Interactive refocusing of electronic images
First Claim
Patent Images
1. A method of refocusing a light field image in response to user input, the method comprising:
- receiving a light field image comprising light field data;
digitally refocusing the light field image to generate a plurality of refocused images, each having a focus depth;
storing the generated plurality of refocused images in a storage device;
for each of a plurality of two-dimensional positions in the light field image;
determining which of the plurality of refocused images is in focus at the two-dimensional position; and
storing, in a look-up table, an index entry associating the two-dimensional position with the identified refocused image;
displaying one of the refocused images, the displayed image having a first focus depth;
receiving user input to select a two-dimensional position within the displayed image; and
in response to the received input;
retrieving, from the look-up table, an index entry identifying a stored refocused image corresponding to the selected two-dimensional position, the stored refocused image having a second focus depth different from the first focus depth;
retrieving the identified refocused image from the storage device; and
displaying the retrieved refocused image having the second focus depth.
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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
16 Claims
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1. A method of refocusing a light field image in response to user input, the method comprising:
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receiving a light field image comprising light field data; digitally refocusing the light field image to generate a plurality of refocused images, each having a focus depth; storing the generated plurality of refocused images in a storage device; for each of a plurality of two-dimensional positions in the light field image; determining which of the plurality of refocused images is in focus at the two-dimensional position; and storing, in a look-up table, an index entry associating the two-dimensional position with the identified refocused image; displaying one of the refocused images, the displayed image having a first focus depth; receiving user input to select a two-dimensional position within the displayed image; and in response to the received input; retrieving, from the look-up table, an index entry identifying a stored refocused image corresponding to the selected two-dimensional position, the stored refocused image having a second focus depth different from the first focus depth; retrieving the identified refocused image from the storage device; and displaying the retrieved refocused image having the second focus depth. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification