发明名称 |
Method and System for Detection of Contrast Injection Fluoroscopic Image Sequences |
摘要 |
A method and system for detecting a spatial and temporal location of a contrast injection in a fluoroscopic image sequence is disclosed. Training volumes generated by stacking a sequence of 2D fluoroscopic images in time order are annotated with ground truth contrast injection points. A heart rate is globally estimated for each training volume, and local frequency and phase is estimated in a neighborhood of the ground truth contrast injection point for each training volume. Frequency and phase invariant features are extracted from each training volume based on the heart rate, local frequency and phase, and a detector is trained based on the training volumes and the features extracted for each training volume. The detector can be used to detect the spatial and temporal location of a contrast injection in a fluoroscopic image sequence. |
申请公布号 |
US2012257807(A1) |
申请公布日期 |
2012.10.11 |
申请号 |
US201213455619 |
申请日期 |
2012.04.25 |
申请人 |
SAPP BENJAMIN J.;ZHANG WEI;GEORGESCU BOGDAN;PRUMMER SIMONE;COMANICIU DORIN;SIEMENS AKTIENGESELLSCHAFT |
发明人 |
SAPP BENJAMIN J.;ZHANG WEI;GEORGESCU BOGDAN;PRUMMER SIMONE;COMANICIU DORIN |
分类号 |
G06K9/00 |
主分类号 |
G06K9/00 |
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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