SYSTEMS, DEVICES AND METHODS FOR TRACKING OBJECTS ON A DISPLAY
First Claim
1. A method of tracking an object with an electronic device, the method comprising:
- defining a reference value based on an average light intensity of pixels in a region of an image frame comprising the object;
determining an average light intensity of pixels in the region of a current image frame comprising the object;
calculating a difference between the reference value and the determined average light intensity for the region in the current image frame;
adjusting the intensity of pixels in the current image frame when the difference is greater than an intensity limit;
applying a gain filter to the current image frame; and
tracking the object using the pixels in the current image frame.
1 Assignment
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Accused Products
Abstract
Systems, devices and methods for improved tracking with an electronic device are disclosed. The disclosures employ advanced exposure compensation and/or stabilization techniques. The tracking features may therefore be used in an electronic device to improve tracking performance under dramatically changing lighting conditions and/or when exposed to destabilizing influences, such as jitter. Historical data related to the lighting conditions and/or to the movement of a region of interest containing the tracked object are advantageously employed to improve the tracking system under such conditions.
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Citations
30 Claims
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1. A method of tracking an object with an electronic device, the method comprising:
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defining a reference value based on an average light intensity of pixels in a region of an image frame comprising the object; determining an average light intensity of pixels in the region of a current image frame comprising the object; calculating a difference between the reference value and the determined average light intensity for the region in the current image frame; adjusting the intensity of pixels in the current image frame when the difference is greater than an intensity limit; applying a gain filter to the current image frame; and tracking the object using the pixels in the current image frame. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A system for tracking an object with an electronic device, the system comprising:
a processor configured to; define a reference value based on an average light intensity of pixels in a region of an image frame comprising the object; determine an average light intensity of pixels in the region of a current image frame comprising the object; calculate a difference between the reference value and the determined average light intensity for the region in the current image frame; adjust the intensity of pixels in the current image frame when the difference is greater than an intensity limit; apply a gain filter to the current image frame; and track the object using the pixels in the current image frame. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A system for tracking an object with an electronic device, the system comprising:
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means for defining a reference value based on an average light intensity of pixels in a region of an image frame comprising the object; means for determining an average light intensity of pixels in the region of a current image frame comprising the object; means for calculating a difference between the reference value and the determined average light intensity for the region in the current image frame; means for adjusting the intensity of pixels in the current image frame when the difference is greater than an intensity limit; means for applying a gain filter to the current image frame; and means for tracking the object using the pixels in the current image frame. - View Dependent Claims (20, 21, 22, 23, 24)
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25. A non-transitory computer readable medium configured to store instructions that when executed by a processor perform a method for tracking an object with an electronic device, the method comprising:
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defining a reference value based on an average light intensity of pixels in a region of an image frame comprising the object; determining an average light intensity of pixels in the region of a current image frame comprising the object; calculating a difference between the reference value and the determined average light intensity for the region in the current image frame; adjusting the intensity of pixels in the current image frame when the difference is greater than an intensity limit; applying a gain filter to the current image frame; and tracking the object using the pixels in the current image frame. - View Dependent Claims (26, 27, 28, 29, 30)
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Specification