[Insight-users] INSIGHT JOURNAL: Test of Scattered Data Interpolation with Multilevel B-Splines provided by Nick

[Ni Dong]

Dear Luis and Nick Tustison,

I have posted a review to Insight Journal. Thanks for Luis's reminding.

In the meanwhile, I think there is some difference between the test and the 
original result. I wonder if Nick did some postprocessing on the result, 
such as intensity remapping, which is possibly the reason of the difference. 
Could Nick give some suggestions about the difference? Thanks firstly.

In my opition, image registraion is one of the most important topic of ITK. 
It is more preferable to generate a new class like kernaltranform based on 
this B-Spline interpolation algorithm.

I plan to apply this algorithm to deformable registration based on two sets 
of correlated landmarks. I will post my results and codes a little later.

Thanks again for your attention.

Best Regards
Ni Dong
Computer Science and Engineering Dept., The Chinese University of Hong Kong
----- Original Message ----- 
From: "Luis Ibanez" <luis.ibanez at kitware.com>
To: "Ni Dong" <dni at cse.cuhk.edu.hk>
Cc: <insight-users at itk.org>
Sent: Wednesday, July 09, 2008 12:43 AM
Subject: INSIGHT JOURNAL: Test of Scattered Data Interpolation with 
Multilevel B-Splines provided by Nick


>
>
> Hi Ni
>
>
>             Thanks a lot for posting this review !
>
>
> This is *exactly* what we hope readers will do with *every single*
> paper in the INSIGHT JOURNAL:
>
>
>   1) Download the code
>   2) Build it
>   3) Attempt to reproduce the paper
>   4) Use the code with their own images
>   5) Modify and improve the code
>   6) Report back to the community
>
>
> It is great to see a correct usage of the INSIGHT JOURNAL in action.
>
>
> You may find interesting to know that Nick's class was recently added
> to the Code/Review directory of ITK, and that it will be included in
> the release of ITK 3.8. (note that given that the class will be in the
> Review directory, its API may still change during releases).
>
>
>
> 1) One question:
>
>   Did you consider that the differences between your results
>   and the ones posted in the paper were significant ?
>
>   Can they be attributed simply to computation precision ?
>   and be disregarded ?
>
>   or do you think that something needs to be adjusted in the class ?
>
>
>
> 2) One Humble Request:
>
>   Could you please copy/past the text of your email as a review
>   to Nick's paper in the Insight Journal ?
>
>   It will be great to have this text available for the readers
>   who take a look at that paper.
>
>
>
> ...and, of course, Thanks to Nick Tustison for submitting a paper
> that lends itself to *real reproducibility verification*.
>
>
>
>
>  Thanks !
>
>
>
>      Luis
>
>
>
> ----------------
> Ni Dong wrote:
>> Dear all,
>>
>> I have downloaded the code from http://hdl.handle.net/1926/140 provided
>> by Nick Tustison . The codes were compiled using VC7. Test1 example(also
>> given by Nick) was executed, which was used to interpolate the 2D scalar
>> images.
>>
>> The input image is "OriginalT2.png" also given by Nick. I just modified
>> the codes a little.  In the original program, the output image is
>> "float" type. I just rescaled the gray from 0 to 255 and modified the
>> output image as "unsigned char" type.
>>
>> The result is a little different from the one given by Nick. Attached
>> please find the test result. The original data and  result can be found
>> from http://hdl.handle.net/1926/140
>>
>> The parameters used in my test are as follows:
>>
>> Splineorder = 4;
>> Initial Numverofcontropoints = 5*5;
>> Numberoflevels = 10;
>> which is same with the ones presented in Nick's paper.
>>
>> Thank you very much.
>>
>> Best Regards
>> Ni Dong
>> Computer Science and Engineering Dept., The Chinese University of Hong 
>> Kong
>>
>>
>> ------------------------------------------------------------------------
>>
>>
>> ------------------------------------------------------------------------
>>
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