Digital image processing using face detection and skin tone information
First Claim
Patent Images
1. A method of identify a face image within a digital image by detecting and tracking a face image within a collection of low resolution images using skin tone information, comprising:
- identifying a group of pixels that correspond to a face image within the digital image;
generating in-camera, capturing or otherwise obtaining in-camera a collection of low resolution images including said face image;
tracking said face image within said collection of low resolution images;
detecting a skin tone for the face image by determining one or more color or tonal values, or combinations thereof, for the group of pixels and comparing with one or more default color or tonal values, or combinations thereof; and
adjusting values of one or more parameters for the group of pixels, including adjusting focus based on location of the face determined based on the detected skin tone.
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Abstract
A technique for processing a digital image uses face detection to achieve one or more desired image processing parameters. A group of pixels is identified that corresponds to a face image within the digital image. A skin tone is detected for the face image by determining one or more default color or tonal values, or combinations thereof, for the group of pixels. Values of one or more parameters are adjusted for the group of pixels that correspond to the face image based on the detected skin tone.
77 Citations
21 Claims
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1. A method of identify a face image within a digital image by detecting and tracking a face image within a collection of low resolution images using skin tone information, comprising:
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identifying a group of pixels that correspond to a face image within the digital image; generating in-camera, capturing or otherwise obtaining in-camera a collection of low resolution images including said face image; tracking said face image within said collection of low resolution images; detecting a skin tone for the face image by determining one or more color or tonal values, or combinations thereof, for the group of pixels and comparing with one or more default color or tonal values, or combinations thereof; and adjusting values of one or more parameters for the group of pixels, including adjusting focus based on location of the face determined based on the detected skin tone. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An image acquisition apparatus including an imaging optical system and digital image detector and storage medium, and having stored therein program instructions for programming one or more processors to perform a method of processing a digital image using face detection to achieve one or more desired image processing parameters, the method comprising:
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identifying a group of pixels that correspond to a face image within the digital image; generating in-camera, capturing or otherwise obtaining in-camera a collection of low resolution images including said face image; tracking said face image within said collection of low resolution images; detecting a skin tone for the face image by determining one or more color or tonal values, or combinations thereof, for the group of pixels and comparing with one or more default color or tonal values, or combinations thereof; and adjusting values of one or more parameters for the group of pixels, including adjusting focus based on location of the face determined based on the detected skin tone. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. One or more non-transitory digital storage devices having embodied therein program instructions for programming one or more processors to perform a method of processing a digital image using face detection to achieve one or more desired image processing parameters, the method comprising:
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identifying a group of pixels that correspond to a face image within the digital image; generating in-camera, capturing or otherwise obtaining in-camera a collection of low resolution images including said face image; tracking said face image within said collection of low resolution images; detecting a skin tone for the face image by determining one or more color or tonal values, or combinations thereof, for the group of pixels and comparing with one or more default color or tonal values, or combinations thereof; and adjusting values of one or more parameters for the group of pixels, including adjusting focus based on location of the face determined based on the detected skin tone. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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Specification