Clarification on floor height | Forum

Clarification on floor height and origin offset for camera

I'm wondering If I could get some clarification on what needs to be set (correctly) in order to have a proper scale and connection with the floor in my scene.

I've calibrated my lens and camera in the new calibrator, am I correct that once this has been done I don't need to set the Delta cam transform in the origin tab of the Tracked camera board?

The problem is that the talent never quite seems to connect with the ground, there's always some slippage of the feet. Add to this the scene scale always feels a little bit 'big' which leads me to believe something is off with the transform.

Is there a way to ignore the calibration data for the tracking or at least to enter it manually?

Cookseyyyyy

Eifert@Aximmetry

Hi,

Yes, once you did the calibration in the new camera calibrator, you shouldn't set any Delta Cam Transform.

However, you will need to refer to the camera calibration file in your compounds. For example, this is in a Tracked Camera compound:

If you don't set any Calibration Profile, then you are effectively ignoring the calibration.
Note, this calibration profile file contains the Delta Transform and lens values. You can open the file with a text editor program and copy those values out from the file. And then you can set manually Delta Cam Transform and lens values if you want to see the difference parameter by parameter.

Warmest regards,

Cookseyyyyy

Ok I thought so. I've definitely using the calibration file but we're still not getting things looking quite correct in the scene. The scale isn't correct and the feet slide around a little bit, especially when moving the camera.

That leads me to believe either the calibration is slightly wrong or there's something going on with my floor height.

I'll experiment some more but this at least rules out once variable, the offset.

Eifert@Aximmetry

Hi,

If not sure where things go wrong, you can try your tracking and calibration in a new project and set things up again in the control boards. For example, you could use one of Aximmetry's example studios, like the [Studio]:News Room\News Room - TrackedCam_3-Cam.xcomp .

Also, in any compound, you can add the following to read out the current height of your camera:

The 2nd T (Pos) value is the height of your camera from the floor in your tracking system when using a calibration file in the Camera Tracking module.

Warmest regards,

Clarification on floor height and origin offset for camera

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