunile

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Re: 3d Qualifier Help Please

PostThu Jan 17, 2019 6:42 pm

The 3d qualifier is used to select a range of colors that you want to use as a key. If the colors of the object you want to track are pretty unique to the object(don't really appear elsewhere in the scene), the 3d qualifier might be enough to pull the key even when the object moves. If you notice that the colors the 3d qualifier isolated appear in other places in your scene, you can then use a power window around your object which will isolate the key to within the power window. You then go to the tracker and track the object with the power window. If the tracking doesn't work, can you post a still of what you are trying to track, maybe someone can figure out why it isn't tracking correctly.
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without tracked power window
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2019-01-17.png
With tracked power window
2019-01-17.png (677.97 KiB) Viewed 67 times
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