Healthcare

NP-100

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Gaze Tracking System

NP-100

Gaze Tracking System


Gazefinder : A Gaze Tracking System 1. Fast and accurate calibration

With gaze tracking systems that visualize gaze points on a screen, the calibration done for each subject determines the accuracy of results. For Gazefinder, original algorithms were developed from measuring and testing over 1,000 people, including infants. Accurate calibration is achieved quickly, in about 15 seconds.

2. A Portable, All-in-One System

We created a portable system by integrating an image-presenting monitor, an eye tracker, and a computing unit. Not only is the system easy to install, with no complicated connections, but the monitor and camera positions do not require correction. Once the system has been turned on, measurements can be taken quickly.

3. A Simple Operation Screen

To resolve the problem of users being deterred from applying gaze measurement systems to their research because they seem difficult to operate and time consuming to master, we made intuitive operation possible by adopting a simple and functional screen. In addition, new images can be added easily from USB sticks.

System Overview

The system computes gaze points on the monitor from the positional relationship between the pupil and the corneal reflection of light from the near infrared light emitting diode (LED).

Relevant Research Areas

Case of Application

Gaze point analysis of chest X-ray images
Images were provided by Professor Toshihiro Ogura of Gunma Prefectural College of Health Sciences and Graduate School.

 

Research objective:
Analyze the gaze tracing of experts and students and confirm tendencies.

 

Results:
Average reading time was shorter for experts than for students.
Average detection rates were significantly higher for experts than for students.

*Images shown are for illustrative purpose only.

    Technical Specifications
    Technical Specifications
    HC_GF_spec
    Sampling frequency
    50 Hz
    Accuracy
    <1°
    Recommended distance between monitor and eyes
    50-70 cm (19.7-27.6 inch)
    Freedom of head movement
    Height x width 14 x 22 cm ( 5.5 x 8.7 inch ) at 60cm ( 23.6 inch )
    Resolution
    1280 x 1024 pixels
    Monitor size
    19 inch
    Number of calibration points
    5
    Data output
    CSV file
    Input
    AC100-240 V 50/60 Hz
    Weight
    12.8 kg ( 28.2 lb )
    Dimensions ( W x H x D )
    416.3 x 443.5 x 260 mm (16.39 x 17.46 x 10.24 inch) excluding projections
    Input / Output
    DVI-D output
    Audio output ( Stereo mini ø 3.5 mm )
    Mic input ( Stereo mini ø 3.5 mm )
    Speaker
    1 W x 2
    Accessories
    Keyboard, Mouse
    Power cord, Instruction manual