FIDUCIAL MARKER BASED FIELD CALIBRATION OF AN EYE-TRACKING DEVICE

A computer-implemented method of field calibrating a device is disclosed. In one example, a reference image is acquired, via an infrared camera, while the device is in a factory-calibrated state. The reference image measures a factory-calibrated spatial relationship of one or more infrared-visible f...

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Bibliographic Details
Main Authors DOS SANTOS MENDONCA, Paulo Ricardo, MEI, Christopher Maurice, DEMASTER-SMITH, Rayna, AHOLT, Christopher Charles
Format Patent
LanguageEnglish
French
German
Published 17.01.2024
Subjects
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PHYSICS
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Summary:A computer-implemented method of field calibrating a device is disclosed. In one example, a reference image is acquired, via an infrared camera, while the device is in a factory-calibrated state. The reference image measures a factory-calibrated spatial relationship of one or more infrared-visible fiducial markers of the device relative to the infrared camera while the device is in the factory-calibrated state. Later, a field image is acquired, via the infrared camera. The field image measures an updated spatial relationship of the one or more infrared-visible fiducial markers relative to the infrared camera. The device is field calibrated based on the reference image and the field image.
Bibliography:Application Number: EP20220709500