公开(公告)号：EP3098594A4

公开(公告)日：2017-08-30

申请号：EP15741002

申请日：2015-01-23

申请人： JOB CORP

发明人： YAMAKAWA TSUTOMU ,  YAMAMOTO SHUICHIRO ,  YAMASAKI MASASHI

IPC分类号： G01N23/04 ,  A61B6/02 ,  A61B6/12 ,  A61B6/14 ,  G01T7/00

CPC分类号： G01N23/046 ,  A61B6/02 ,  A61B6/12 ,  A61B6/14 ,  G01N2223/401 ,  G01N2223/619 ,  G01N2223/643

摘要： Foreign matter present inside an object and the like are detected with higher resolution and higher reliability. Frame data of a plurality of tomographic planes that are parallel in the scan direction and set in a space between an X-ray tube (31 and an X-ray detecting unit (22) is generated based on detected frame data. The generation of frame data is performed based on the fan-shaped spreading of an X-ray beam and the differences in position in a height direction between the plurality of tomographic planes from a detection surface. Tomographic images are respectively generated from the frame data of the plurality of tomographic planes based on a laminography technique. Edge information based on the changes in pixel values in each tomographic image is calculated for each pixel. A three-dimensional distribution of the edge information is generated. A search is performed on the edge information in a direction passing through the plurality of tomographic planes. As a result of the search, pixels indicating a maximum value in the edge information are detected. Only pixels in the plurality of tomographic images that positionally correspond to the detected pixels are combined into a single composite image.

摘要翻译： 物体内存在的异物等以更高的分辨率和更高的可靠性进行检测。 基于检测到的帧数据生成在扫描方向上平行且设置在X射线管（31）与X射线检测部（22）之间的空间内的多个断层面的帧数据​​，生成帧 基于X射线束的扇形扩展和来自检测表面的多个断层平面之间的高度方向上的位置差来执行数据，根据多个断层摄影的帧数据分别生成断层图像 基于层析技术来计算边缘信息，基于各层析图像中的像素值的变化的边缘信息被计算用于每个像素，生成边缘信息的三维分布，沿着经过的方向对边缘信息进行搜索 通过多个断层面进行检索，作为检索的结果，检测表示边缘信息中的最大值的像素，仅检测多个层析图像中的像素 在位置上对应于检测到的像素的hic图像被组合成单个合成图像。