Method, system and computer program for locating mobile devices based on imaging
First Claim
1. A method for determining position of a mobile device with at least one imaging device, comprising:
- obtaining, using the at least one imaging device of the mobile device, at least one image including a stationary pattern of pixels;
searching through a database of pixel patterns for a pixel pattern that most closely matches the pattern of pixels in the obtained at least one image;
retrieving from the database as a result of the searching, positional information about one of the pixel patterns that is deemed to most closely match the pattern of pixels in the obtained at least one image; and
analyzing, using a processor of the mobile device, in combination with the retrieved positional information, relative size of or a size differential between the most closely matching pixel pattern and the pattern of pixels in the obtained at least one image to derive positional information about a position of the mobile device.
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Abstract
Method for generating and using a database of pixel patterns includes obtaining images using a mobile device including a common pixel pattern and processing each image based on a size of the pixel pattern and/or angular orientation of the pixel pattern relative to an imaging direction to derive positional information about the pixel pattern. Location of the mobile device is determined by obtaining an image including a stationary pixel pattern, searching the database for the obtained pixel pattern, and retrieving positional information about a closest match pixel pattern. With the retrieved positional information, an angle between an imaging direction in which the image including the closest match pixel pattern was obtained and an imaging direction in which the image was obtained and/or a size differential between the closest match pixel pattern and the pixel pattern in the obtained image is/are analyzed to derive positional information about the mobile device'"'"'s location.
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Citations
22 Claims
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1. A method for determining position of a mobile device with at least one imaging device, comprising:
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obtaining, using the at least one imaging device of the mobile device, at least one image including a stationary pattern of pixels; searching through a database of pixel patterns for a pixel pattern that most closely matches the pattern of pixels in the obtained at least one image; retrieving from the database as a result of the searching, positional information about one of the pixel patterns that is deemed to most closely match the pattern of pixels in the obtained at least one image; and analyzing, using a processor of the mobile device, in combination with the retrieved positional information, relative size of or a size differential between the most closely matching pixel pattern and the pattern of pixels in the obtained at least one image to derive positional information about a position of the mobile device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification