WorldViz PPT X

Wide-area Optical Motion Tracking

PPT (Precision Position Tracking) solutions break the cost-performance barrier, bringing customers high-quality optical motion tracking to cover very wide ranges (more than 50 x 50 meters) at competitive prices.

And the PPT product family continues to grow, bringing more functionality and ease of use to new and existing customers alike. As a real-time system, you get to see tracking results the instant a subject performs a motion. With the system’s power and ease of integration with existing real-time rendering tools, the PPT is an ideal solution for real-time applications such as Virtual Reality.

Features

Optimized for Virtual Reality Applications

WorldViz CAVE apartment

PPT tracks large areas (more than 50 x 50 meters) while maintaining high precision and accuracy. It presents excellent value for the real-time demands of immersive virtual reality applications. When combined with an off-the-shelf inertial orientation tracker, a PPT hybrid system provides 6DOF motion tracking with unparalleled performance and at an unbeatable price. Experience what you have been missing, start tracking wide areas today!

 

WorldViz PPT Calibration RigCalibration: Easy as one, two, three

WorldViz uses a high-speed technique that allows users to calibrate systems in mere minutes. With the sensors oriented in any way that optimizes your tracking volume, a small four-point calibration board is used for accurately defining the entire tracking volume and XYZ coordinate system. Since our systems uses factory calibrated lenses, you never need to be concerned about obtaining a satisfactory sensor linearization and you can rest assured that your workspace will calibrate quickly and robustly.

 

Features

  • Camera range up to 15 meters **
  • Instant calibration
  • Fully wireless targets
  • Portable: 8 sensors in 1 briefcase
  • Up to 8 optical sensors*
  • Sub-millimeter precision
  • Full 3DOF position tracking, or 6DOF position and orientation with optional sensor cubes
  • Less than 20 milliseconds latency
  • Easy installation
  • Resilience to metallic interference
  • No strobe lights needed
  • Competitive price

(*) Actual update rate depends on the number of targets and number of cameras. Please contact us for details on this tradeoff
(**) For a marker to be tracked, it must be visible by two or more cameras. Overall tracking space dimensions are determined by the camera range, camera layout, and background lighting


How does it work?

Optical sensors mounted in the corners of a room track active LED markers. As sensors make their way through the room, the sensors acquire data. Through rapid processing, the sensors’ data are converted to the accurate three-dimensional location of the markers.

Performance

PPT Studio 2013

WorldViz PPT Studio 2013WorldViz PPT Studio 2013 is your easy-to-use “mission control” for all things related to tracking individual markers or entire actors. PPT Studio 2013 and the accompanying quick start guide will speedily walk you through the steps of tuning your motion sensing cameras, calibrating the workspace for accurate tracking, and configuring any optional data processing plug-ins for your individual needs.

If you’re tracking situation is particularly demanding, you’ll be pleased to learn that PPT Studio 2013 includes some powerful features. For instance, PPT Studio 2013 is capable of calibrating across complex spaces requiring multiply chained frames of reference.

 

WorldViz Hybrid TechnologyHybrid Tracking

WorldViz 6 DOF Optical Inertial Hybrid Tracking Solution

With the WorldViz 6 DOF hybrid solution you combine the best of two entirely different tracking concepts. While optical systems are the most precise, reliable, and cost effective solution for wide-area position tracking, inertial systems are the top choice for precision orientation tracking. The long proven WorldViz hybrid system brings these two worlds together, outperforming traditional systems that rely on only one technology. You will find no other affordable solution providing more stability and precision.

 

How many cameras do I need?

WorldViz PPT SystemThe number of cameras you need depends on your application and the size of your workspace.

Powerwall™ applications requiring head (e.g., Eyes 2013) and hand (e.g., Wand 2013) tracking will find that a 2 camera system is sufficient, though for large screens or especially tight working volumes 3 or 4 total cameras is recommended.

CAVE™ applications generally require a minimum of 4 camera system, while CAVEs systems with more than 4 screens require a minimum of 6 camera system for reliable performance.

A head-mounted display system with wide-area walking requires a minimum of a 4 camera system for robust head tracking. If your applications also needs to track the user’s hands or feet, or you intend to have more than one user tracked simultaneously, then you’re best off with a minimum of an 8 camera system.

 

Technical Specification

Sensor type CCD
Degrees of freedom 3DOF position – standard optical only
6DOF incl orientation – with optional sensor
Maximum camera range 15 meters *
Suggested tracking space 10 x 10 x 10 meters *
Number of targets Up to eight independent 3DOF bodies
Precision < 1 millimeter over 3 x 3 x 3 m volume
optical sensor is 1:20,000 arc at 75% rms
Accuracy < 0.5 centimeter over 3 x 3 x 3 m volume
Field of view 68 degrees horizontal (Std)
88 degrees horizontal (Wide)
Calibration Less than one minute using digital calibration rig
Update rate 60 Hz
Minimum latency 18 milliseconds
Interface 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: 160 x 70 x 60 mm (500 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

(*) For a marker to be tracked, it must be visible by two or more cameras. Overall tracking space dimensions are determined by the camera range, camera layout, and background lighting

Compare PPT Editions

  PPT X PPT E
Sensor CCD CMOS
Maximum Number of Targets 8 32*
Maximum Number of Cameras 8 32*
Maximum Camera Range 15m** 20m**
Suggested Tracking Space 10m x 10m x 10m 20m x 20m x 20m
Precision (3m x 3m x 3m volume) < 1mm < 0.25mm
Accuracy (3m x 3m x 3m volume) < 0.5mm < 0.25cm
Horizontal Field of View 68deg (Std)
88deg (Wide)
70deg (Std)
98deg (Wide)
Update Rate 60Hz 180Hz
Image Processing central CPU withing camera
Maximum Cable Length 75m 200m
Camera Interface analog digital
Processing Interface RS-232, Ethernet Ethernet
Camera Size 160mm x 70mm x 60mm 45mm x 32mm x 92mm
Camera Weight 500g 145g

(*) Trade-off between maximum camera / target number. Ask for details.
(**) For a marker to be tracked, it must be visible by two or more cameras. Overall tracking space dimensions are determined by the camera range, camera layout, and background lighting

More Information

Brochures

WorldViz PPT BrochureWorldViz PPT Brochure

 

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Specifications and other information are subject to change without notice.