*Cite the following paper when referring to the JuDo1000 data set provided in this repository:*
*Makowski, Silvia, Jäger, Lena A., Prasse, Paul, Scheffer, Tobias, 2020. Biometric Identification and Presentation-Attack Detectionusing Micro- and Macro-Movements of the Eyes. 2020 IEEE International Joint Conference on Biometrics (IJCB).*
**Technical Setup**
Eye movements are recorded binocularly using an EyeLink Portable Duo video-based eye tracker with tripod mounted camera (SR-Research, Osgoode/ON,Canada) at a sampling frequency of 1000 Hz.
Participants are seated in front of a computer monitor (38×30 cm; 1280×1024 px) with a viewing distance of 68 cm, at a height adjustable table with their head stabilized by a chin- and forehead rest.
**Experimental Design**
Participants are recorded in four experimental sessions with an interval of at least one week between two sessions. Each of the four experimental sessions consists of 108 experimental trials, in which a black dot with a diameter of 0.59 cm (20 px) appears consecutively at 5 random positions on a white background.
An experimental trial is drawn from one of nine trial configurations: The duration for which each dot is displayed varies between 250, 500 and 1000 ms with a fixed value within each trial. The size of the screen area in which the dot appears varies between 7.6×14.0 cm, 11.4×17.0 cm, and 19.0×23.0 cm around the center of the monitor with a fixed area within each trial. An experimental session consists of 12 repetitions of each configuration, with random dot positions.
**Participants**
We record 150 participants, aged 18-46 years, with mean age of 24 years.
**Data Record**
For each subject and experimental session we provide a file
`[subjectID]_[sessionID].csv` containing raw eye tracking data (horizontal and vertical screen coordinates of the gaze of left and right eye, sampled at 1000 Hz) and a corresponding file `[subjectID]_[sessionID]_TrialVars.csv` containing information about the experimental configuration of each trial:
- `[subjectID]_[sessionID].csv`
column | type | description
------ | --------- |------
trialId | int | Identifier of experimental trial. Reflects chronological order of presentation in session.
time | int | Timestamp in ms.
pointId | int | N-th appearance of dot, in range 1-5.
x_left | float | Horizontal screen coordinate of gaze of left eye in pixel.
y_left | float | Vertical screen coordinate of gaze of left eye in pixel.
x_right | float | Horizontal screen coordinate of gaze of right eye in pixel.
y_right | float | Vertical screen coordinate of gaze of right eye in pixel.
- `[subjectID]_[sessionID]_TrialVars.csv`
| column | type | description
| ------ | ---- |------
|trialId | int | Identifier of experimental trial. Reflects chronological order of presentation in session.
|seqId | int | Identifier of the sequence of dot appearance positions used in this trial.
|grid | float | Size of dot display area, one of {0.25, 0.35 , 0.4}. 0.25 refers to size 19.0×23.0 cm; 0.35 refers to size 11.4×17.0 cm; 0.4 refers size 7.6×14.0 cm.
|dur | int | Display duration in ms of each dot appearance in this trial, one of {250, 500, 1000}.
|locP[1-5] | tuple of two floats | (horizonzal, vertical) screen coordinates of dot appearance 1-5 in pixel.
The origin (0,0) of screen coordinates is the upper left corner of the screen.
