[Insight-users] AddObserver + JAVA

[Oliveira Marcelo]

 Hi Li and users!!!

Taxs a lot for your replay, this help me a lot!!!
I´d been learn a lot about JNI. But i think that a
need examples how can i use JNI with ITK. Do you or
anyone could show me an example of ITK JAVA and JNI.

tanx a lot

best regards



--- "Li, George (NIH/NCI)" <ligeorge at mail.nih.gov>
escreveu: 
> Oliveira:
> 
> You can always use JNI to communicate your JAVA code
> with ITK C++ code. It might be a good option for you
> to by-pass the hurdle for the translation, which may
> be endless to keep up with their endless releases!!!
> 
> Regard.
> 
> George
> 
> 
> -----Original Message-----
> From: Oliveira Marcelo
> [mailto:marceloitk at yahoo.com.br] 
> Sent: Tuesday, January 25, 2005 1:57 PM
> To: insight-users at itk.org
> Subject: [Insight-users] AddObserver + JAVA
> 
> 
> Hi Users !!!
> 
> Im try to write the MultiResImageRegistration1.cxx
> in
> JAVA, but i dont know how can work with AddObserver.
> 
> Please, is possible in the new itk version put more
> itk-java examples ? ill apreciated !!!
> 
> tanx a lot for your help and time !!!
> best regards
> 
> a piece of my code:
> 
> //*****  MAIN CODE  ************************
> 
> optimizer.AddObserver( new itkIterationEvent(), new
> CommandIterationUpdate() );
>          
> registration.AddObserver(new itkIterationEvent(),
> new
> RegistrationInterfaceCommand());
>         
>                  
> registration.SetNumberOfLevels( 3 );        
>           
> try 
> { 
>              
>    registration.StartRegistration(); 
>             
> } 
>  catch(Exception e)
> {
>    System.out.println("Error");
> }
> 
>
//***************************************************
> //****   CommandIterationUpdate Class
> //**************************************************
> 
> public class CommandIterationUpdate extends
> itkJavaCommand{
>  
>           
> public void Execute(final itkObject object, final
> itkEventObject event) {
>                
>         itkRegularStepGradientDescentOptimizer
> optimizer;  
>         optimizer=
> (itkRegularStepGradientDescentOptimizer) object;
>         
>          itkIterationEvent it = new
> itkIterationEvent(); 
> 
>           if( (event) ==  (it)  )
>           {
>               return;
>           }
>         
>  System.out.print(optimizer.GetCurrentIteration());
>             System.out.print(optimizer.GetValue());
>            
> System.out.print(optimizer.GetCurrentPosition());
>          
>     }
>     
> }
> 
>
//***************************************************
> //****   RegistrationInterfaceCommand Class
> //**************************************************
> public class RegistrationInterfaceCommand extends
> itkJavaCommand{
>   
> private itkMultiResolutionImageRegistrationMethod
> registration; 
>        
> public void Execute(itkObject object,final
> itkEventObject event)
>    {
>            
>        itkIterationEvent it = new
> itkIterationEvent();
> 
> 
>           if( (event) ==  (it)  )
>           {
>               return;
>           }
>           
>                 
>        itkRegularStepGradientDescentOptimizer
> optimizer;       
>        itkMultiResolutionImageRegistrationMethodF3F3
> reg;
>       
>    
>        reg = 
> (itkMultiResolutionImageRegistrationMethodF3F3)
> object;
>      
>       
>        optimizer =
> (itkRegularStepGradientDescentOptimizer)
> reg.GetOptimizer();  
>           
>        if( reg.GetCurrentLevel() == 0 )
>        {
>             
>               optimizer.SetMaximumStepLength( 16.00
> );
>  
>               optimizer.SetMinimumStepLength( 2.5 );
>        }
>        else
>        {
>              optimizer.SetMinimumStepLength(
> optimizer.GetCurrentStepLength() );
>              optimizer.SetMinimumStepLength(
> optimizer.GetMinimumStepLength()/10.00 );
>           
>            
>        }
>           
>              
>    }
>     
> }
>            
> 
> 
> 	
> 	
> 		
>
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