Surface not aligning

I’m having this same issue. There must be a way to reset the surface right?
My surface begins to animate within and outsidie of the tracking points.
Please help as I’m on a deadline.

I’m having this same issue. There must be a way to reset the surface right?
My surface begins to animate within and outsidie of the tracking points.
Please help as I’m on a deadline.

Hi Mary,
My X spline is rock solid. I had to create a lot of keyframes to get it to track well. My problem is the surface gets all wacky. It scales wider, then smaller then completely leaves the xspline box. choosing “Align surface” doesn’t fix this. The surface still animates as if it has keyframes. Can’t I reset the surface? I went through a lot of work to keyframe the xspline.

Hi Mary,
My X spline is rock solid. I had to create a lot of keyframes to get it to track well. My problem is the surface gets all wacky. It scales wider, then smaller then completely leaves the xspline box. choosing “Align surface” doesn’t fix this. The surface still animates as if it has keyframes. Can’t I reset the surface? I went through a lot of work to keyframe the xspline.

Hi Phil,
Did you track areas that were already tracked after adjusting the spline, or only move forward?
As an aside, it is usually a good idea to turn on your surface or your grid while you track so you can see how it is holding.

Hi Phil,

Did you track areas that were already tracked after adjusting the spline, or only move forward?

As an aside, it is usually a good idea to turn on your surface or your grid while you track so you can see how it is holding.

Hi Dave,

The X spline is only the data that the tracker is looking at. The surface and grid are representing the track, and the x-spline is only linked to that track and defines the area the tracker is looking at. Our tracker is looking at a pattern of pixels all moving relative to one another to define a surface. The problem you are describing sounds like a bad track, not a surface issue. The surface is how we display the data for the purposes of using it in a corner pin export. Correcting the x-splines does nothing to your track, and will not change your data. It can be used as roto, and it might help to think of it as that, but the roto sticking on where you adjust it will not necessarily imply that your track is solid. Only the grid sticking on and the surface sticking on shows you whether or not your track is solid.

Note: Turning manual keys on and adjusting the track WITH the surface tool will affect your track, and the splines because they are linked to the overall track.

If you have a reflection on the surface you are tracking, you will not get proper data because that reflection information is moving on another plane. I recommend tracking the edge of a screen to track it. You will also want to occlude objects passing over your track by garbage matting them out with x-splines on layers above the layer you are tracking to hold those shapes out.

We have some excellent tutorials on our website that you might find useful here:

Hope that helps,
Mary

Hi,
So, the surface data should not change from closing or opening. You can click “align surface” to get the corners to the edges of the frames and realign them onto your object as a workaround, but if the tracking data itself is wonky there’s nothing you can do but find a better track for your surface. Remember that your x-spline shape is not the surface data, it is just what is being looked at when the tracker is tracking. Check the grid and surface to see what the track is doing, like Martin suggested. You can try to track forwards and backwards to correct the shot based on your shapes you have made as a workaround too.
If your track is physically changing when you close and open your shot, please send an email with your shot in it to maryp@imagineersystems.com, or after hours send it to martinb@imagineersystems.com. Please include a frame of your footage, the footage, or specs of your footage if you can’t send frames. Whatever is easiest.
Cheers,
Mary

Hi,

So, the surface data should not change from closing or opening. You can click “align surface” to get the corners to the edges of the frames and realign them onto your object as a workaround, but if the tracking data itself is wonky there’s nothing you can do but find a better track for your surface. Remember that your x-spline shape is not the surface data, it is just what is being looked at when the tracker is tracking. Check the grid and surface to see what the track is doing, like Martin suggested. You can try to track forwards and backwards to correct the shot based on your shapes you have made as a workaround too.

If your track is physically changing when you close and open your shot, please send an email with your shot in it to maryp@imagineersystems.com, or after hours send it to martinb@imagineersystems.com. Please include a frame of your footage, the footage, or specs of your footage if you can’t send frames. Whatever is easiest.

