System and method for detecting objects in images
First Claim
Patent Images
1. A method for detecting an object in an image, comprising:
- evaluating a plurality of features in each image to determine a cumulative score, in which the cumulative score is increased by α
i if ƒ
(ν
i, I)>
θ
i, and otherwise increased by β
i, where ƒ
( ) is a function of a projection ν
i of a particular patch Ii, θ
i is a comparison threshold, and α and
β
are acceptance and rejection scores, respectively, and wherein the function is a dot product between ν
i and Ii expressed as vectors;
repeating the evaluating while the cumulative score is within a range of an acceptance threshold and a rejection threshold; and
otherwiserejecting the image when the accumulated score is less than the rejection threshold and accepting the image as including the object when the cumulative score is greater than the acceptance threshold.
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Abstract
A method detects an object, such a face, in an image. The image is first partitioned into patches of various sizes using either an integral image or a Gaussian pyramid. Features in each patch are evaluated to determine a cumulative score. The evaluating is repeated while the cumulative score is within a range of an acceptance threshold and a rejection threshold, and otherwise the image is rejected when the accumulated score is less than the rejection threshold and accepted as including the object when the cumulative score is greater than the acceptance threshold.
210 Citations
10 Claims
-
1. A method for detecting an object in an image, comprising:
-
evaluating a plurality of features in each image to determine a cumulative score, in which the cumulative score is increased by α
i if ƒ
(ν
i, I)>
θ
i, and otherwise increased by β
i, where ƒ
( ) is a function of a projection ν
i of a particular patch Ii, θ
i is a comparison threshold, and α and
β
are acceptance and rejection scores, respectively, and wherein the function is a dot product between ν
i and Ii expressed as vectors;repeating the evaluating while the cumulative score is within a range of an acceptance threshold and a rejection threshold; and
otherwiserejecting the image when the accumulated score is less than the rejection threshold and accepting the image as including the object when the cumulative score is greater than the acceptance threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
Specification