GAZEPOINT CONTROL USER MANUAL
Contents
1. Soft contact lenses that are too dirty can reduce the specular reflections used to track eye movement Use only clean contact lenses Glasses that are dirty or scratched can cause difficulty in tracking as well as some shiny metal frames Glasses work best when the angle from the GP3 unit to the face is relatively steep i e move your head higher and closer to the monitor and tilt the unit up Some makeup such as glitter can lead to spurious reflections Avoid such makeup The calibration isn t working Ensure that you complete the calibration without blinking Also make sure that you stay focused on the dot position Some people anticipate where the dot will move and this throws off the calibration Revised January 19 2014 Copyright c 2014 10 Page2. Accuracy 0 5 1 degree of visual angle e 60Hz update rate e 5 and 9 point calibration e Easy to use and open standard API e 25cm x 11cm horizontal x vertical movement e 15 cm range of depth movement e Powered by USB e Processor Modern processor i5 to i7 recommended e Memory 2 GB e OS Window XP Vista 7 8 32 64 bit Revised January 19 2014 Copyright c 2014 2 Page aze oint Gazepoint Control User Manual Rev 2 0 3 Hardware Setup 3 1 GP3 Unboxing The Gazepoint GP3 eye tracking system ships with the following components e GP3 eye tracker e Miini tripod e USB power cable e USB data cable To keep our price low we do not ship the software in the package simply download the latest version from the Gazepoint website here http gazept com downloads A password is required to download the software and will be sent to you at the time of purchase Figure 1 Gazepoint GP3 Un tubing 3 2 GP3 Connections Before connecting the eye tracker to your computer you should first install the Gazepoint software which will install the camera driver Then to set up the hardware simply screw the tripod to the GP3 with the thumbscrew connect the USB DC power cable to one of your computers USB ports and connect the USB data cable to another port the camera driver will then automatically connect Note that the data cable must be connected directly to the USB port on your computer not through a USB hub The eye tracker uses
3. tracker e Calibrate Start the calibration process e Gaze pointer Move mouse cursor wherever you look block the sensor to get back control e Select Screen For multi monitor systems selects the active screen e Switch Tracker We have new eye trackers in development stay tuned for more information Feedback information is provided through the bottom status bar e Frame time Should be 16 6ms 60Hz If number is larger you may need more CPU power e Server Indicates how many clients are connected and if data is being transmit K SL nl Calibrate Gaze Pointer Select Screen Switch Tracker Type Frame Time 16 42 ms Server 1 clients TX Figure 4 Gazepoint Control Software Revised January 19 2014 Copyright c 2014 5 Page aze ent Gazepoint Control User Manual Rev 2 0 Y A j a L fr i 14 LI L TAT 7 T QVNTAKRHN NT I VATYNH A Mara Finn VANALINN SM NAT lra7 ADOINT LOI ILI 0 Ld INFADOI I VVIMAO W A ALL WU AULI CI UI KOll MITI ALIUIITL VV ALLVCIV VV N ma a Rh X When the calibration process begins the screen will go blank and a calibration marker will move through five positions on the screen Simply look at the marker at each of the calibration positions The resulting calibration should look similar to that shown in the image below After calibration a white point of gaze dot will be drawn on the screen and you can check your accuracy by looking at each of the calibration points again If fo
4. GAZEPOINT CONTROL USER MANUAL aze ent Gazepoint Control User Manual Rev 2 0 Contents NA as A A 2 bapssebseeteansanebes 2 2 Technical Specification and Requirements iia ias 2 2 1 GPS Desktop Eve Trace ds 2 S ROA rO Ware Seto said 3 3 1 e UNDONE i 3 3 2 GP 3 GOA AS i ns a an i ironia 3 3 3 de m m a a 0 4 A ORNE a ii A a A A 5 4 1 Gazepoint Tracker Main WINGOW sescccccssecccceseccccesececseeccceeuecceseesecessusecesseuecessuseeetsuaecesseges 5 4 2 Gazepoint Control Calibration WiINdOW ccccccsssccccesececcesecccceecceceesececeeeeceseeaeccessueeessugeceesenes 6 5 Demo Programs and Source Code ccccesccccssceceescecesscecenececenecceenceceenceceececeneceeeneesauaceseuecessecesseeeeees 7 5 1 GP CHIC IG CASS miim o nn aas sama REO aia ar E T aa 7 5 2 CERCA 7 5 3 CTemplate Template MOTO MMA M A 2 E EEES 8 5 4 A o GEO nn oo s rae 8 5 5 MA Diarias 8 5 6 Olai dl lt lt 8 OCIS SOS TIOS AM ooo 9 6 1 Ei P P o case tt sssneetaueenenamedacaneesans acu 9 6 2 Why in Pn GPS Working aaa aan 10 Revised January 19 2014 Copyright c 2014 1 Page aze ent Gazepoint Control User Manual Rev 2 0 1 Introduction The Gazepoint Control system is a high performance eye tracker software platform that provides gaze data at an extremely affordable price The hardware and software setup are also extremely straightforward and easy to do 2 Technical Specification and Requirements 2 1 GP3 Desktop Eye Tracker e
5. almost 100 of the data bus so while it can share with a keyboard or mouse if you also connect an external hardware or webcam to the same bus you may impact the eye tracker image transmission Often the USB ports on the front and back of a PC or the left and right of a Revised January 19 2014 Copyright c 2014 3 Page aze ent Gazepoint Control User Manual Rev 2 0 laptop use two separate USB hubs internally in the computer The USB power cable can connect to any powered USB port including a USB hub provided the hub is powered Figure 2 Gazepoint GP3 Hardware Setup 3 3 GP3 Placement Position GP3 directly below your computer screen Avoid use in a room with direct or indirect sunlight on the face of the user Position the GP3 approximately arm s length distance away and centered and pointed at your face ideal distance is 65 cm to your eyes If you wear glasses it is best to tilt the unit upwards at a greater angle to prevent reflections from appearing off the glasses lenses Figure 3 Gazepoint GP3 Placement Revised January 19 2014 Copyright c 2014 4 Page aze ent Gazepoint Control User Manual Rev 2 0 4 Software Setup The Gazepoint Control software performs the image processing and gaze estimation methods The software also operates the gaze data server which provides data to third party programs through the Open Gaze API 4 1 Gazepoint Tracker Main Window There are only four buttons to control the Gazepoint eye
