发明名称 |
Method, apparatus, and storage medium for detection of nodules in biological tissue using wavelet snakes to characterize features in radiographic images |
摘要 |
A method and apparatus for discrimination of nodules and false positives in digital chest radiographs, using a wavelet snake technique. The wavelet snake is a deformable contour designed to identify the boundary of a relatively round object. The shape of the snake is determined by a set of wavelet coefficients in a certain range of scales. Portions of the boundary of a nodule are first extracted using a multiscale edge representation. The multiscale edges are then fitted by a gradient descent procedure which deforms the shape of a wavelet snake by changing its wavelet coefficients. The degree of overlap between the fitted snake and the multiscale edges is calculated and used as a fit quality indicator for discrimination of nodules and false detections.
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申请公布号 |
US6078680(A) |
申请公布日期 |
2000.06.20 |
申请号 |
US19970900191 |
申请日期 |
1997.07.25 |
申请人 |
ARCH DEVELOPMENT CORPORATION |
发明人 |
YOSHIDA, HIROYUKI;KATSURAGAWA, SHIGEHIKO;AMIT, YALI;DOI, KUNIO |
分类号 |
G06K9/64;G06T7/00;(IPC1-7):G06K9/00 |
主分类号 |
G06K9/64 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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