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Sensor type
B&W CMOS
Degrees of freedom
3 (X, Y, Z translation)
Tracking range
50 x 50 x 50 meters
Maximum number of targets
Up to 32 independent 3DOF bodies *
Maximum number of cameras
System can be expanded to 32 cameras *
Precision
< 0.25 millimeters over 3 x 3 x 3 m volume; optical sensor is 1:80,000 arc at 75% rms
Accuracy
< 0.25 centimeter over 3 x 3 x 3 m volume
Calibration
3 minute process using digital calibration board
Update rate
Up to 175 Hz
Minimum latency
20 milliseconds
Maximum cable length to cameras
100 metres
Interface
Ethernet, using VRPN
RS-232, 115.2 kbs, streamed or polled
Ambient conditions
Indoor fluorescent only
Size & weight
Processor: 420 x 370 x 180 mm (10 kg)
Sensors: 240 x 57 x 80 mm (900 g)
Targets: 3 x 3 x 5 mm (2 g)
Software support
Directly connect to WorldViz Vizard VR toolkit; DLL for Windows; C source library for Linux
Notes
(*) Actual update rate depends on the number of targets and number of cameras. Please contact WorldViz for details on this tradeoff
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PPT-H8 (8 sensor system)
The eight sensor system includes eight optical sensors, a PPT processor computer with control software, cable connections, and eight infrared targets. The eight camera system includes the following advantages over the four sensor system: 1) maximum coverage of tracking workspace (practically no ‘dead’ tracking zones), 2) optimal elimination of line-of-sight occlusion, 3) optimal robustness and precision.
PPT-H4 (4 sensor system)
The four sensor system includes four optical sensors, the PPT processing unit, the easy-to-use PPT motion capture software, cable connections, and two infrared targets. The PPT-H system has the following advantages over the original PPT-X system: (1) Higher resolution cameras providing improved sensitivity and accuracy, (2) faster update rates of 175 Hz, (3) ability to track up to 32 targets with up to 32 cameras *.
Features:
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50 x 50 meters wide area tracking |
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Instant calibration |
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Fully wireless targets |
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Up to 32 optical sensors * |
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Sub-millimeter precision |
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Supports 3DOF position, or 6DOF position and orientation with optional sensor cubes |
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Less than 20 milliseconds latency |
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Easy installation |
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Resilience to metallic interference |
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No strobe lights needed |
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Competitive price |
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Improved accuracy and performance |
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Ease of Use
The intuitive graphical user interface includes a wizard for instant calibration using a digital calibration board. PPT directly connects to the WorldViz Vizard VR toolkit. DLLs for Windows, and a C source library for Linux are available. Simple streaming or polling via RS-232 serial port 115.2kbs interface, as well as using the industry standard VRPN protocol.
Position & Orientation Tracking
Are you looking for a 6DOF integrated position & orientation real-time tracking solution? WorldViz recommends combining PPT with an inertial orientation technology such as the InertiaCube²™ by InterSense. This hybrid system has proven itself as one of the most powerful and highly reliable full tracking solutions currently available
Calibration
Takes 3 minutes. All systems come with an automatic calibration rig (shown below) that automatically calibrates the entire system - all three axes.
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