6. d class which simplifies all tasks needed to use the API This class is used for all Gazepoint software projects which communication using the API 5 2 C apiclient The apiclient uses the GPClient Class and enumerates the API commands so you can send them one at a time This program is great for watching what commands look like as you send them back and forth with the server connect disconnect setup tx data query vars exit s et or g et CALIBRATE_START CALIBRATE_SHOW CALIBRATE_TIMEOUT CALIBRATE_DELAY CALIBRATE_FAST CALIBRATE_RESULT_SUMMARY TRACKER_DISPLAY TIME_TICK_FREQUENCY SCREEN_SIZE 9 CAMERA_SIZE 10 PRODUCT_ID 11 SERIAL_1D 12 COMPANY_ID Input 8 lt GET ID SCREEN_SIZE gt lt ACK ID SCREEN SIZE X 0 Y 0 WIDTH 1920 HEIGHT 1080 gt 0 1 2 3 4 5 6 T 8 Revised January 19 2014 Copyright c 2014 7 Page aze oint Gazepoint Control User Manual Rev 2 0 5 3 C Template Template_nomfc The template and template_nomfc projects are very simple projects which connect to the server start sending data and print the result to the screen These are great starting points for developing your own C applications 5 4 C FruitNinja A larger project which uses the API to collect gaze data and then manipulate the cursor to create different blades for use in the Fruit Ninja video game available in the Windows 8 App Store Operation 1 run Gazepoint Eye tracker 2 run EyeBlades 3 b
7. lers gt Keyboards gt 7 Mice and other pointing devices gt KK Monitors gt EF Network adapters gt EE Point Grey Bus Host Controllers 4 Point Grey Research Devices gt pm Print queues gt om Printers gt Processors gt E Sensors gt 3 Software devices gt Sy Sound video and game controllers gt gt Storage controllers gt Mk System devices gt a Universal Serial Bus controllers Revised January 19 2014 Copyright c 2014 9 Page aze ent Gazepoint Control User Manual Rev 2 0 6 2 Why isn t my GP3 Working Dim red lights not visible behind the black plastic on the front of the eye tracker Check that power is supplied via the second USB cable ensure that Gazepoint Control is running kill any extra Gazepoint Control processes The camera window has a strange split image This is a known bug that occurs infrequently with the Firefly camera on the first start up of the PC or installation of a new version Simply restart the Gazepoint Control software to solve this issue The camera shows my eyes properly but the GP3 doesn t lock onto my eyes A number of artefacts can throw off the GP3 s eye tracking algorithm Sunlight has a lot of infrared content that can easily wash out the infrared LED sources try to work in environments with halogen or fluorescent lighting Dark environments work well too Hard contact lenses can shift after a blink which can cause difficulty in tracking
8. lock eye tracker with hand click Standard Blade 4 run Fruit Ninja Win8 app store 4 unblock eye tracker slash fruit with eyes Standard Blade Cyclone Blade Server Disconnect 5 5 Matlab Sample source code showing the API use in a Matlab programming language 5 6 Other Languages Since the API is only a TCP IP port any language can communicate with the server Please contact us if you would like to see some sample code for a language not listed here Revised January 19 2014 Copyright c 2014 8 Page aze oint Gazepoint Control User Manual Rev 2 0 6 Troubleshooting Tips 6 1 Camera Driver If the eye tracker is plugged in before the software is installed sometimes the camera can get labelled as an Unknown Device in the Windows Device Manager If you think this is the case though the device manager and look for the unknown device right click and select update driver then point to the folder Win7 or Win8 For 32bit C Program Files Gazepoint Gazepoint driver Win8 For 64bit C Program Files x86 Gazepoint Gazepoint driver64 Win8 When the camera driver is installed successfully it should be listed as a Point Grey Research device as shown in the figure below r Kui i Eile Action View Help e m E m E 4 nova gt Audio inputs and outputs gt Mk Computer gt Disk drives gt EE Display adapters gt ES DVD CD ROM drives gt ta Human Interface Devices gt Cg IDE ATA ATAPI control
9. r some reason your results are not satisfactory a second calibration will sometimes help as first time users may not have understood the process the first time You can redo a single point by simply clicking on the point with the mouse If the previous calibration was better than the current calibration simply press U to undo the current calibration and reload the last one U again toggles between the latest calibration and the previous calibration In some circumstances a little more accuracy may be desired traded off with a slightly longer calibration Simply press 9 to start using the nine point calibration process Figure 5 Gazepoint Control 5 Point Calibration Results Revised January 19 2014 Copyright c 2014 6 Page aze oint Gazepoint Control User Manual Rev 2 0 5 Demo Programs and Source Code A number of example demo programs and source code are provided to get you started quickly using the Open Gaze API These files can be found in the Gazepoint software installation folder For 32bit OS C Program Files Gazepoint Gazepoint demo For 64 bit OS C Program Files x86 Gazepoint Gazepoint demo If you wish to compile these programs it is best to copy the demo folder to another location such as the desktop or c temp as your operating system will prevent you from creating compile files in the Program Files folder 5 1 GPClient Class The GPClient class in the Demo lnclude folder is an MFC base
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