SYSTEMS AND METHODS OF LIGHT MODULATION IN EYE TRACKING DEVICES
First Claim
1. A method comprising:
- capturing an image using a camera of an eye tracking device;
detecting a face region of the image, the face region depicting the face of a user;
based on at least a portion of the face region, measuring a parameter of the image;
based on the parameter of the image being outside of a target range, adjusting an attribute associated with the eye tracking device; and
determining, using the eye tracking device, gaze direction of the user after the attribute is adjusted.
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Abstract
An image of a user'"'"'s eyes and face may be analyzed using computer-vision algorithms. A computing device may use the image to determine the location of the user'"'"'s eyes and estimate the direction in which the user is looking. The eye tracking technology may be used in a wide range of lighting conditions and with many different and varying light levels. When a user is near a light source, an automatic exposure feature in the camera may result in the user'"'"'s face and eyes appearing too dark in the image, possibly reducing the likelihood of face and eye detection. Adjusting attributes such as the camera exposure time and the intensity and illumination interval of the light sources based on motion and light levels may improve detection of a user'"'"'s features.
47 Citations
20 Claims
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1. A method comprising:
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capturing an image using a camera of an eye tracking device; detecting a face region of the image, the face region depicting the face of a user; based on at least a portion of the face region, measuring a parameter of the image; based on the parameter of the image being outside of a target range, adjusting an attribute associated with the eye tracking device; and determining, using the eye tracking device, gaze direction of the user after the attribute is adjusted. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A computing device comprising:
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a camera module configured to capture an image; an attribute adjustment module configured to; detect a face region of the image, the face region depicting the face of a user; based on at least a portion of the face region, measure a parameter of the image; based on the parameter of the image being outside of a target range, adjusting an attribute associated with the camera module; and an eye tracking module configured to determine gaze direction of the user after the attribute is adjusted. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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20. A machine-readable storage medium storing instructions which, when executed by one or more processors, cause the one or more processors to perform operations comprising:
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capturing an image using a camera of an eye tracking device; detecting a face region of the image, the face region depicting the face of a user; based on at least a portion of the face region, measuring a parameter of the image; based on the parameter of the image being outside of a target range, adjusting an attribute associated with the eye tracking device; and determining, using the eye tracking device, gaze direction of the user after the attribute is adjusted.
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Specification