[ITK-users] [ITK] MattesMutualInformationImageToImageMetric: Joint PDF summed to zero

[Bradley Lowekamp]

Hello,

This is likely caused by the images no longer overlapping sufficiently.

You didn't indicate how you modified the example. So it's difficult to specifically help.

Check your transform, parameter, scales, and initalRadius for the optimizer or similar optimizer parameter.

Brad


On Jul 2, 2014, at 5:43 PM, Gabriel A. Giménez <gabrielgimenez85 at gmail.com> wrote:

> Hi everyone, first of all, sorry for my bad English.
> 
> I modified the ImageRegistration8 example for use the
> itkOnePlusOneEvolutionaryOptimize and
> itkMattesMutualInformationImageToImageMetric like in the ImageRegistration11
> example.
> Can help me with this error ?
> 
> Thanks.
> 
> 1   -0.536085   [0, 0, 0, 2.4210718274608496, -15.626697762130291,
> 0.24074437575656304]
> 2   -0.536085   [0, 0, 0, 2.4210718274608496, -15.626697762130291,
> 0.24074437575656304]
> 3   -0.536085   [0, 0, 0, 2.4210718274608496, -15.626697762130291,
> 0.24074437575656304]
> ExceptionObject caught !
> 
> itk::ExceptionObject (0xa23c098)
> Location: "itk::MattesMutualInformationImageToImageMetric<TFixedImage,
> TMovingImage>::MeasureType
> itk::MattesMutualInformationImageToImageMetric<TFixedImage,
> TMovingImage>::GetValue(itk::MattesMutualInformationImageToImageMetric<TFixedImage,
> TMovingImage>::ParametersType&) const [with TFixedImage = itk::Image<float,
> 3u>, TMovingImage = itk::Image<float, 3u>,
> itk::MattesMutualInformationImageToImageMetric<TFixedImage,
> TMovingImage>::MeasureType = double,
> itk::MattesMutualInformationImageToImageMetric<TFixedImage,
> TMovingImage>::ParametersType = itk::OptimizerParameters<double>]" 
> File:
> /media/datos/FP-UNA/tesis/implementacion/qtCreator/InsightToolkit-4.5.1/Modules/Registration/Common/include/itkMattesMutualInformationImageToImageMetric.hxx
> Line: 546
> Description: itk::ERROR:
> MattesMutualInformationImageToImageMetric(0xa22f070): Joint PDF summed to
> zero
> Image (0xa23bc10)
>  RTTI typeinfo:   itk::Image<double, 2u>
>  Reference Count: 2
>  Modified Time: 437
>  Debug: Off
>  Object Name: 
>  Observers: 
>    none
>  Source: (none)
>  Source output name: (none)
>  Release Data: Off
>  Data Released: False
>  Global Release Data: Off
>  PipelineMTime: 0
>  UpdateMTime: 0
>  RealTimeStamp: 0 seconds 
>  LargestPossibleRegion: 
>    Dimension: 2
>    Index: [0, 0]
>    Size: [20, 20]
>  BufferedRegion: 
>    Dimension: 2
>    Index: [0, 0]
>    Size: [20, 20]
>  RequestedRegion: 
>    Dimension: 2
>    Index: [0, 0]
>    Size: [20, 20]
>  Spacing: [15.9375, 15.625]
>  Origin: [0, 0]
>  Direction: 
> 1 0
> 0 1
> 
>  IndexToPointMatrix: 
> 15.9375 0
> 0 15.625
> 
>  PointToIndexMatrix: 
> 0.0627451 0
> 0 0.064
> 
>  Inverse Direction: 
> 1 0
> 0 1
> 
>  PixelContainer: 
>    ImportImageContainer (0xa23bd58)
>      RTTI typeinfo:   itk::ImportImageContainer<unsigned long, double>
>      Reference Count: 1
>      Modified Time: 438
>      Debug: Off
>      Object Name: 
>      Observers: 
>        none
>      Pointer: 0xa4b4880
>      Container manages memory: true
>      Size: 400
>      Capacity: 400
> 
> 
> 
> 
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