Hi, It has been a long time since I played with the registration framework, so I've forgotten how to deal with these issues (or never knew).
I'm correcting a misaligned stack using 2d, pairwise, registration. I have an old tool based on DeformableRegistration15 in itk 3.20 and a newer one based on ImageRegistration7 in the itk 4.2 examples. The latter works well for a large proportion of the stack and suddenly produces a result with a very large incorrect angle. It produces that incorrect angle after 1 iteration. The mean squared metric is used in this example. Switching to Mattes MI without changing any parameters produces crazy results. Are there rules of thumb for setting optimizer scales and step sizes based on the expected ranges of metric values and image sizes. Thanks _______________________________________________ Powered by www.kitware.com Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Kitware offers ITK Training Courses, for more information visit: http://kitware.com/products/protraining.php Please keep messages on-topic and check the ITK FAQ at: http://www.itk.org/Wiki/ITK_FAQ Follow this link to subscribe/unsubscribe: http://www.itk.org/mailman/listinfo/insight-developers
