IMAGE PROCESSING APPARATUS AND SUBJECT DISCRIMINATION METHOD
First Claim
1. An image processing apparatus comprising:
- an image input unit configured to input an image;
a scanning unit configured to scan a detection window on the input image;
a first discrimination unit configured to determine whether a pattern within the detection window is a subject based on a plurality of characteristic amounts obtained from within a first region among a plurality of regions within the detection window; and
a second discrimination unit configured to determine, if it is determined that the pattern is not the subject by the first discrimination unit, whether the pattern is the subject based on a plurality of characteristic amounts obtained from a second region in which a probability that occlusion of the subject occurs is higher than that in the first region among the plurality of regions.
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Abstract
An image processing apparatus includes an image input unit configured to input an image, a scanning unit configured to scan a detection window on the input image, a first discrimination unit configured to determine whether a pattern within the detection window is a subject based on a plurality of characteristic amounts obtained from within a first region among a plurality of regions within the detection window, and a second discrimination unit configured to determine, if it is determined that the pattern is not the subject by the first discrimination unit, whether the pattern is the subject based on a plurality of characteristic amounts obtained from a second region in which a probability that occlusion of the subject occurs is higher than that in the first region among the plurality of regions. Accordingly, a subject can be detected efficiently, and omissions of detection can be reduced.
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Citations
7 Claims
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1. An image processing apparatus comprising:
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an image input unit configured to input an image; a scanning unit configured to scan a detection window on the input image; a first discrimination unit configured to determine whether a pattern within the detection window is a subject based on a plurality of characteristic amounts obtained from within a first region among a plurality of regions within the detection window; and a second discrimination unit configured to determine, if it is determined that the pattern is not the subject by the first discrimination unit, whether the pattern is the subject based on a plurality of characteristic amounts obtained from a second region in which a probability that occlusion of the subject occurs is higher than that in the first region among the plurality of regions. - View Dependent Claims (2, 3, 4, 5)
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6. A method for subject discrimination performed by an image processing apparatus, the method comprising:
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inputting an image; scanning a detection window on the input image; determining whether a pattern within the detection window is a subject based on a plurality of characteristic amounts obtained from within a first region among a plurality of regions within the detection window; and if it is determined that the pattern is not the subject, determining whether the pattern is the subject based on a plurality of characteristic amounts obtained from within a second region in which a probability that occlusion of the subject occurs is higher than the first region among the plurality of regions.
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7. A computer-readable storage medium that stores a program for causing a computer to function as,
an image input unit configured to input an image; -
a scanning unit configured to scan a detection window on the input image; a first discrimination unit configured to determine whether a pattern within the detection window is a subject based on a plurality of characteristic amounts obtained from within a first region among a plurality of regions within the detection window; and a second discrimination unit configured to determine, if it is determined that the pattern is not the subject by the first discrimination unit, whether the pattern is the subject based on a plurality of characteristic amounts obtained from a second region in which a probability that occlusion of the subject occurs is higher than that in the first region among the plurality of regions.
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Specification