Foreground/Background Segmentation in Digital Images
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0 Petitions
Accused Products
Abstract
An analysis and classification tool compares at least a portion of a captured image and a reference image of nominally the same scene. One of the captured and reference images is taken with flash and the other is taken without flash. The tool provides a measure of the difference in illumination between the captured image and the reference image. The tool compares the measure with a threshold and segments a foreground region from a background region based on the measure.
111 Citations
112 Claims
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1-56. -56. (canceled)
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57. A digital image acquisition system having no photographic film, comprising:
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(a) an apparatus for capturing digital images, including a lens, an image sensor and a processor; (b) a flash unit for providing illumination during image capture; (c) an analysis tool for comparing at least a portion of a captured image and a reference image of nominally the same scene, at least one of said captured and reference images being taken with flash, said analysis tool providing a measure of the difference in illumination between said captured image and said reference image; and (d) a classification tool for comparing said measure with a threshold and for categorizing said scene as outdoor or indoor based on said measure. - View Dependent Claims (58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86)
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- 87. A computer readable medium having code embodied therein for programming a processor to perform a method of analyzing a captured image, the computer readable medium comprising an analysis and classification tool for comparing at least a portion of a captured image and a reference image of nominally the same scene, at least one of said captured and reference images being taken with flash, said tool providing a measure of the difference in illumination between said captured image and said reference image, and said tool for comparing said measure with a threshold and for categorising said scene as outdoor or indoor based on said measure.
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100. A method of analysis and classification of a digital image, comprising:
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comparing at least a portion of a captured image and a reference image of nominally the same scene, at least one of said captured and reference images being taken with flash; providing a measure of the difference in illumination between said captured image and said reference image; comparing said measure with a threshold; and categorising said scene as outdoor or indoor based on said measure. - View Dependent Claims (101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112)
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Specification