发明名称 |
X-RAY IMAGE PHOTOGRAPHING APPARATUS AND IMAGE PROCESSOR |
摘要 |
PROBLEM TO BE SOLVED: To remove a grid shade sufficiently without deteriorating information useful for diagnosis from an original image including a grid shadow difficult to be removed.SOLUTION: An X-ray image photographing apparatus includes: a filter processing part 12c which uses a smoothing filter having a square kernel longer in the long axis direction of a grid panel shade with respect to a wavelet conversion coefficient selected from among a group of wavelet conversion coefficients to perform filter processing in accordance with a long axis direction of the grid plate shade on an original image attributed to the grid panel a grid on the front surface of a detector has and generates a wavelet conversion coefficient after the filter processing; an inverse wavelet conversion processing part 12d which uses only the wavelet conversion coefficient filter processed and generates an extraction image from which a grid panel shade is extracted; a difference processing part 12e for generating a difference image by performing difference processing between the original image and the extraction image to generate a difference image; and a display processing part 125 for performing display processing of the difference image. |
申请公布号 |
JP2011010829(A) |
申请公布日期 |
2011.01.20 |
申请号 |
JP20090157045 |
申请日期 |
2009.07.01 |
申请人 |
TOSHIBA CORP;TOSHIBA MEDICAL SYSTEMS CORP |
发明人 |
KOBAYASHI YOSHIMASA |
分类号 |
A61B6/00;A61B6/06;G06T1/00;G06T5/00 |
主分类号 |
A61B6/00 |
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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