PST IRIS HD

The PST Iris HD is the premium version of the PST Iris optical tracker It is equipped with 2 HD cameras that provide an even wider measurement volume and high precision 6 DoF tracking. The resolution and the refresh rate of the PST Iris HD can be adjusted to enable highly accurate tracking in almost any setup.

Overview

When do I need the PST Base HD?

The PST Iris HD is the ideal solution when a user needs to track a wide area with high accuracy. These are the main differences between the PST Iris and the PST Iris HD:

	PST Base	PST Base HD
Latency¹	15-25 ms	15-25 ms
Refresh rate	120Hz (Adjustable)	200Hz (Adjustable)
Accuracy	Position: < 0.5 mm RMSE Orientation: < 1 deg RMSE	Position: < 0.5 mm RMSE Orientation: < 1 deg RMSE
Tracking distance	0.5m. - 5m.	0.5m. - 5m.
Intended use	Large volume	Large volume
Client operating system	Windows (7,8,10) and Linux²	Windows (7,8,10) and Linux
Power consumption	Max 12 W	Max 10 W
Connection to a PC via	1 USB 2.0 port	2 USB 3.0 ports
Weight	Approx. 1.2 kg	Approx. 1.2 kg
Size (WxHxD)	50.5x6x9.5 cm.	50.5x6x9.5 cm.

¹Depending on the shutter time and the filter settings.

²The PST Cortex allows working with the PST Iris and a Linux operating system.

Field of view comparison

PST Base

PST Iris FOV with 3.5 mm. lenses

PST Iris FOV with 4.5 mm. lensesPST Iris FOV with 5.5 mm. lenses

PST Base HD

PST Iris HD FOV with 3.5 mm. lensesPST Iris HD FOV with 4.5 mm. lenses PST Iris HD FOV with 8.5 mm. lenses

Creating new tracking targets is an easy process with the PST Iris HD. Any object, regardless of its shape, can be made into a tracking target in few seconds.

The PS-Tech software PSTracking 4.0 is the control center for all the PST trackers. PS-Tech provides an easy-to-use SDK to make the tracker measurements easy to integrate into your solution.

PS-Tech develops custom solutions for users with special requirements. Contact us with your inquiries and we will get back to you as soon as possible.

Technical Specifications

Specifications summary optical tracker PST Base HD¹

Tracking up to 7 meters
Fanless and noiseless
Calibration-free bar-tracker
Adjustable infrared flash
Synchronize with external systems
Adjustable frame rate up to 200 Hz
Latency: 15-25 ms

Performance

Accuracy	Position: < 0.5 mm RMSE Orientation: < 1 deg RMSE²
Latency	15-25 ms (depending on the shutter time and the filter settings)
Refresh rate	Up to 200 Hz
Minimal tracking distance	50 cm - 7 m (tracking cone)
Intended use	Recommended for tracking front of screens > than 55", powerwalls, tracking areas > 1.5 m

Usability

Set up	Plug and play
Calibration	Pre-calibrated unit
Origin definition	One click process – dedicated tool included
Units needed for 6 DoF tracking	One, each PST base is a full 6DoF motion tracker
Expandable tracking area	Expandable, multiple trackers can be connected to expand the tracking area
Aligning units	Easy routine in seconds
Ambient Conditions	Normal indoor lighting conditions
Illumination	Integrated IR LED illumination (wavelenght 850nm). Flash illumination fully adjustable in PSTracking 4.0
Operating Temperature	15 - 35 deg. C

Devices and Markers

Number of targets	At least 15 independent 6DOF bodies For instance: simultaneous head and object tracking
Markers	Passive (retro-reflective stickers and spherical) Active (LED)
Device creation	Simple procedure: mark device, train new device in seconds and use it

Interfaces

Processing	An adiditional processing unit is in most cases not needed. A PST Cortex (power booster unit) is recommended for a multi PST setup or networked access.
Tracking Application	PSTracking 4.0 (license included with each PST tracker)
Client operating system	Windows (Windows 7, Windows 8, Windows 10), 32 and 64 bit and Linux. Via the PST Cortex also to other operating systems.
Software interface	VRPN, trackd³, Dtrack emulation, data export to .CSV and the tracker comes with an easy to use SDK with bindings for C# and Python
Hardware interface	USB 2.0 - However, PST Base results can also be shared fully transparently over Ethernet. Install the PSTracking 4.0 software on a second computer and connect.
Output	Positional coordinates(x, y, z), orientation angles, Euclidean transformation matrix
Synchronization	Hardware trigger in and out

Hardware

Weight	Approx. 1.2 kg
Size	50.5 x 6 x 9.5 cm (W x H x D)
Mounting	1/4”-20 UNC tripod mounting point
Power supply	Output 9V, 40W. Input 100-240V, 50-60Hz
Power consumptio	n Max. 12 W

Preliminary Specifications, subject to change without notice.
Precision measured using a grid of 7mm markers moved through the workspace up to a distance of 2.5m w.r.t. the tracking system.
trackd is a trademark of Mechdyne, Marshalltown, IA, USA.

Measurement Area Configurations

The field of view is the volume within which markers can be tracked. The PST IrisHD can work with three different lense sizes: 3.5mm, 4.5mm and 8.5mm. The decision depends on the specific requirements of the use case. The images below show the field of view of the PST Iris HD for each case.

PS-Tech Iris HD FoV 3,5mm PS-Tech Iris HD FoV 4,5mm
PS-Tech Iris HD FoV 8,5mm