Face tracking for controlling imaging parameters
First Claim
Patent Images
1. A face detection and recognition method, comprising:
- acquiring, from an image stream, an image including one or more face regions;
calculating an integral image for at least a portion of the image or a sub-sampled version of the at least a portion of the image, or both;
applying a face detection to at least a portion of the integral image to provide one or more candidate face regions;
applying a face recognition, which uses a database, to the one or more candidate face regions to recognize a face in the one or more candidate face regions, and determining an identifier for the recognized face;
storing the identifier for the recognized face in association with the image or a portion thereof that includes the recognized face; and
adjusting one or more image acquisition conditions in an image acquiring device to modify white balance, color balance, focus, or exposure, or combinations thereof, for the recognized face.
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Abstract
A method of tracking faces in an image stream with a digital image acquisition device includes receiving images from an image stream including faces, calculating corresponding integral images, and applying different subsets of face detection rectangles to the integral images to provide sets of candidate regions. The different subsets include candidate face regions of different sizes and/or locations within the images. The different candidate face regions from different images of the image stream are each tracked.
89 Citations
30 Claims
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1. A face detection and recognition method, comprising:
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acquiring, from an image stream, an image including one or more face regions; calculating an integral image for at least a portion of the image or a sub-sampled version of the at least a portion of the image, or both; applying a face detection to at least a portion of the integral image to provide one or more candidate face regions; applying a face recognition, which uses a database, to the one or more candidate face regions to recognize a face in the one or more candidate face regions, and determining an identifier for the recognized face; storing the identifier for the recognized face in association with the image or a portion thereof that includes the recognized face; and adjusting one or more image acquisition conditions in an image acquiring device to modify white balance, color balance, focus, or exposure, or combinations thereof, for the recognized face. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A digital image acquisition device, comprising a lens, an image sensor, a processor, and a processor-readable memory having digital code embedded therein for programming the processor to perform a method of detecting and recognizing faces in digital images acquired by the device, wherein the method comprises:
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acquiring, from an image stream, an image including one or more face regions; calculating an integral image for at least a portion of the image or a sub-sampled version of the at least a portion of the image, or both; applying a face detection to at least a portion of the integral image to provide one or more candidate face regions; applying a face recognition, which uses a database, to the one or more candidate face regions to recognize a face in the one or more candidate face regions, and determining an identifier for the recognized face; storing the identifier for the recognized face in association with the image or a portion thereof that includes the recognized face; and adjusting one or more image acquisition conditions in an image acquiring device to modify white balance, color balance, focus, or exposure, or combinations thereof, for the recognized face. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. One or more non-transitory processor-readable storage media having code embedded therein for programming a processor to perform a method of detecting and recognizing faces in digital images received from an image stream that include one or more face regions, the method comprising:
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calculating an integral image for at least a portion of a digital image or a sub-sampled version of the at least a portion of the image, or both; applying a face detection to at least a portion of the integral image to provide one or more candidate face regions; applying a face recognition, which uses a database, to the one or more candidate face regions to recognize a face in the one or more candidate face regions, and determining an identifier for the recognized face; storing the identifier for the recognized face in association with the image or a portion thereof that includes the recognized face; and adjusting one or more image acquisition conditions in an image acquiring device to modify white balance, color balance, focus, or exposure, or combinations thereof, for the recognized face. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30)
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Specification