System and method for recognizing a 3-D object by generating a rotated 2-D image of the object from a set of 2-D enrollment images
First Claim
1. A method of electronically recognizing a three-dimensional object X;
- said method including the steps of;
storing in a memory, a set of two-dimensional images X1 -Xn of said object X as viewed from at least three different directions;
acquiring a two-dimensional image of an unidentified object as viewed from a new direction which lies between said different directions;
automatically generating, from said stored set of images, a rotated two-dimensional image of said object X as viewed from a direction which is closer to said new direction than any of said different directions; and
,identifying said unidentified object as said object X only if a correlation between said image of said unidentified object and said rotated image exceeds a predetermined threshold.
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Accused Products
Abstract
A three-dimensional object X is recognized by a method which includes the steps of: a) storing in a memory, a set of two-dimensional enrollment images X1 -Xn of the object X as viewed from n different directions; b) acquiring a two-dimensional access image of an unidentified object as viewed from a new direction which lies between the n different directions; c) generating, from the stored set of images, a rotated two-dimensional image of the object X as viewed from a direction which is closer to the new direction than any of the n different directions; and, d) identifying the unidentified object as the object X only if a correlation between the image of the unidentified object and the rotated image exceeds a predetermined threshold. By generating the rotated image, misalignments with the access image of the unidentified object are reduced; and thus the predetermined threshold can be raised to reduce recognition errors.
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Citations
16 Claims
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1. A method of electronically recognizing a three-dimensional object X;
- said method including the steps of;
storing in a memory, a set of two-dimensional images X1 -Xn of said object X as viewed from at least three different directions; acquiring a two-dimensional image of an unidentified object as viewed from a new direction which lies between said different directions; automatically generating, from said stored set of images, a rotated two-dimensional image of said object X as viewed from a direction which is closer to said new direction than any of said different directions; and
,identifying said unidentified object as said object X only if a correlation between said image of said unidentified object and said rotated image exceeds a predetermined threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
- said method including the steps of;
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16. An electronic system for recognizing a three-dimensional object X;
- said system being comprised of;
a memory for storing a set of two-dimensional images X1 -Xn of said object X as viewed from at least three different directions; a camera for acquiring a two-dimensional image of an unidentified object as viewed from a new direction which lies between said different directions; an image rotating means for automatically generating from said stored set of images, a rotated two-dimensional image of said object X as viewed from a direction which is closer to said new direction than any of said different directions; and
,a correlating means, for identifying said unidentified object as said object X only if a correlation between said image of said unidentified object and said rotated image exceeds a predetermined threshold.
- said system being comprised of;
Specification