Tobii Ab

Hanwei Wu

Rickard Lundahl

Jonas Sjöstrand

Shanker Keshavdas

Daniel Tornéus

Johanna Frost

An eye tracking system comprising a processor configured to: receive a plurality of images of an eye from a camera, each image comprising an illuminated sub-region of a cornea of the eye, the illuminated sub-region comprising: a first corneal reflection of a first light source from a surface of the illuminated sub-region; and a second corneal reflection of a second light source from the surface of the illuminated sub-region; for each image, determine a three-dimensional, 3D, position of the first corneal reflection and a 3D position of the second corneal reflection based on a position of the camera, a position of the first light source, a position of the second light source, positions of the first and second corneal reflections in the image and a corneal surface model for the illuminated sub region; and output a topographical profile of the cornea based on the 3D positions determined for each image.

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STOCKHOLM, Sweden

Hanwei Wu