[Insight-users] Mattes Mutual Information implementation

[brian avants]

http://www.itk.org/Doxygen43/html/search.php?query=mattes

gives you

http://www.itk.org/Doxygen43/html/classitk_1_1MattesMutualInformationImageToImageMetricv4.html


brian




On Wed, Mar 13, 2013 at 9:37 AM, Tim Allman <dr.tim.allman at gmail.com> wrote:

>  My apologies for not reading the documentation.  :-[
>
> However, the v4 version,
> JointHistogramMutualInformationImageToImageMetricv4, truly is undocumented.
> What is its thread safety?
>
> Thanks,
> Tim
>
>
> On 13-03-12 05:33 PM, Christopher Mullins wrote:
>
> *"This class in not thread safe due the private data structures used to
> the store the sampled points and the marginal and joint pdfs." [1]*
> *
> *
> *[1] *
> http://www.itk.org/Doxygen314/html/classitk_1_1MattesMutualInformationImageToImageMetric.html
>
>
> On Tue, Mar 12, 2013 at 4:50 PM, Rick Frank <rfrank at dominionsw.com> wrote:
>
>>  What is the reason it is not thread safe?
>>
>> Rick Frank
>>
>> On Mar 12, 2013, at 2:10 PM, "Tim Allman" <dr.tim.allman at gmail.com>
>> wrote:
>>
>>   I have been living with mutual information day and night for  a while.
>> You can get more information about Normalised MI in D. Rueckert et al. IEEE
>> Trans. Med. Imag., 18 712 (1999) and Mattes MI in Mattes et al IEEE Trans.
>> Med. Imag., 22 120-128 (2003) and references contained therein.
>>
>> If you understand the methods in the papers, the ITK classes start to
>> make sense in spite of the poor documentation. It is undocumented but true
>> that Mattes MI is not thread safe so you must set the number of threads it
>> uses to 1. I don't know about the other.
>>
>> Tim
>>
>> On 13-03-12 01:26 PM, Pedro Morais wrote:
>>
>> Good afternoon,
>>
>>  I'm working with Mattes Mutual Information to register a MRI sequence.
>> Someone can send me some information about Mattes Mutual Information
>> implementation, there are a lot of parameters but I think that the
>> documentation is not enough.
>> I don't understand what is the difference between the Normalized Mutual
>> Information and Mattes Mutual Information. I need to decide between the two
>> methods, but I need to know the advantagens of each technique.
>>
>>  Thanks for the help.
>>  --
>> Kind Regards,
>>
>>  Pedro Morais
>>
>>
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>> --
>> Tim Allman, Ph.D.
>> 35 Margaret Street,
>> Guelph Ontario N1E 5R6
>> Canada
>>
>>    <dr_tim_allman.vcf>
>>
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>
>
>  --
> Christopher Mullins
> R&D Engineer
> Kitware Inc.,
> 919.869.8871
>
>
> --
> Tim Allman, Ph.D.
> 35 Margaret Street,
> Guelph Ontario N1E 5R6
> Canada
>
>
> _____________________________________
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>
> Visit other Kitware open-source projects at
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>
> Kitware offers ITK Training Courses, for more information visit:
> http://www.kitware.com/products/protraining.php
>
> Please keep messages on-topic and check the ITK FAQ at:
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