-
公开(公告)号:DE602004031551D1
公开(公告)日:2011-04-07
申请号:DE602004031551
申请日:2004-12-10
Applicant: PHILIPS INTELLECTUAL PROPERTY
Inventor: CARLSEN INGWER , NETSCH THOMAS , FRANZ ASTRID
IPC: G06T3/00
-
公开(公告)号:WO2007072451A3
公开(公告)日:2008-02-14
申请号:PCT/IB2006054991
申请日:2006-12-21
Applicant: PHILIPS INTELLECTUAL PROPERTY , KONINKL PHILIPS ELECTRONICS NV , FRANZ ASTRID , CARLSEN INGWER-CURT
Inventor: FRANZ ASTRID , CARLSEN INGWER-CURT
IPC: G06T7/00
CPC classification number: G06K9/6211 , G06K9/32 , G06T7/33
Abstract: A point-based elastic registration method for registering a first image and a second image. A number of prominent feature are identified within the first image using a SIFT algorithm (S1). Then, a single control point is placed (S2) with the source image region at the most prominent SIFT feature and optimal parameter settings in respect thereof are determined (S3) for performing elastic deformation (S4) in respect of the first image so as to optimise a similarity measure. Additional control points are then added (S6) one-by-one at the next most prominent SIFT features, and the elastic deformation process repeated each time (S8) in respect of the new control point set, until a predetermined stopping criterion is met, e.g. the resultant improvement in the similarity measure no longer exceeds some predetermined threshold value. Thus, a high speed, high quality registration method is provided without having to specify the number of control points initially.
Abstract translation: 一种用于登记第一图像和第二图像的基于点的弹性登记方法。 使用SIFT算法在第一图像内识别出许多突出特征(S1)。 然后,放置单个控制点(S2),源图像区域处于最突出的SIFT特征,并且确定相对于第一图像执行弹性变形(S4)的最佳参数设置(S3),以便 优化相似性度量。 然后在下一个最突出的SIFT特征中逐个添加附加的控制点(S6),并且相对于新的控制点集合每次重复(S8)弹性变形过程,直到满足预定的停止标准, 例如 所得到的相似性度量的改善不再超过某个预定阈值。 因此,提供高速,高质量的登记方法,而不必首先指定控制点的数量。
-