Tobii Glasses Manual de usuario

Tobii®Technology

Tobii Glasses

Eye Tracker

User

Manual

www.tobii.com

User

Manual

On Safety

All Tobii Eye Trackers are CE-marked, indicating conformity with the

essential health and safety requirements set out in European Directives.

Declaration of Conformity

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to section

15 of the FCC Rules and EMC directive 2004/108/EG. The product also conforms with directive 2006/95/EC for

low voltage and environmental directive RoHS 2002/95/EC.

These limits are designed to provide reasonable protection against harmful interference in a residential installation.

This equipment generates, uses and can radiate radio frequency energy, and if not installed and used in accordance

with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that

interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or

television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to

correct the interference by one or more of the following measures:

• Re-orient or relocate the receiving antenna.

• Increase the separation between the equipment and receiver.

• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

• Consult the dealer or an experienced radio/TV technician for help.

Read this manual carefully before connecting and using the eye tracker

The Tobii Glasses Eye Tracker is designed only for indoor use. Avoid any exposure to direct sunlight as this will affect

eye tracking quality.

Do not open the eye tracker

Non-compliance will result in loss of Warranty. There are no user serviceable components inside and the risk of

electric shock is high due to the presence of Dangerous High Voltages. Contact Tobii Support if your eye tracker is

not working properly.

Tobii Glasses Eye Tracker

This document contains information proprietary to Tobii Technology AB . The contents are conﬁdential and any disclosure to

persons other than ofﬁcers, employees, agents, or subcontractors of the owner or licensee of this document, without the prior

written consent of Tobii Technology AB, is strictly prohibited. No part of this publication may be reproduced, stored in retrieval

systems, or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording, without

the prior consent of the copyright holder.

Document revision - December 2012

Tobii Technology AB reserves the right to change the content of this manual without prior notice. Changes due to

typographical errors, inaccuracies, or modiﬁcations in programs and/or equipment ma be implemented at any time. Please

check the Tobii web site www.tobii.com for updated versions of this document.

Tobii Glasses Eye Tracker

Tobii®Technology

User Manual

User

Manual

1 Product Care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2 Tobii Glasses at a Glance ......................................................................6

• Package Contents........................................................................................6

• Glasses ..................................................................................................7

• Recording Assistant ......................................................................................7

• Tobii Glasses introduction.................................................................................8

• IR Markers ...............................................................................................8

3 How to Use this User Manual ..................................................................9

4 Preparation..................................................................................10

• Glasses .................................................................................................10

• Recording Assistant .....................................................................................12

• IR Markers ..............................................................................................17

• First Time Use...........................................................................................19

• Firmware................................................................................................19

5 Recording with Tobii Glasses..................................................................22

• Checking the Status .....................................................................................22

• Sessions ................................................................................................23

• Recording...............................................................................................24

• Calibrating ..............................................................................................25

6 Pilot Study ..................................................................................29

7 Tobii Glasses Workﬂow .......................................................................31

• Tobii Glasses Checklist ..................................................................................31

• Importing Recordings ....................................................................................32

• Replaying Recordings ...................................................................................35

• Glasses Data Viewer.....................................................................................37

• Parallax Correction Tool..................................................................................38

• Manual Coding ..........................................................................................40

8 Tobii Glasses Smart IR Workﬂow ..............................................................44

• Tobii Glasses Smart IR Checklist .........................................................................44

• Area of Analysis (AOA) ..................................................................................45

• Using IR Markers........................................................................................46

• Snapshots ..............................................................................................50

• Importing Recordings ....................................................................................51

• Replaying Recordings ...................................................................................54

• Glasses Data Viewer.....................................................................................56

• Parallax Correction Tool..................................................................................57

• Manual Coding ..........................................................................................59

• Visualizations, AOI’s, and Statistics from Snapshots .......................................................62

• Snapshot IR Marker Coverage ...........................................................................64

Appendix I: Technical Speciﬁcations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .66

Appendix II: Parallax Explained...................................................................69

Table of Contents

Tobii Glasses Eye Tracker

1 Product Care

Temperature and humidity

Do not place the eye tracker or IR Markers in places subject to extreme temperatures and humidity, such as on top

and or near a heating element, or in a damp room.

Storage temperature: -10°C to +60°C / 15°F to 140°F

Usage temperature: 0°C to +35°C / 32°F to 95°F

Ingress protection

IP class 20. No protection against objects smaller than 5mm.

Keep the eye tracker in a clean and dust-free environment. When using the equipment temporarily in an outdoor

location, take adequate precautions against dust and dirt.

