Eye-gaze tracking
First Claim
1. A method of tracking eye-gaze, the method comprisingemitting light having a certain wavelength;
- transferring the light to the retina of an eye;
the certain wavelength of the light being such as to make the fovea of the eye clear, prominent, and resolvable;
detecting light that is reflected from said eye to form detection information including the clear, prominent, and resolvable fovea;
mapping the detection information to a predetermined surface, said predetermined surface being located at a distance from said eye, the location of the clear, prominent, and resolvable fovea on said predetermined surface forming an eye-gaze point.
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Accused Products
Abstract
A device and a method for tracking an eye-gaze of an observer. A deep blue or violet light source is used to emit light to eye, particularly to the retina. The deep blue light is partially reflected and partially absorbed by the retina. The absorption is most prominent around the fovea, the area of sharp vision, because of the pigment which protects the fovea from short wavelength radiation. Thus the device and method of tracking eye-gaze according to the invention comprises emitting light having a certain wavelength and transferring the light to the retina of an eye. The wavelength of the light being such as to make the fovea of the eye resolvable. The method further comprises detecting light that is reflected from the eye to form detection information including the resolvable fovea, and mapping the detection information to a predetermined surface, the surface being located at a distance from the eye, the location of the fovea on the surface forming an eye-gaze point.
53 Citations
23 Claims
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1. A method of tracking eye-gaze, the method comprising
emitting light having a certain wavelength; -
transferring the light to the retina of an eye;
the certain wavelength of the light being such as to make the fovea of the eye clear, prominent, and resolvable;
detecting light that is reflected from said eye to form detection information including the clear, prominent, and resolvable fovea;
mapping the detection information to a predetermined surface, said predetermined surface being located at a distance from said eye, the location of the clear, prominent, and resolvable fovea on said predetermined surface forming an eye-gaze point. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
calculating a blood vessels pattern from said detection information; comparing said blood vessels pattern to a predetermined pattern;
setting the location of the clear, prominent, and resolvable fovea on said predetermined surface based on said comparing step.
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10. The method of claim 1, further comprising a step of displaying a mark on said predetermined surface at the eye-gaze point.
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11. The method of claim 1, further comprising a step of performing a control function relating to the particular point of eye-gaze on the predetermined surface.
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12. An eye-gaze tracking device, comprising:
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a light source for emitting light having a certain wavelength;
means for transferring the light to the retina of an eye, the certain wavelength of the light being such as to make the fovea of the eye clear, prominent, and resolvable;
a detector for detecting light that is reflected from said eye to form detection information including the clear, prominent, and resolvable fovea;
a surface located at a distance from said eye; and
means for mapping the detection information to the surface for locating the clear, prominent, and resolvable fovea on said surface for forming an eye-gaze point by the location of the clear prominent, and resolvable fovea. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A mobile phone having an eye-gaze tracking device, comprising:
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a light source for emitting light falling within a certain wavelength range;
means for transferring the light to the retina of an eye, the certain wavelength of the light being such as to make the fovea of the eye clear, prominent, and resolvable;
a detector for detecting light that is reflected from said eye to form detection information including the clear, prominent, and resolvable fovea;
a display located at a distance from said eye; and
means for mapping the detection information to the display for locating the clear, prominent, and resolvable fovea on said display for forming an eye-gaze point by the location of the clear, prominent, and resolvable fovea. - View Dependent Claims (23)
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Specification