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US 6,480,626 B1Granted
System and method for rapidly accessing image information using segmentation tags
AssigneeXerox Corporation
InventorDennis Lee Venable
Life of this patent
Estimating the term…
Abstract
Segmentation tags are associated with image data. The segmentation tags of the image data are accessed using only a lookup table, which is created using information from the header of the image, and bit operations.
Claims22
A method for accessing tag information of image data of an image, the image comprising a plurality of pixels, the image segmented into a plurality of segments, each segment associated with different segmentation tag information, the method comprising:
- obtaining first information indicating how the segmentation tags have been encoded;
- obtaining second information indicating a set of allowed segmentation tags;
- creating a lookup table based on the first and second information;
- and
- accessing the tag information for at least one of the plurality of segments using the lookup table and at least one bit operation.
2 more elements
A data carrier carrying data for implementing an access library that:
- obtains information indicating a set of allowed segmentation tags of a segmented image;
- obtains information indicating how the segmentation tags have been encoded within the segmented image;
- and
- initializes at least one table lookup based on the information indicating the set of allowed tags and the information indicating how tags have been encoded.
1 more element
A digital image processing system, comprising:
- a segmenter that segments an image by analyzing received image data, associating at least one segmentation tag with each pixel of the image data, generating and associating header information with the received image data, the header information including at least information indicating how the segmentation tags are encoded, and storing the image data along with the segmentation tags and header information;
- apparatus capable of performing at least one bit operation;
- an access library that obtains information indicating a set of allowed segmentation tags, obtains information indicating how the segmentation tags are encoded, and creates a first lookup table based on the information indicating the set of allowed segmentation tags and the information indicating how the segmentation tags are encoded;
- and
- an accessor that accesses at least a portion of the segmentation tag information using the first lookup table and the at least one bit operation and processes the image data in accordance with the accessed tag information.
2 more elements
Dependencies are inferred from the claim text.