发明授权
US07522756B2 Method, system and apparatus for processing radiographic images of scanned objects
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用于处理扫描物体的放射照相图像的方法,系统和装置
- 专利标题: Method, system and apparatus for processing radiographic images of scanned objects
- 专利标题(中): 用于处理扫描物体的放射照相图像的方法,系统和装置
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申请号: US11684176申请日: 2007-03-09
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公开(公告)号: US07522756B2公开(公告)日: 2009-04-21
- 发明人: Clifford Bueno , Elizabeth Lokenberg Dixon , Walter Vincent Dixon , Forrest Frank Hopkins , Michael Robert Hopple , Brian Walter Lasiuk , Ronald Cecil McFarland , August David Matula , Robert James Mitchell, Jr. , Kevin Layne Moermond , Gregory Alan Mohr
- 申请人: Clifford Bueno , Elizabeth Lokenberg Dixon , Walter Vincent Dixon , Forrest Frank Hopkins , Michael Robert Hopple , Brian Walter Lasiuk , Ronald Cecil McFarland , August David Matula , Robert James Mitchell, Jr. , Kevin Layne Moermond , Gregory Alan Mohr
- 申请人地址: US NY Niskayuna
- 专利权人: General Electric Company
- 当前专利权人: General Electric Company
- 当前专利权人地址: US NY Niskayuna
- 代理商 Penny A. Clarke
- 主分类号: G06K9/00
- IPC分类号: G06K9/00
摘要:
A method, system and apparatus for processing a radiographic image of a scanned object is disclosed. A pixel offset correction is performed in integer format on the radiographic image using saturation arithmetic to produce an image in integer format with any negative corrected values clipped to a value of zero. The resulting pixels are converted to floating point format and the converted pixels are multiplied by a gain factor. Optionally the resulting pixels are recursively averaged with previous results. The resulting pixels are converted to integer format and the converted pixel values are clamped to a maximum value using saturation arithmetic. Non-functional pixel correction is performed in integer format and the resulting pixel values are clamped to a maximum value using saturation arithmetic. An optional processing path replaces the recursive average by a linear average. The resulting pixel values are optionally filtered to enhance features of interest. The resulting pixel value is mapped in integer format to a palette index to establish an output pixel intensity having one of many intensity levels. The optional processing is controlled through the hardware interface of a real-time image controller as images are acquired.
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