发明名称 |
AUTOMATIC ADAPTIVE SOFT TISSUE THRESHOLDING FOR TWO-PASS CT CONE-BEAM ARTIFACT REDUCTION |
摘要 |
Since the soft tissue levels in an image usually comprise a variety of values between air and bone boundaries, it may not be obvious a priori what threshold value applies. According to an exemplary embodiment of the present invention, an examination apparatus is provided which is adapted for determining the optimal weight for subtraction of a soft tissue correction image without performing a multitude of forward and backward projections. This may be provided determining a roughness function based on a plurality of subtractions of the soft tissue streak image, each subtraction corresponding to a different weighting of the streak image. |
申请公布号 |
EP1941458(A1) |
申请公布日期 |
2008.07.09 |
申请号 |
EP20060809520 |
申请日期 |
2006.10.06 |
申请人 |
PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH;KONINKLIJKE PHILIPS ELECTRONICS N.V. |
发明人 |
FORTHMANN, PETER;GRASS, MICHAEL;PROKSA, ROLAND |
分类号 |
G06T11/00 |
主分类号 |
G06T11/00 |
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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