Face tracker and partial face tracker for red-eye filter method and apparatus
First Claim
Patent Images
1. A portable digital image capturing device having no photographic film, comprising:
- a flash for providing illumination during image acquisition;
an optical system including a lens and an image sensor for capturing a main digital image;
a half-face tracker for identifying only one or more half-face regions within a series of one or more relatively low resolution reference images, and predicting an approximate location of said one or more half-face regions within the main digital image;
a half-face analyzer for determining one or more half-face regions in the vicinity of the approximate location within the main digital image predicted by the half-face tracker, each half-face region including only one eye and one or both of only a half nose or only a half mouth region; and
a red-eye filter for modifying an area within the main digital image indicative of a red-eye phenomenon based on an analysis of the one or more half-face regions within the main digital image, each including at least one half-face region predicted by the half-face tracker.
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Abstract
An image acquisition device includes a flash and optical system for capturing digital images. A face tracker identifies face regions within a series of one or more relatively low resolution reference images, and predicts face regions within a main digital image. A face analyzer determines one or more partial face regions within the one or more face regions each including at least one eye. A red-eye filter modifies an area within the main digital image indicative of a red-eye phenomenon based on an analysis of one or more partial face regions within the one or more face regions identified and predicted by the face tracker.
364 Citations
29 Claims
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1. A portable digital image capturing device having no photographic film, comprising:
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a flash for providing illumination during image acquisition; an optical system including a lens and an image sensor for capturing a main digital image; a half-face tracker for identifying only one or more half-face regions within a series of one or more relatively low resolution reference images, and predicting an approximate location of said one or more half-face regions within the main digital image; a half-face analyzer for determining one or more half-face regions in the vicinity of the approximate location within the main digital image predicted by the half-face tracker, each half-face region including only one eye and one or both of only a half nose or only a half mouth region; and a red-eye filter for modifying an area within the main digital image indicative of a red-eye phenomenon based on an analysis of the one or more half-face regions within the main digital image, each including at least one half-face region predicted by the half-face tracker. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of capturing and processing within a portable device a digital image including one or more half-face regions not exhibiting any red eye defect, comprising:
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acquiring a series of one or more relatively low resolution reference images; identifying only one or more half-face regions within the one or more relatively low resolution reference images each including only one eye and one or both of only a half nose or only a half mouth region; predicting an approximate location of each of the one or more half-face regions within a main digital image based on the identifying; capturing the main digital image with a portable device that includes a lens and an image sensor; providing flash illumination during the capturing of the main digital image with the portable device; determining and analyzing one or more half-face regions each in a vicinity of an approximate location within the main digital image based on the predicting, each including said only one eye and said one or both of only a half nose or only a half mouth region, within the main digital image, while foregoing within the main digital image analysis of at least one other half face region not including an eye; and modifying an area within the at least one half face region that is determined to be indicative of a red-eye phenomenon based on said analyzing. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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21. One or more processor-readable storage devices having code embedded therein for programming a processor to perform a method of capturing and processing within a portable device a digital image including one or more half-face regions not exhibiting any red eye defect, the method comprising:
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analyzing a series of one or more relatively low resolution reference images; identifying only one or more half-face regions within the one or more relatively low resolution reference images each including only one eye and one or both of only a half nose or only a half mouth region; predicting an approximate location of each of the one or more half-face regions within a main digital image based on the identifying; capturing the main digital image with a portable device that includes a lens and an image sensor; providing flash illumination during the capturing of the main digital image with the portable device; determining and analyzing one or more half-face regions each in a vicinity of an approximate location within the main digital image based on the predicting, each including said only one eye and said one or both of only a half nose or only a half mouth region, within the main digital image, while foregoing within the main digital image analysis of at least one other half face region not including an eye; and modifying an area within the at least one half face region that is determined to be indicative of a red-eye phenomenon based on said analyzing. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29)
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Specification