Method of improving orientation and color balance of digital images using face detection information
First Claim
1. A method of digital image processing using face detection for achieving desired chromatic parameters for a face, comprising using a digital image acquisition device or external image processing device, or a combination thereof, that includes a processor that is programmed to perform the method, wherein the method comprises:
- identifying a group of pixels that correspond to the face within a digital image;
identifying one or more sub-groups of pixels that correspond to one or more facial features of the face;
determining initial chrominance values of one or more chromatic parameters of pixels of the one or more sub-groups of pixels;
determining at least one initial chromatic parameter based on the initial chrominance values; and
using a spatial mask to determine varying degrees of adjustment of the initial chrominance values of the one or more chromatic parameters;
determining adjusted values of the one or more chromatic parameters of the pixels of the one or more sub-groups of pixels, based on at least in part on;
the spatial mask, and a comparison of the initial chromatic parameter with the desired chromatic parameter.
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Accused Products
Abstract
A method of generating one or more new spatial and chromatic variation digital images uses an original digitally-acquired image which including a face or portions of a face. A group of pixels that correspond to a face within the original digitally-acquired image is identified. A portion of the original image is selected to include the group of pixels. Values of pixels of one or more new images based on the selected portion are automatically generated, or an option to generate them is provided, in a manner which always includes the face within the one or more new images. Such method may be implemented to automatically establish the correct orientation and color balance of an image. Such method can be implemented as an automated method or a semi automatic method to guide users in viewing, capturing or printing of images.
19 Citations
36 Claims
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1. A method of digital image processing using face detection for achieving desired chromatic parameters for a face, comprising using a digital image acquisition device or external image processing device, or a combination thereof, that includes a processor that is programmed to perform the method, wherein the method comprises:
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identifying a group of pixels that correspond to the face within a digital image; identifying one or more sub-groups of pixels that correspond to one or more facial features of the face; determining initial chrominance values of one or more chromatic parameters of pixels of the one or more sub-groups of pixels; determining at least one initial chromatic parameter based on the initial chrominance values; and using a spatial mask to determine varying degrees of adjustment of the initial chrominance values of the one or more chromatic parameters; determining adjusted values of the one or more chromatic parameters of the pixels of the one or more sub-groups of pixels, based on at least in part on; the spatial mask, and a comparison of the initial chromatic parameter with the desired chromatic parameter. - View Dependent Claims (2, 3, 4, 5, 6)
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7. One or more processor readable storage devices having processor readable code embodied thereon, said processor readable code for programming one or more processors to perform a method of digital image processing using face detection for achieving desired chromatic parameters for a face, the method comprising:
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identifying a group of pixels that correspond to the face within a digital image; identifying one or more sub-groups of pixels that correspond to one or more facial features of the face; determining initial chrominance values of one or more chromatic parameters of pixels of the one or more sub-groups of pixels; determining at least one initial chromatic parameter based on the initial chrominance values; and using a spatial mask to determine varying degrees of adjustment of the initial chrominance values of the one or more chromatic parameters; determining adjusted values of the one or more chromatic parameters of the pixels of the one or more sub-groups of pixels, based on at least in part on; the spatial mask, and a comparison of the initial chromatic parameter with the desired chromatic parameter. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A digital image acquisition device, comprise a lens, an image sensor, a processor, and a processor readable storage device having processor readable code embodied thereon for programming the processor to perform a method of digital image processing using face detection for achieving desired chromatic parameters for a face, the method comprising:
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identifying a group of pixels that correspond to the face within a digital image; identifying one or more sub-groups of pixels that correspond to one or more facial features of the face; determining initial chrominance values of one or more chromatic parameters of pixels of the one or more sub-groups of pixels; determining at least one initial chromatic parameter based on the initial chrominance values; and using a spatial mask to determine varying degrees of adjustment of the initial chrominance values of the one or more chromatic parameters; determining adjusted values of the one or more chromatic parameters of the pixels of the one or more sub-groups of pixels, based on at least in part on; the spatial mask, and a comparison of the initial chromatic parameter with the desired chromatic parameter. - View Dependent Claims (14, 15, 16, 17, 18)
