Particular-region detection method and apparatus, and program therefor
First Claim
1. A particular-region detection method of detecting particular regions of persons from an image including a plurality of persons as objects, comprising:
- detecting a region of the image satisfying detection conditions for particular region candidates as a particular region candidate;
detecting a face region of a first person and specifying the particular region candidate as a particular region to be detected on condition that the particular region candidate is included in the detected face region;
storing face information regarding a face of the first person obtained when the face region is detected; and
accessing the face information when a face region of a second person is further detected in the image after said storing of the face information, and detecting the face region of the second person by using the face information as a face detection condition.
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Abstract
A particular-region such as red-eye region of a person in an image is detected at a high speed by a particular-region detection apparatus, as follows. At first, a region of the image satisfying detection conditions for particular region candidates is detected as a particular region candidate. Next, a face region of a first person is detected and the particular region candidate is specified as a particular region to be detected on condition that the particular region candidate is included in the detected face region. Then, face information regarding a face of the first person obtained when the face region is detected is stored. When a face region of a second person is further detected in the image or other image after storing of the face information, the face information is accessed and recalled and the face region of the second person is detected by using the face information as a face detection condition.
83 Citations
12 Claims
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1. A particular-region detection method of detecting particular regions of persons from an image including a plurality of persons as objects, comprising:
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detecting a region of the image satisfying detection conditions for particular region candidates as a particular region candidate;
detecting a face region of a first person and specifying the particular region candidate as a particular region to be detected on condition that the particular region candidate is included in the detected face region;
storing face information regarding a face of the first person obtained when the face region is detected; and
accessing the face information when a face region of a second person is further detected in the image after said storing of the face information, and detecting the face region of the second person by using the face information as a face detection condition. - View Dependent Claims (2, 3, 4)
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5. A particular-region detection method of detecting particular regions of persons from a plurality of images including the persons as objects, comprising:
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detecting a region of an image satisfying detection conditions for particular region candidates as a particular region candidate;
detecting a face region of a first person and specifying the particular region candidate as a particular region to be detected on condition that the particular region candidate is included in the detected face region;
storing face information regarding a face of the first person obtained when the face region is detected; and
accessing the face information when a face region of a second person is further detected in other image after said storing of the face information, and detecting the face region of the second person by using the face information as a face detection condition. - View Dependent Claims (6)
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7. A particular-region detection apparatus for detecting a particular region of a person from an image including the person as an object, comprising:
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detection means for detecting a region of the image satisfying detection conditions for particular region candidates as a particular region candidate;
specifying means for detecting a face region of the person and specifying the particular region candidate as a particular region to be detected on condition that the particular region candidate is included in the detected face region; and
memory means for storing face information regarding a face of a person which is obtained by previous detection and specification by said specifying means, wherein said specifying means detects the face region of the person by retrieving the face information stored in the memory means and by using the face information as a face detection condition. - View Dependent Claims (8)
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9. A program for causing a computer to execute processing of detecting particular regions of persons from an image including a plurality of persons as objects, the program comprising the procedures of;
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causing calculating means of the computer to detect a region of the image satisfying detection conditions for particular region candidates as a particular region candidate;
causing the calculating means to detect a face region of a first person, and specify the particular region candidate as a particular region to be detected on condition that the particular region candidate is included in the detected face region;
causing memory means of the computer to store face information regarding a face of the first person obtained when the face region is detected; and
causing the calculating means to detect, when a face region of a second person is further detected in the image by the calculating means after the face information is stored, the face region of the second person by using the face information as a face detection condition. - View Dependent Claims (10)
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11. A program for causing a computer to execute processing of detecting particular regions of persons from a plurality of images including the persons as objects, the program comprising the procedures of:
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causing calculating means of the computer to detect a region of an image satisfying detection conditions for particular region candidates as a particular region candidate;
causing the calculating means to detect a face region of a first person, and specify the particular region candidate as a particular region to be detected on condition that the particular region candidate is included in the detected face region;
causing memory means of the computer to store face information regarding a face of the first person obtained when the face region is detected; and
causing the calculating means to detect, when a face region of a second person is further detected in other image by the calculating means after the face information is stored, the face region by using the face information as a face detection condition. - View Dependent Claims (12)
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Specification