Offset Correction on Pupil Cloud
For some subjects, you may find a constant offset in their gaze estimates. This gaze offset can be compensated for in the Invisible Companion app before starting a recording, or post hoc in Pupil Cloud as shown below. Click on the gaze offset icon to start the gaze offset correction.
Once you enter the Edit Gaze Offset view, simply drag the gaze circle to apply the correction. See the video below for reference.
- The grey circle indicates the raw gaze estimate provided by the gaze estimation pipeline of Pupil Invisible.
- The red circle indicates the gaze position with the current offset applied.
- The blue circle indicates the offset correction applied in the Invisible Companion app.
TIP
Modifying the gaze offset impacts all downstream data, such as fixations, mapped gaze from enrichments, and visualizations. Where possible, data is updated instantly. If not, the respective data will be deleted, requiring (partial) re-computation of enrichments or visualizations. In that case, the enrichment or visualization will be shown as Not Started and you need to re-run them.