HELP with Camera Match/Tracking

HELP with Camera Match/Tracking

I'm looking for help with camera matching and motion tracking.
The examples in the help file don't seem to help me much.
They tell you what numbers to type in but don't explain why or where
the numbers came from.

Help... anyone??

Paul.

HELP with Camera Match/Tracking

> I'm looking for help with camera matching and motion tracking.
> The examples in the help file don't seem to help me much.
> They tell you what numbers to type in but don't explain why or where
> the numbers came from.

> Help... anyone??

> Paul.

The numbers are X, Y and Z positions of the markers in the video clip. So
you need to use markers in your scene and get accurate position information
from that. Then you position helper objects in the positions of the markers

- Steve

HELP with Camera Match/Tracking

Quote:

>The numbers are X, Y and Z positions of the markers in the video clip. So
>you need to use markers in your scene and get accurate position information
>from that. Then you position helper objects in the positions of the markers

>- Steve

XYZ relative to what??
I think this is what I am not understanding.

Can you step me through this??

Thanks,
Paul.

HELP with Camera Match/Tracking

Quote:

> XYZ relative to what??
> I think this is what I am not understanding.

> Can you step me through this??

> Thanks,
> Paul.

Ok, on their example they take one point and use that as 0,0,0 in xyz

so....

treat one point in your scene as 0,0,0 and measure the other reference
points relative to that point.

Taking a desk as an example (since it is usually right angled)

If you have the near left corner of your desk as 0,0,0 then the xyz for your
near right corner would be

the distance between the two points,0,0

since the
y and z will be the same (roughly)

the far left corner would be

0, distance from near left, 0

since the x and z
would be the same.

You also need points that are in a different z axis, say the top of the
monitor for example.

easier to get accurate measurements on a smaller scale.

Try sticking boxes on a table and measure away....

Hope this clears it up,

- Steve

What are these functions for? The must be powerful stuff - they look very
complicated. Where can I find sort of manuals for them?

Kal