[Castor-users] Benchmark query

[tmerlin]

Nothing seems to be wrong in the slice presented in the screenshot.

Maybe the best would be to look at the image generated from the 
difference between the reference image and the image reconstructed by 
your system, and check where do the differences come from.



On 17/07/2017 15:05, Kajal Aggarwal wrote:
> Hello,
>
> Thank you for the information on the output image files. I finally 
> managed to open the files.
>
> I am working on Linux and the compiler used is "gcc version 4.7.2 
> (Debian 4.7.2-5)". I am pasting below a screen shot of my image obtained.
> Also, this is the only benchmark, I have tried.
> Inline image 1
>
> On Mon, Jul 17, 2017 at 11:40 AM, tmerlin 
> <Thibaut.Merlin at univ-brest.fr <mailto:Thibaut.Merlin at univ-brest.fr>> 
> wrote:
>
>     Hi Kajal,
>
>     Both reference and output images are saved in interfile. You
>     should be able to open it with any image editor supporting this
>     format. The .img file is a .raw image of 112x112x109 voxels of
>     2.0x2.0x2.027 mm.
>
>     Regarding your results, several users with recent compilers
>     experienced similar issues with the benchmark. The difference
>     values weren't as high as in your results though. Could you tell
>     us what is your computer hardware/OS ? And what is your compiler ?
>     Is there any artifact in the generated image ?
>
>     Did you try the other benchmarks as well ?
>
>     Best regards,
>
>     Thibaut
>
>
>     On 13/07/2017 09:50, Kajal Aggarwal wrote:
>>     Hello everyone,
>>
>>     I am running a benchmark "run_benchmark_pet_histogram.sh",
>>     downloaded from the Castor site. It generates two files,
>>     "benchmark_pet_histogram_challenger_it2.hdr" and
>>     "benchmark_pet_histogram_challenger_it2.img" and it compares the
>>     files generated with the reference files. I am copying the
>>     results below. Can anyone please explain me how can I open the
>>     two files generated and why the results of the benchmark PET are
>>     not overlapping with the reference files.
>>
>>
>>
>>
>>     Check benchmark results (compare reconstructed image with the
>>     reference one)
>>     ==================================================================================================================
>>       --> !!!!! The mean relative difference over the whole image is
>>     -0.0459751 !
>>                 It is supposed to be between -5e-07 and 5e-07 !
>>       --> !!!!! The mean relative difference for each slice has a
>>     maximum absolute value of 2.76492 !
>>                 It is supposed to be between -5e-05 and 5e-05 !
>>                 The test failed for 104 slices !
>>       --> !!!!! The maximum absolute relative difference is 2.71219 !
>>                 It is supposed to be below 0.0001 !
>>
>>       --> !!!!! Benchmark tests failed (3 problems found) !
>>                 Double check all what you have done first. Then email
>>     the mailing list.
>>
>>
>>     -- 
>>     Thanking you.
>>     Yours sincerely,
>>     Kajal Aggarwal
>>
>>
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>
>     -- 
>     Thibaut MERLIN -- PhD
>
>     Docteur en Imagerie Médicale au Laboratoire de Traitement de l'Information Medicale (LaTIM - INSERM UMR 1101)
>     Bâtiment 1
>     CHRU Morvan - 2, Av. Foch
>     29609 Brest CEDEX - FRANCE
>     Tel: 06.75.12.24.90
>
>     _______________________________________________ Castor-users
>     mailing list Castor-users at lists.castor-project.org
>     <mailto:Castor-users at lists.castor-project.org>
>     http://lists.castor-project.org/listinfo/castor-users
>     <http://lists.castor-project.org/listinfo/castor-users> 
>
> -- 
> Thanking you.
> Yours sincerely,
> Kajal Aggarwal
-- 
Thibaut MERLIN -- PhD

Docteur en Imagerie Médicale au Laboratoire de Traitement de l'Information Medicale (LaTIM - INSERM UMR 1101)
Bâtiment 1
CHRU Morvan - 2, Av. Foch
29609 Brest CEDEX - FRANCE
Tel: 06.75.12.24.90
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