Integrated chip for detecting eye movement
First Claim
1. An integrated chip for detecting eye movement, the integrated chip comprising:
- a sensor component for receiving an image of a user'"'"'s eye and processing the eye image to identify a center of a pupil of the eye image;
wherein the sensor component comprises a CMOS image sensor (CIS) pixel array,wherein the CIS pixel array comprises;
a shrink means for reducing a dark interference region around a pupil portion of the eye'"'"'s image; and
an expand means for reducing a light interference region occurring in the pupil portion of the eye'"'"'s image,wherein the CIS pixel array identifies a center of the pupil of the eye image at a pixel level by shrinking the eye image toward the center of the pupil where the center of the pupil identifies a point the user is viewing.
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Abstract
According to one embodiment, the present invention relates to an integrated chip for detecting eye movement. An eye tracker device may include a CMOS image sensor which provides an imaging process of a user'"'"'s eye image. The eye tracker device may be implemented on a single chip where pixel-level image processing is performed, thereby achieving high operating speed. A smart CMOS Image Sensor (CIS) pixel array may include a CMOS image sensor with a “shrink” function of locating a center of a pupil while eliminating influence of a black region around the eyebrow or pupil at the pixel level so as to accurately find the location at which a user views. The CIS pixel array may include an “expand” function of removing glint or other interference occurring in the pupil due to external light or other source.
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Citations
30 Claims
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1. An integrated chip for detecting eye movement, the integrated chip comprising:
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a sensor component for receiving an image of a user'"'"'s eye and processing the eye image to identify a center of a pupil of the eye image;
wherein the sensor component comprises a CMOS image sensor (CIS) pixel array,wherein the CIS pixel array comprises; a shrink means for reducing a dark interference region around a pupil portion of the eye'"'"'s image; and an expand means for reducing a light interference region occurring in the pupil portion of the eye'"'"'s image, wherein the CIS pixel array identifies a center of the pupil of the eye image at a pixel level by shrinking the eye image toward the center of the pupil where the center of the pupil identifies a point the user is viewing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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28. A method for implementing an integrated chip for detecting eye movement, wherein the integrated chip comprises an image sensor component for receiving an eye image and processing the eye image to identify a center of a pupil of the eye, the method comprising the steps of:
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receiving an eye image by the image sensor; identifying an interference in the eye image; removing the interference in the eye image, wherein the step of removing interference comprises at least one of a shrink function for removing a dark interference region around the pupil of the eye image by modifying a plurality of dark pixels into white pixels and an expand function for removing a light interference region in the pupil of the eye image; and locating a center of a pupil of the eye image at a pixel level by shrinking the eye image toward the center of the pupil where the center of the pupil identifies a point the user is viewing. - View Dependent Claims (29, 30)
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Specification