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19. A method of digital image processing using face detection for achieving desired chromatic parameters for a face, comprising using a digital image acquisition device or external image processing device, or a combination thereof, that includes a processor that is programmed to perform the method, wherein the method comprises:
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identifying a group of pixels that correspond to the face within a digital image; generating in-camera, capturing or otherwise obtaining in-camera a collection of reference images including said face; tracking said face within said collection of reference images; identifying one or more sub-groups of pixels that correspond to one or more facial features of the face including at least one sub-group of pixels that substantially comprise one or two eyes, a mouth, a chin or a nose, or combinations thereof; determining initial chrominance values of one or more chromatic parameters of said pixels of the one or more sub-groups of pixels that substantially comprise one or two eyes, a mouth, a chin or a nose, or combinations thereof; determining at least one initial chromatic parameter based on the initial chrominance values; and determining adjusted values of the one or more chromatic parameters of the pixels of the one or more sub-groups of pixels, including said at least one sub-group of pixels that substantially comprise one or two eyes, a mouth, a chin or a nose, or combinations thereof, based on a comparison of the initial chromatic parameter with the desired chromatic parameter. - View Dependent Claims (20, 21, 22, 23, 24)
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25. One or more processor readable storage devices having processor readable code embodied thereon, said processor readable code for programming one or more processors to perform a method of digital image processing using face detection for achieving desired chromatic parameters for a face, the method comprising:
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identifying a group of pixels that correspond to the face within a digital image; generating in-camera, capturing or otherwise obtaining in-camera a collection of reference images including said face; tracking said face within said collection of reference images; identifying one or more sub-groups of pixels that correspond to one or more facial features of the face including at least one sub-group of pixels that substantially comprise one or two eyes, a mouth, a chin or a nose, or combinations thereof; determining initial chrominance values of one or more chromatic parameters of pixels of the one or more sub-groups of pixels including said at least one sub-group of pixels that substantially comprise one or two eyes, a mouth, a chin or a nose, or combinations thereof; determining at least one initial chromatic parameter based on the initial chrominance values; and determining adjusted values of the one or more chromatic parameters of the pixels of the one or more sub-groups of pixels, including said at least one sub-group of pixels that substantially comprise one or two eyes, a mouth, a chin or a nose, or combinations thereof, based on a comparison of the initial chromatic parameter with the desired chromatic parameter. - View Dependent Claims (26, 27, 28, 29, 30)
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31. A digital image acquisition device, comprise a lens, an image sensor, a processor, and a processor readable storage device having processor readable code embodied thereon for programming the processor to perform a method of digital image processing using face detection for achieving desired chromatic parameters for a face, the method comprising:
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identifying a group of pixels that correspond to the face within a digital image; generating in-camera, capturing or otherwise obtaining in-camera a collection of reference images including said face; tracking said face within said collection of reference images; identifying one or more sub-groups of pixels that correspond to one or more facial features of the face including at least one sub-group of pixels that substantially comprise one or two eyes, a mouth, a chin or a nose, or combinations thereof; determining initial chrominance values of one or more chromatic parameters of pixels of the one or more sub-groups of pixels including said at least one sub-group of pixels that substantially comprise one or two eyes, a mouth, a chin or a nose, or combinations thereof; determining at least one initial chromatic parameter based on the initial chrominance values; and determining adjusted values of the one or more chromatic parameters of the pixels of the one or more sub-groups of pixels, including said at least one sub-group of pixels that substantially comprise one or two eyes, a mouth, a chin or a nose, or combinations thereof, based on a comparison of the initial chromatic parameter with the desired chromatic parameter. - View Dependent Claims (32, 33, 34, 35, 36)
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Specification