Object processing employing movement
First Claim
Patent Images
1. A method comprising:
- capturing plural successive images of an object from different viewpoints using a camera-equipped device, said capturing occurring during relative movement between the device and the object; and
by reference to data thereby collected, making a determination concerning the object, based on 2D directional albedo data obtained by processing said plural successive images from different viewpoints,wherein said determination is made independently of information about positioning of any illumination source relative to the object.
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Abstract
Directional albedo of a particular article, such as an identity card, is measured and stored. When the article is later presented, it can be confirmed to be the same particular article by re-measuring the albedo function, and checking for correspondence against the earlier-stored data. The re-measuring can be performed through us of a handheld optical device, such as a camera-equipped cell phone. The albedo function can serve as random key data in a variety of cryptographic applications. The function can be changed during the life of the article. A variety of other features are also detailed.
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Citations
14 Claims
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1. A method comprising:
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capturing plural successive images of an object from different viewpoints using a camera-equipped device, said capturing occurring during relative movement between the device and the object; and by reference to data thereby collected, making a determination concerning the object, based on 2D directional albedo data obtained by processing said plural successive images from different viewpoints, wherein said determination is made independently of information about positioning of any illumination source relative to the object. - View Dependent Claims (2, 3, 4, 5, 6, 8, 9, 10)
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7. A method comprising:
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capturing plural successive images of an object from different viewpoints using a camera-equipped device, said capturing occurring during relative movement between the device and the object; by reference to data thereby collected, making a determination concerning the object, based on 2D directional albedo data obtained by processing said plural successive images from different viewpoints; and determining a geometrical position of the object relative to the camera by reference to a watermark signal steganographically encoded on the object.
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11. A non-transitory computer readable storage medium having instructions stored therein that, if executed by a processing device, cause the processing device to perform a method including:
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capturing plural successive images of an object using a camera-equipped device, said images having different viewpoints; and by reference to data thereby collected, making a determination concerning the object, based on 2D directional albedo data obtained by processing said plural successive images from different viewpoints, wherein said determination is made independently of information about positioning of any illumination source relative to the object.
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12. A portable device including a camera, a processor, and a memory, the memory storing instructions that configure the processor to:
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capture plural successive images of an object using said device, said images having different viewpoints; and by reference to data thereby collected, make a determination concerning the object, based on 2D directional albedo data obtained by processing said plural successive images from different viewpoints, wherein said determination is made independently of information about positioning of any illumination source relative to the object.
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13. A non-transitory computer readable storage medium having instructions stored therein that, if executed by a processing device, cause the processing device to perform a method including:
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capturing plural successive images of an object using a camera-equipped device, said images having different viewpoints; and by reference to data thereby collected, making a determination concerning the object, based on 2D directional albedo data obtained by processing said plural successive images from different viewpoints; and determining a geometrical position of the object relative to the camera by reference to a watermark signal steganographically encoded on the object.
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14. A portable device including a camera, a processor, and a memory, the memory storing instructions that configure the processor to:
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capture plural successive images of an object using said device, said images having different viewpoints; and by reference to data thereby collected, make a determination concerning the object, based on 2D directional albedo data obtained by processing said plural successive images from different viewpoints; and determine a geometrical position of the object relative to the camera by reference to a watermark signal steganographically encoded on the object.
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Specification