Changes

==jsPsych example==

==jsPsych example==

The code is available here: [https://gitlab.socsci.ru.nl/tsg/webgazer_calibration_example]

The code is available here: [https://gitlab.socsci.ru.nl/tsg/webgazer_calibration_example]

The implementation is based on the demo example from the Brown HCI group (https://webgazer.cs.brown.edu/calibration.html?). In the demo example, there are a few dependencies as listed below that link to external servers. In this example, the corresponding utilised tools have been downloaded and added locally to the server. To stay up to date, these links may be restored to have future implementations benefit from new developments.<br>

The implementation is based on the demo example from the Brown HCI group (https://webgazer.cs.brown.edu/calibration.html?). In the demo example, there are a few dependencies as listed below that link to external servers. In this example, the corresponding utilised tools have been downloaded and added locally to our Titus server. To stay up to date, these links may be restored to have future implementations benefit from new developments.<br>

The experiment starts with a calibration and then runs a simple experiment where it is asked to look at the fixation cross in the middle of the screen and then focus as soon as possible on random red spheres popping up on the edges or corners of the screen. At the end. all the corresponding eye gazing tracings are shown in a graphic. Only eye gazing x,y-coordinates are saved as data to the server, no video data is stored. The calibration part and presentation of an image, (i.e. one trial) together with everything that is needed to get the eye tracking data saved is implemented as jsPsych plugins: webgazer-calibration-plugin.js and webgazer-trial-plugin.js. The jsPsych implementation of the experiment itself is put together in main.js.<br>

The experiment starts with a calibration and then runs a simple experiment where it is asked to look at the fixation cross in the middle of the screen and then focus as soon as possible on random red spheres popping up on the edges or corners of the screen. At the end. all the corresponding eye gazing tracings are shown in a graphic. Only eye gazing x,y-coordinates are saved as data to the server, no video data is stored. The calibration part and presentation of an image, (i.e. one trial) together with everything that is needed to get the eye tracking data saved is implemented as jsPsych plugins: webgazer-calibration-plugin.js and webgazer-trial-plugin.js. The jsPsych implementation of the experiment itself is put together in main.js.<br>

For server data storage, it uses the Radcloud Mini solution: https://www.socsci.ru.nl/wilberth/radcloud/index.html <br>

For server data storage, it uses the Radcloud Mini solution: https://www.socsci.ru.nl/wilberth/radcloud/index.html <br>