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RADIATION IMAGING APPARATUS AND IMAGE PROCESSING METHOD
专利权人:
FUJIFILM Corporation
发明人:
Atsushi HASHIMOTO,Takuji TADA,Dai MURAKOSHI
申请号:
US14057836
公开号:
US20140044234A1
申请日:
2013.10.18
申请国别(地区):
US
年份:
2014
代理人:
摘要:
An X-ray imaging apparatus comprises a first grid, a second grid, and an X-ray image detector. The first grid passes X-rays emitted from an X-ray source and produces a first periodic pattern image. The second grid opposes the first grid. The second grid partly blocks the first periodic pattern image and produces a second periodic pattern image with moiré fringes. The X-ray image detector detects the second periodic pattern image and produces image data. The X-ray image detector has pixels arranged in two dimensions in X and Y directions. The M pixels arranged in the Y direction form one group. The group is shifted in the Y direction by the number of the pixels less than M each time. A phase of an intensity modulated signal, composed of pixel values of the pixels in the each shifted group, is calculated. Thereby a differential phase image is produced.
来源网站:
中国工程科技知识中心
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http://www.ckcest.cn/home/

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