Cheers,
Mary

Hi Dave,
The X spline is only the data that the tracker is looking at. The surface and grid are representing the track, and the x-spline is only linked to that track and defines the area the tracker is looking at. Our tracker is looking at a pattern of pixels all moving relative to one another to define a surface. The problem you are describing sounds like a bad track, not a surface issue. The surface is how we display the data for the purposes of using it in a corner pin export. Correcting the x-splines does nothing to your track, and will not change your data. It can be used as roto, and it might help to think of it as that, but the roto sticking on where you adjust it will not necessarily imply that your track is solid. Only the grid sticking on and the surface sticking on shows you whether or not your track is solid.
Note: Turning manual keys on and adjusting the track WITH the surface tool will affect your track, and the splines because they are linked to the overall track.
If you have a reflection on the surface you are tracking, you will not get proper data because that reflection information is moving on another plane. I recommend tracking the edge of a screen to track it. You will also want to occlude objects passing over your track by garbage matting them out with x-splines on layers above the layer you are tracking to hold those shapes out.
We have some excellent tutorials on our website that you might find useful here:

Hope that helps,
Mary

Hi, I have used Mocha a fair bit but never had this problem before (but I have not done these steps before either).

I have a layer that is not tracking well so I do the following steps:

I draw the x-spline around the screen I am tracking
Start tracking forwards
When I see the track going wrong I adjust the x-spline
Continue tracking
Adjust x-spline
etc

Now, when I add a surface, the surface is fine until it hits the point at which I adjusted my x-spline and now it just goes crazy and does not align to my x-spline.

Am I doing something wrong?

Thanks.

Phil

Hi, I have used Mocha a fair bit but never had this problem before (but I have not done these steps before either).
I have a layer that is not tracking well so I do the following steps:
I draw the x-spline around the screen I am tracking
Start tracking forwards
When I see the track going wrong I adjust the x-spline
Continue tracking
Adjust x-spline
etc
Now, when I add a surface, the surface is fine until it hits the point at which I adjusted my x-spline and now it just goes crazy and does not align to my x-spline.
Am I doing something wrong?
Thanks.
Phil

hi,
i have a similar problem…
i have to track a 12 min long clip, so i do the same steps as philspitler: track then adjust, then track etc.
during the work i don’t get any visible problem… my surface is fine all the time, follows perfectly my adjustments… until i close my project. when i reopen the project again my surface goes crazy. the four reference points of the adjustment track are still looking correct on all the keyframes i’ve made, but the surface does not align to them…
the x-spline look also correct (except few times where it goes also crazy between some keyframes, but it could be due to the keyframes, though i didn’t notice this before closing the project)…
when i try to fix the surface by drugging it’s corners, aligning them to the correspondent reference points, the surface will align only on that frame and then it will slowly go off the right position…
and this happened not only on one project…
first question: why it could happened? should i do something before closing a project in order to ovoid this?
second: is it possible now to restore the surface somehow?
i’m really desperate don’t know what to do…
could anybody help?
thanx a lot

hi,
i have a similar problem…
i have to track a 12 min long clip, so i do the same steps as philspitler: track then adjust, then track etc.

during the work i don’t get any visible problem… my surface is fine all the time, follows perfectly my adjustments… until i close my project. when i reopen the project again my surface goes crazy. the four reference points of the adjustment track are still looking correct on all the keyframes i’ve made, but the surface does not align to them…
the x-spline look also correct (except few times where it goes also crazy between some keyframes, but it could be due to the keyframes, though i didn’t notice this before closing the project)…

when i try to fix the surface by drugging it’s corners, aligning them to the correspondent reference points, the surface will align only on that frame and then it will slowly go off the right position…

and this happened not only on one project…

first question: why it could happened? should i do something before closing a project in order to ovoid this?

second: is it possible now to restore the surface somehow?

i’m really desperate don’t know what to do…
could anybody help?

thanx a lot