Head Tracker Element

Summary ¶

	Head Tracker
Info
Category:	Kinect		AddIn:	Kinect I
Creator:	OkazoLab		Scope:	Parent event
Owns Snippets:	None		Usage:	Snippets

Properties ¶

Name	Description	Constraints	Type	On runtime change
Kinect Settings
Calibrate Kinect	Opens the Kinect calibration window	Design Time..	Boolean
Skeleton Mode	Defines whether head tracking requires a body skeleton to be detected first. The skeleton mode may increase the tracking accuracy but demands a body in a frame, which is not a case for short distances.	Normal..	Boolean
Distant Mode	Defines whether head tracking is operates in the distant mode, with the optimal range between 0.8 to 4 meters. If false, the near mode will be used, with the optimal range between 0.4 and 3 meters. The X-Box Kinect devices ignore this property because they can operate only in the distant mode	Normal..	Boolean
Color Image Format	Defines a format for the color images obtained from a Kinect sensor	Design Time..	ColorI..
Depth Image Format	Defines whether head tracking is operates in the distant mode, with the optimal range between 0.8 to 4 meters. If false, the near mode will be used, with the optimal range between 0.4 and 3 meters. The X-Box Kinect devices ignore this property because they can operate only in the distant mode	Design Time..	DepthI..
Settings
Triggering Mode	Defines the work program for the element.	Design Time..	stTarg..
Fixation Duration	When the triggering mode is fixation, the property defines the duration (in ms) of the time interval in which fixation of head position/vector is required.	Normal..	clTime
Head Position
Position Validation	Defines whether the head position is validated to the bounding sphere at runtime	Normal..	Boolean
Bounding Center	Defines the center of the valid bounding sphere for the head position (in meters)	Normal..	Point3D
Bounding Radius	Defines the radius of the valid bounding sphere for the head position (in meters)	Normal..	Double
Head Vector
Vector Validation	Defines whether the head vector is validated to the predefined ranges at runtime	Normal..	Boolean
Roll Range	Defines the valid range for the head roll angle	Normal..	clRange
Pitch Range	Defines the valid range for the head pitch angle	Normal..	clRange
Yaw Range	Defines the valid range for the head yaw angle	Normal..	clRange
Tracking Status
Newest Sample	Returns the tracking sample	Status..	stKine..
Is Head Detected	Indicates whether the head is detected in the current tracking	Status..	Boolean
Is Valid Head Vector	Indicates whether the current head vector is valid across all defined ranges of head angles	Status..	Boolean
Is Valid Head Position	Indicates whether the current head position is within the defined bounding sphere	Status..	Boolean
Current Status	Returns a text line describing the current status of head tracking	Status..	String
Runtime Status
Is Triggered	Indicates that the element has been triggered by end of the playback at least once, since the onset of the parent event.	Normal..	Boolean
Triggering Time	Indicates the latest event time when the element was triggered (in ms elapsed since the onset of the parent event)	Status..	clTime
Frame Rate	Returns the current framerate of head tracking (times/sec)	Status..	clTime
Status View	Returns the current Kinect color frame and detected skeletons for showing on the Status Screen.	Normal..	ImageS..
Control
Is Enabled	If set to false the element is completely omitted when the experiment is run	Design Time..	Boolean
Title	Title of the element	Design Time..	String

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Demo Video¶

Snapshots ¶

Snapshot 1

Snapshot 2

Practical Use ¶

Technique 1 ¶

1. Step 1
2. Step 2
   ...
   === Technique 2 ===
3. Step 1
4. Step 2
   ...
   
   
   

    // Check the trial outcome. Result and RT just other user variables
   
   // insert code snippet here..
   
   

              
   ...
   == Notes ==
   ...
5. Insert Notes here..
6. Insert Notes here..