Image processing technology for identification of red eyes in image
First Claim
1. A computer program that causes a computer to function as an image processing apparatus comprising:
- a characteristic region extracting unit for, based on characteristic levels of a target region encompassing an eye region of a target image, extracting from the target region as candidate red-eye regions multiple characteristic regions that include iris regions; and
a red-eye region identification unit for identifying a red-eye region based on existence of contact between the iris regions and other characteristic regions, tone characteristics regarding characteristic levels of each characteristic region, and area information regarding areas of each characteristic region.
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Abstract
A computer program capable of appropriately identifying red-eye regions that are generated under various conditions, by causing a computer to function as an image processing apparatus having a characteristic region extracting unit that, based on characteristic levels of a target region encompassing an eye region of a target image, extracts from the target region as candidate red-eye regions multiple characteristic regions that include iris regions, and a red-eye region identification unit for identifying a red-eye region based on existence of contact between the iris regions and other characteristic regions, tone characteristics regarding characteristic levels of each characteristic region, and area information regarding areas of each characteristic region.
129 Citations
15 Claims
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1. A computer program that causes a computer to function as an image processing apparatus comprising:
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a characteristic region extracting unit for, based on characteristic levels of a target region encompassing an eye region of a target image, extracting from the target region as candidate red-eye regions multiple characteristic regions that include iris regions; and
a red-eye region identification unit for identifying a red-eye region based on existence of contact between the iris regions and other characteristic regions, tone characteristics regarding characteristic levels of each characteristic region, and area information regarding areas of each characteristic region. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A computer program that causes a computer to function as an image processing apparatus comprising:
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a characteristic region extracting unit for, based on characteristic levels regarding a target region encompassing an eye region in a target image, extracting as candidate red-eye regions from the target region multiple characteristic regions that include iris regions;
a contact relationship detecting unit for determining whether each iris region is in contact with another characteristic region; and
a red-eye region identification unit for, where the contact relationship detecting unit determines that the iris region is in contact with another characteristic region, establishing the entire region comprising the iris region and the characteristic region as a candidate red-eye region, and identifying one of the regions thus established as a red-eye region. - View Dependent Claims (13)
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14. An image processing apparatus comprising:
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a characteristic region extracting unit for, based on characteristic levels regarding a target region encompassing an eye region in a target image, extracting as candidate red-eye regions from the target region multiple characteristic regions that include iris regions; and
a red-eye region identification unit for identifying a red-eye region based on existence of contact between the iris regions and other characteristic regions, tone characteristics regarding characteristic levels of each characteristic region, and area information regarding areas of each characteristic region.
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15. An image processing method comprising the steps of:
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extracting as candidate red-eye regions, based on the characteristic levels for a target region encompassing an eye region in the target image, multiple characteristic regions that include iris regions from the target region; and
identifying a red-eye region based on existence of contact between the iris regions and other characteristic regions, tone characteristics regarding characteristic levels of each characteristic region, and area information regarding areas of each characteristic region.
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Specification