Workflow¶

SharpEyes's workflow is divided into five tabs, each corresponding to a stage of processing.

The pupil finding and calibration pages are for when you have a raw video from the eyetracking camera and need to extract gaze information. In our case, we have an Avotec system that can put out the video.

If you already have gaze information (i.e. stimulu XY locations for them), you can skip to Stimulus & Gaze.

The tabs are conveniently set up in order of the workflow: greenarrow are the flow, and blue are entry points!

Pupil Finding takes a raw eyetracking video and finds the pupil location in each frame. This is the first step for any eyetracking data.

Calibration maps from pupil video space to stimulus display space, producing gaze positions that can be overlaid on the stimulus.

Stimulus & Gaze lets you view the gaze location overlaid on the stimulus video, filter the gaze traces to smooth them, and manually edit individual gaze positions when needed.

Recentering uses the gaze location to shift and crop the stimulus video so that the gaze is always centered, producing a retinotopic video.

Motion-Energy computes motion-energy features from either the recentered videos or from the raw stimulus video, using PyMoten under the hood.

Each tab page includes a full controls reference. Hotkeys and menu items for pupil finding are documented on the Pupil Finding page. Common questions are in the FAQs.