发明名称 |
Method for contrast-enhancement of digital portal images |
摘要 |
A method for enhancing the image contrast of digital portal images for presentation on an output medium comprising: providing an input digital portal image having radiation and collimation fields; locating and labeling said radiation and collimation fields to produce labeled radiation and labeled collimation field images; designing a tone scale curve to display the image inside the radiation field using the full dynamic range of the output medium; applying said tone scale curve to the input digital portal image to produce a tone-scaled radiation field image, designing a tone scale curve to display the image outside the radiation field using the full dynamic range of said output medium; applying said tone scale curve to the input digital portal image to produce a tone-scaled collimation field image; enhancing the image contrast of said tone-scaled radiation field image and said tone-scaled collimation field image; combining said enhanced images using the labeled radiation and collimation field images; and black-surrounding the collimation field to produce a contrast enhancement output image which can be presented on said output medium. <IMAGE> |
申请公布号 |
EP1316919(A2) |
申请公布日期 |
2003.06.04 |
申请号 |
EP20020079598 |
申请日期 |
2002.11.04 |
申请人 |
EASTMAN KODAK COMPANY |
发明人 |
YOUNG, SUSAN S.;MOORE, WILLIAM E.;FOOS, DAVID H. |
分类号 |
A61B6/00;G06T1/00;G06T3/00;G06T5/00;G06T7/60 |
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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