Image analysis – Applications – Biomedical applications
Patent
1994-12-01
1997-05-06
Couso, Jose L.
Image analysis
Applications
Biomedical applications
128754, G06K 900
Patent
active
056279078
ABSTRACT:
Method and apparatus for detecting abnormal regions such as masses and microcalcifications in living tissue depicted in radiographs such as mammograms is presented by digitizing the radiograph to produce a digitized radiograph, and, by computer, identifying, according to predetermined criteria, any suspected abnormal regions; and for each identified suspected abnormal region, extracting multiple topographic layers of the region from the digitized radiograph; and evaluating the extracted multiple topographic layers' abnormal regions to determine whether the region is an abnormal region; and displaying the abnormal regions in a version of the radiograph. Layers are extracted by thresholding the digital radiograph at a particular threshold value for each topographic layer. The threshold value for each other layer is based on the threshold and contrast values in a previous layer.
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Chang Yuang-Hsiang
Gur David
Zheng Bin
Couso Jose L.
University of Pittsburgh
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