Interactive refocusing of electronic images
First Claim
Patent Images
1. A method of refocusing an image, the method comprising:
- in a processor, obtaining a set of refocused images generated from a single captured light field image comprising a plurality of pixels and representing a scene, wherein each refocused image comprises an image of the scene at a distinct focal depth;
in the processor, determining refocus depths for at least a portion of the captured image;
storing the refocus depths in a look-up table; and
in the same or a different processor, refocusing at least a portion of the captured image at a desired refocus depth determined from the look-up table;
wherein determining refocus depths for at least a portion of the captured image comprises, for each of at least a subset of the pixels, determining the refocus depth for the pixel by searching other pixels surrounding the pixel until a pixel with a known refocus depth is found.
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Abstract
A method is performed to refocus a digital photographic image comprising a plurality of pixels. In the method, a set of images is computed corresponding to the digital photographic image and focused at different depths. Refocus depths for at least a subset of the pixels are identified and stored in a look-up table. At least a portion of the digital photographic image is refocused at a desired refocus depth determined from the look-up table.
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Citations
30 Claims
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1. A method of refocusing an image, the method comprising:
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in a processor, obtaining a set of refocused images generated from a single captured light field image comprising a plurality of pixels and representing a scene, wherein each refocused image comprises an image of the scene at a distinct focal depth; in the processor, determining refocus depths for at least a portion of the captured image; storing the refocus depths in a look-up table; and in the same or a different processor, refocusing at least a portion of the captured image at a desired refocus depth determined from the look-up table; wherein determining refocus depths for at least a portion of the captured image comprises, for each of at least a subset of the pixels, determining the refocus depth for the pixel by searching other pixels surrounding the pixel until a pixel with a known refocus depth is found. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A system for refocusing an image, the system comprising:
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a processor, configured to perform the operations of; obtaining a set of refocused images generated from a single captured light field image comprising a plurality of pixels and representing a scene, wherein each refocused image comprises an image of the scene at a distinct focal depth; and determining refocus depths for at least a portion of the captured image; and a storage device, communicatively coupled to the processor, configured to store the refocus depths in a look-up table; wherein the processor is further configured to refocus at least a portion of the captured image at a desired refocus depth determined from the look-up table; wherein determining refocus depths for at least a portion of the captured image comprises, for each of at least a subset of the pixels, determining the refocus depth for the pixel by searching other pixels surrounding the pixel until a pixel with a known refocus depth is found. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30)
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Specification