发明名称 |
Pattern noise correction for pseudo projections |
摘要 |
Correcting pattern noise projection images includes acquiring a set of projection images with an optical tomography system including a processor, where each of the set of projection images is acquired at a different angle of view. A threshold is applied to each projection image produce a set of threshold images. Each threshold image may optionally be dilated to produce a set of dilated images that are summed to form an ensemble image. Each of the dilated images is processed to produce a set of binary images. The set of binary images are summed to form an ensemble mask. The ensemble image is divided by the ensemble mask to yield a background pattern noise image. Each projection image is multiplied by a scaling factor and divided by the background pattern noise to produce a quotient image that is filtered to produce a noise corrected projection image.
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申请公布号 |
US8090183(B2) |
申请公布日期 |
2012.01.03 |
申请号 |
US20090403231 |
申请日期 |
2009.03.12 |
申请人 |
MEYER MICHAEL G.;HAYENGA JON W.;ABBOTT THOMAS M.;STEINHAUER DAVID E.;VISIONGATE, INC. |
发明人 |
MEYER MICHAEL G.;HAYENGA JON W.;ABBOTT THOMAS M.;STEINHAUER DAVID E. |
分类号 |
G06K9/18 |
主分类号 |
G06K9/18 |
代理机构 |
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