Automated method and system for region decomposition in digital radiographic images
First Claim
1. An automated method for decomposing a region in a radiographic image into subregions, comprising the steps of:
- (a) smoothing the region at a plurality of scales to generate a plurality of smoothed regions;
(b) computing, at each scale from each smoothed region, the number of connected components in each smoothed region;
(c) determining the most stable range of scales and the most stable number of subregions contained within the range;
(d) classifying each pixel based on the determined range of scales and the determined number of subregions; and
(e) generating a decomposed map for further image processing.
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Abstract
A digital radiographic image is segmented into various regions and a region thereof is further decomposed into subregions, wherein digital image data is acquired and subjected to multiple phases of digital imaging processes. The region decomposition method first uses progressively smoothing techniques to generate smoothed regions at multiple scales. Next, the number of connected components at each scale is computed for each smoothed region. A shape spectrum, which is the number of connected components as a function of scale, is subsequently constructed to determine the most stable range of scales and the most stable number of subregions into which the region is decomposed. Each pixel is then classified into subregions, according to the geometrical relationship of the connected components detected at most stable scales. Finally, a decomposed map is generated to function as multivalued templates for any further image processing to be done on various decomposed subregions.
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Citations
15 Claims
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1. An automated method for decomposing a region in a radiographic image into subregions, comprising the steps of:
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(a) smoothing the region at a plurality of scales to generate a plurality of smoothed regions; (b) computing, at each scale from each smoothed region, the number of connected components in each smoothed region; (c) determining the most stable range of scales and the most stable number of subregions contained within the range; (d) classifying each pixel based on the determined range of scales and the determined number of subregions; and (e) generating a decomposed map for further image processing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A system for decomposing a region in a radiographic image into subregions, comprising:
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(a) means for smoothing the region at a plurality of scales to generate a plurality of smoothed regions; (b) means for computing, at each scale from each smoothed region, the number of connected components in each smoothed region; (c) means for determining the most stable range of scales and the most stable number of subregions contained within the range; (d) means for classifying each pixel based on the determined range of scales and the determined number of subregions; and (e) means for generating a decomposed map for further image processing. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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Specification