Do not use the eye tracker near water. The eye tracker is not water resistant.

Mechanical shock

Do not drop, knock, or shake the device, in order to avoid breaking or damaging the internal electronic circuits. Eye

tracking quality or accuracy can be seriously affected if the Tobii Glasses or Recording Assistant have been dropped.

If the eye tracker is exposed to mechanical shock, for example, when dropped, do not try to connect it to a power

source.

Contact Tobii Support for instructions (contact information can be found on the back of this manual).

Power

It is recommended that you connect the power cable of the chargers to an outlet with a protective earth/ground

connection.

Use an accessible outlet and make sure that the cables are properly placed to avoid a possible trip hazard.

Transportation

Always use the supplied casing and packaging material to transport the eye tracking equipment and provide added

protection.

Cleaning

Before cleaning any part of the Tobii Glasses eye tracking equipment, unplug the power cord from the outlet and

make sure the device is turned off. Both Tobii Glasses and the Recording Assistant have surface coatings that

require special care. Only use the supplied micro-ﬁber cleaning cloth or similar products specially intended for

cleaning screens or glass with a special coating. Avoid touching or scratching the glass of the Tobii Glasses and

keep the surface clean. If the coating is affected or damaged, eye tracking quality may be degraded. Rubber parts

such as the temple arms and the nosepiece can be cleaned with water or disinfectant applied on a piece of soft

cloth. Avoid contact with any other parts such as the glass or illuminators.

Accessories

Use only provided or approved Tobii Glasses accessories.

Disposal of the eye tracker

Do not dispose of the eye tracker in general household or ofﬁce waste. Follow your local regulations for disposal of

electrical and electronic equipment.

Sunlight

Do not expose the eye tracker to direct sunlight. Sunlight affects eye tracking performance severely and can

overheat the eye tracker with longer exposure. The eye tracker is not designed for outdoor use or exposure to

(direct) sunlight. Eye tracking generally does not work in direct sunlight. Shielding the eye tracker adequately from

the sun may prevent sunlight from interfering with the eye tracking.

Liquids

Do not use the eye tracker near water. The eye tracker is not water resistant.

Avoid dripping liquids into any openings of the Tobii Glasses eye tracking equipment.

User

Manual

Package Contents

E G

IJK

Y & Z

T U V

Y & Z

2 Tobii Glasses at a Glance

IR Marker Case

T. AC power cable

U. Power cable splitter

V. Mounting tape

W. IR Marker Holders (3x10)

X. AC adapter (powers IR Marker chargers)

Y. IR Markers (3x10)

Z. IR Marker chargers (3x)

• IR Marker charger

• AC adapter

• AC power cable (grounded)

Tobii Glasses Case

A. Glasses (including removable nosepiece)

B. IR Markers - for calibration (2x)

C. Memory cards - 4GB (3x)

D. Memory card reader

E. Battery charger power cables (2x)

F. Glasses head strap

G. Additional power outlet adapters (2x)

H. Recording Assistant extra batteries (3x)

I. Recording Assistant (with 1 battery inside)

J. Micro-ﬁber cloth

K. Battery chargers (2x)

L. AC adapter (powers Recording Assistant)

M. Wall socket adapter (for AC adapter)

N. Extra storage space

Inside the case pocket:

• Tobii Glasses User Manual

• Tobii Glasses Field Guide or Tobii Glasses

Smart IR Field Guide

Also included in Smart IR Package

Also included in Base Package

Included in Base Package and Smart IR Package

Tobii Glasses Eye Tracker

Headband

attachment

ON/OFF button

NEW session button

REC/



button

CALIBRATE button

Scroll bar

Left selection key

Right selection key

Front display & controls

Top connections

Glasses port Memory card slot

Clip

Recording Assistant

Eye tracking sensor

IR reﬂective

glass

Scene camera

Microphone

Function buttons

IR Marker

sensor

Illuminators

Bottom connections

AC Adapter connector

Belt Unit 091110

Graphic overlay gradient

Illuminators

Glasses

Rubber temple arm

View of front

View of right side

User

Manual

IR Marker Holder

IR Marker front

LED indicator

IR Marker

IR Marker Connection points

IR Marker ID

Placing the IR Marker in the IR Marker Holder.

The IR Markers are small devices that, when connected to a IR Marker Holder, communicate their exact location

to Tobii Glasses using infrared light. Each IR Marker Holder has a unique ID number. Tobii can supply up to 120

unique IDs for the IR Marker Holders. When the IR Markers are connected to an IR Marker Holder they are used to

deﬁne different areas on a scene that can later be used for analysis called Areas Of Analysis (AOA). The glasses

will receive and transmit the exact locations and position of these AOAs to the Recording Assistant. The collected

IR Marker location information is used by the Tobii Studio analysis software to map the gaze data of multiple

participants on a single picture of the AOA.

