Description: Improve accuracy of registration
 reduce minimum step length and gradient tolerance in order to
 stabelize the registration test run by using this program.
Author: Gert Wollny <gw.fossdev@gmail.com>
Forwarded: yes
Last-Update: 2016-02-21

--- a/Examples/RegistrationITKv3/MultiResImageRegistration1.cxx
+++ b/Examples/RegistrationITKv3/MultiResImageRegistration1.cxx
@@ -221,7 +221,7 @@
     if ( registration->GetCurrentLevel() == 0 )
       {
       optimizer->SetMaximumStepLength( 16.00 );
-      optimizer->SetMinimumStepLength( 0.01 );
+      optimizer->SetMinimumStepLength( 0.005 );
       }
     else
       {
@@ -489,7 +489,7 @@
 
   optimizer->SetNumberOfIterations( 200 );
   optimizer->SetRelaxationFactor( 0.9 );
-
+  optimizer->SetGradientMagnitudeTolerance( 1e-6 );
 
   // Create the Command observer and register it with the optimizer.
   //