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. |
申请公布号 |
EP2405816(B1) |
申请公布日期 |
2014.10.01 |
申请号 |
EP20100751376 |
申请日期 |
2010.03.10 |
申请人 |
VISIONGATE, INC. |
发明人 |
MEYER, MICHAEL;HAYENGA, JON;ABBOTT, THOMAS;STEINHAUER, DAVID |
分类号 |
G06T5/00;A61B5/1455;G06T11/00;H04N5/365 |
主分类号 |
G06T5/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|