<p>A method (500), system and apparatus for processing a radiographic image of a scanned object is disclosed. A pixel offset correction is performed (510) 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 (520) to floating point format and the converted pixels are multiplied (530) by a gain factor. Optionally the resulting pixels are recursively averaged with previous results. The resulting pixels are converted (550) to integer format and the converted pixel values are clamped to a maximum value using saturation arithmetic Non-functional pixel correction (560) 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 (580) to enhance features of interest. The resulting pixel value is mapped (570) 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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申请公布号
EP1484717(A3)
申请公布日期
2012.11.07
申请号
EP20040253176
申请日期
2004.05.28
申请人
GENERAL ELECTRIC COMPANY
发明人
BUENO, CLIFFORD;DIXON, WALTER;HOPPLE, MICHAEL;DIXON, ELIZABETH;HOPKINS, FORREST;LASIUK, BRIAN;MCFARLAND, RONALD;MITCHELL, ROBERT JR.;MOHR, GREGORY;MATULA, AUGUST;MOERMOND, KEVIN