Revision as of 19:46, 27 February 2017

Main page → Calibration → Calibration Squares

During Calibration process, a calibration square is used to define global coordinate axes as well as the ground plane for the capture volume. Each calibration square has different vertical offset value. When defining the ground plane, Motive will recognize the square and ask user whether to change the value to the matching offset.

Custom Calibration Square

Calibration Squares

Square Type	Descriptions
	CS-100: Used to define a ground plane in a small, precise motion capture volumes. Long arm: Positive z Short arm: Positive x Vertical offset: 11.5 mm Marker size: 9.5 mm (diameter)
	CS-200: Long arm: Positive z Short arm: Positive x Vertical offset: 19 mm Marker size: 14 mm (diameter)
	CS-400: Used for general for common mocap applications. Contains knobs for adjusting the balance as well as slots for aligning with a force plate. Long arm: Positive z Short arm: Positive x Vertical offset: 45 mm Marker size: 19 mm (diameter)
	Legacy L-frame square: Legacy calibration square designed before changing to the Right-hand coordinate system. Long arm: Positive z Short arm: Negative x

Coordinate System (Motive 1.7+)

For Motive 1.7 or higher, Right-Handed Coordinate System is used as the standard, across internal and exported formats and data streams. As a result, Motive 1.7 now interprets the L-Frame differently than previous releases:

Motive 1.6 and earlier L-Frame long (marked Z) "leg" interpreted as -Z, L-Frame short (unlabeled) leg interpreted as +X	Motive 1.7+ L-Frame long (marked Z) "leg" interpreted as +Z, L-Frame short (unlabeled) leg interpreted as -X
Motive 1.6 L-Frame	Motive 1.7 L-Frame

If you wish to obtain the same coordinate system as in the old releases, you can simply rotate the L-Frame 180° around the Y-axis before setting the ground plane: