Optitrack calibration - Revision history

Jca at 15:20, 24 August 2022

2022-08-24T15:20:59Z

← Older revision		Revision as of 17:20, 24 August 2022
Line 28:		Line 28:
	Maybe a problem with the calibration wand.		Maybe a problem with the calibration wand.

	[[File:track-lines-16of16-center.png]]		[[File:track-lines-16of16-center.png \| 500px]]

	The trace lines from the cameras to the marker show that they all meet close to the center of the marker.		The trace lines from the cameras to the marker show that they all meet close to the center of the marker.
	This should indicate a valid and precise result.		This should indicate a valid and precise result.

Jca at 15:20, 24 August 2022

2022-08-24T15:20:22Z

← Older revision		Revision as of 17:20, 24 August 2022
Line 27:		Line 27:

	Maybe a problem with the calibration wand.		Maybe a problem with the calibration wand.

			[[File:track-lines-16of16-center.png]]

			The trace lines from the cameras to the marker show that they all meet close to the center of the marker.
			This should indicate a valid and precise result.

Jca: /* Calibration scale results */

2022-08-24T15:08:47Z

Calibration scale results

← Older revision		Revision as of 17:08, 24 August 2022
Line 7:		Line 7:

	[[File:0000mm.jpg \| 500px]]		[[File:0000mm.jpg \| 500px]]
	The first position of the test marker.
			The first position of the test marker with the corner aligned to about 0.3mm on the ruler.

	[[File:distance-0mm.png \| 500px]]		[[File:distance-0mm.png \| 500px]]
	Optitrack reference detection
			Optitrack reference detection is less than 0.1mm.

	[[File:1500mm.jpg \| 500px]]		[[File:1500mm.jpg \| 500px]]
	The end position of the test marker after movement of 1500mm.
			The end position of the test marker after movement of 1500mm, the same corner is at about 1500.6mm.

	[[File:distance-1500mm.png \| 500px]]		[[File:distance-1500mm.png \| 500px]]
	Optitrack distance measurement of the 1500mm movement.
			Optitrack distance measurement of the 1500mm movement shows too much.

	The actual movement starts at about 0.3mm and ends at 1500.6mm - a distance of 1500.3mm with an accuracy of less than 0.5mm.		The actual movement starts at about 0.3mm and ends at 1500.6mm - a distance of 1500.3mm with an accuracy of less than 0.5mm.

	The ~~optitrack~~ say 1503.97mm a scale error of about 0.3%		The Optitrack say 1503.97mm a scale error of about 0.3%

	~~May be~~ a problem with the calibration wand.		Maybe a problem with the calibration wand.

Jca at 15:06, 24 August 2022

2022-08-24T15:06:26Z

← Older revision		Revision as of 17:06, 24 August 2022
Line 6:		Line 6:
	The system is just calibrated, there is perfect coverage.		The system is just calibrated, there is perfect coverage.

	[[File:0000mm.jpg \| ~~800px~~]]		[[File:0000mm.jpg \| 500px]]
	The first position of the test marker.		The first position of the test marker.

	[[File:distance-0mm.png]]		[[File:distance-0mm.png \| 500px]]
	Optitrack reference detection		Optitrack reference detection

	[[File:1500mm.jpg]]		[[File:1500mm.jpg \| 500px]]
	The end position of the test marker after movement of 1500mm.		The end position of the test marker after movement of 1500mm.

	[[File:distance-1500mm.png]]		[[File:distance-1500mm.png \| 500px]]
	Optitrack distance measurement of the 1500mm movement.		Optitrack distance measurement of the 1500mm movement.

Jca at 15:05, 24 August 2022

2022-08-24T15:05:36Z

← Older revision		Revision as of 17:05, 24 August 2022
Line 6:		Line 6:
	The system is just calibrated, there is perfect coverage.		The system is just calibrated, there is perfect coverage.

	[[File:0000mm.jpg]]		[[File:0000mm.jpg \| 800px]]
	The first position of the test marker.		The first position of the test marker.

Jca: Created page with "back to ASTA motion capture ===Calibration scale results === The test moves a marker a distance of 1.5m and this should be the distance Optitrack should show. The system..."

2022-08-24T15:01:59Z

Created page with "back to ASTA motion capture ===Calibration scale results === The test moves a marker a distance of 1.5m and this should be the distance Optitrack should show. The system..."

New page

back to [[ASTA motion capture]]

===Calibration scale results ===

The test moves a marker a distance of 1.5m and this should be the distance Optitrack should show.
The system is just calibrated, there is perfect coverage.

[[File:0000mm.jpg]]
The first position of the test marker.

[[File:distance-0mm.png]]
Optitrack reference detection

[[File:1500mm.jpg]]
The end position of the test marker after movement of 1500mm.

[[File:distance-1500mm.png]]
Optitrack distance measurement of the 1500mm movement.

The actual movement starts at about 0.3mm and ends at 1500.6mm - a distance of 1500.3mm with an accuracy of less than 0.5mm.

The optitrack say 1503.97mm a scale error of about 0.3%

May be a problem with the calibration wand.