A single IR Marker, without an IR Marker Holder, is used during the calibration procedure as a ﬂexible manually

moved calibration point.

IR Marker connection points

Removing the IR Marker from the IR Marker Holder.

IR Markers (InfraRed Markers)

Tobii Glasses introduction

The Tobii Glasses is a mobile eye tracking system with the option to use IR Markers to deﬁne so called Areas Of

Analysis (AOA´s) for automated data aggregation. AOA´s make it possible to obtain visualizations and statistics

from the collected eye tracking data. The Recording Assistant records the eye tracking data from the glasses

together with the video of the scene camera, sound from the build-in microphone and IR Marker position information

(captured by the integrated IR Marker sensor) to a memory card. The collected eye movement data can be overlaid

and aggregated for multiple participants using the Tobii Studio analysis software by deﬁning a picture or “Snapshot”

of the AOA. Using the captured IR Marker position information the eye tracking data for multiple participants can be

mapped on this single Snapshot.

Tobii Glasses Eye Tracker

Tobii Glasses Smart IR Workﬂow

Tobii Glasses Workﬂow

Workﬂows (Pages 31-43 Pages 44-65)

This manual contains two workﬂows. At the start of each workﬂow is a checklist of the entire workﬂow from setup

to analysis. Make sure you have read the Preparation chapter and the Recording with Tobii Glasses chapter before

proceeding to a speciﬁc Workﬂow.

The ﬁrst workﬂow - Tobii Glasses Workﬂow - Includes all information needed to conduct a study using the Tobii

Glasses without using IR Markers. This workﬂow also includes information on how to manually code recordings to

obtain statistics from the eye tracking data without the use of IR Markers.

The second workﬂow - Tobii Glasses Smart IR Workﬂow - Explains how to conduct a study using IR Markers and

how to conduct the analysis and create visualizations using Tobii Studio.

3 How to Use this User Manual

Tobii Glasses

Workﬂow (Pages 31-43)

Using Tobii Glasses without IR Markers

including Analysis with Tobii Studio

Belt Unit 091110

Graphic overlay gradient

Belt Unit 091110

Graphic overlay gradient

Belt Unit 091110

Graphic overlay gradient

Belt Unit 091110

Graphic overlay gradient

AOA

Recording with Tobii Glasses (Pages 22-26)

This chapter explains the basic operations required when making a recording and performing a calibration.

Tobii Glasses Smart IR

Workﬂow (Pages 44-65)

Using Tobii Glasses with IR Markers

including Analysis with Tobii Studio

This user manual is set up to accommodate all users of Tobii Glasses, including both users with and without the

Smart IR Markers. Both types of users should read the Preparation chapter and the Recording with Tobii Glasses

chapter. Once done with those, each type of user should follow the appropriate workﬂow. Users without IR Markers

should follow the Tobii Glasses Workﬂow and users with IR Markers should follow the Tobii Glasses Smart IR

Workﬂow. The workﬂows are differentiated by the orange tab on the right hand side of the page.

Preparation (Pages 10-21)

Start by making yourself familiar with the preparation procedures. The Preparation chapter will guide you through the

different components, features, and functions needed to use the Tobii Glasses correctly.

Visualizations and Statistics can generally not be generated in Tobii Studio when using the glasses without IR

Markers (unless the glasses are in a ﬁxed position for all participants, which would allow the use of Scenes).

Pilot Study (Page 29)

This chapter explains the steps needed to conduct a successful Pilot Study.

User

Manual

Wearing the glasses

Put the glasses on like you would normal glasses. As the glasses do not have hinges, if necessary, carefully bend

the black rubber temple arms to put the glasses on. Avoid touching the glass and the sensors. As the glasses should

not move around on the head, tighten the strap to a secure but comfortable ﬁt. The glasses should not be removed

during a participant’s recording and before the calibration has been conducted.

The eye of the participant is tracked best when positioned in the center of the frame and ideally 2.75cm (1.1 inches)

away from the glass, but are very tolerable of other distances and positions. If necessary, adjust the headband and

the nose pad. Squeeze or pull apart the wings of the nose pad to position the glasses higher or lower on the nose

of the participant. Do not let hair get in between the eye and the glass, or in the way of the eye tracking sensors or

camera.

4 Preparation

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