[Insight-users] Performance regression in ITK + gdcm 2.0 reading DICOM JPEG files

[Roger Bramon Feixas]

Hi Mathieu,

Thanks for your attention. I answer your questions:

1. What is your platform ?
I used a Windows XP 32bits to do the test. However, this behaviour also
occurs in Mac OS X platform.

2. What is your compiler ?
All ITK versions were compiled with Visual Studio 2008 and we downloaded
GDCM 2.0.14 binary from http://gdcm.sourceforge.net

3. What are your compiler option (eg. I hope you do not run bench
without CMAKE_BUILD_TYPE:Release) ?
RelWithDebInfo

4. Where is the dataset used ?
Dataset 5 is from OSIRIX: http://pubimage.hcuge.ch:8080/DATA/CALIX.zip
-> CALIX/CT1
abdomen/D30MN BILISCOPIN
We are really interested to improve the time needed to load jpeg lossless
datasets. The jpeg lossless datasets used are non-anonymized datasets, I
will try to anonymize them if you want them.

5. Where is the source code used ?
I attach it in this mail.


Thanks!

Roger

On Mon, May 17, 2010 at 10:44 PM, Mathieu Malaterre <
mathieu.malaterre at gmail.com> wrote:

> Hi Roger,
>
>  This is a very interesting post !
>
> On Thu, May 13, 2010 at 11:00 PM, Roger Bramon Feixas
> <rogerbramon at gmail.com> wrote:
> > Hi,
> > Recently we updated our ITK version from ITK 3.16 to ITK 3.18 and we
> decided
> > to relink ITK with system GDCM 2.0. After some tests, we concluded ITK
> > 3.18+GDCM 2.0 is faster than ITK 3.18 reading DICOM Little Endian files,
> > however ITK 3.18+GDCM 2.0 is rather slower reading DICOM JPEG files. I
> > attach a PDF file which is a time comparison of ITK 2.8, 3.16, 3.18 and
> > 3.18+GDCM2.0 versions.
> > I don't know if it's just a GDCM problem or if it depends on how ITK uses
> > GDCM.
>
>                        GDCM             Reading
> UpdateOutput-        UpdateLargest-
> Data       ITK version version          directory         Information
>        PossibleRegion
>
>
>       5           2,8            1,2           642
>  6                  20153
>                  3,16            1,2           547
>  0                  25121
>                  3,18            1,2           547
>  0                  25124
>                  3,18              2         25297
> 187                  71437
>
>
>
> Data     Transfer syntax                Modality          Files
>        Size (MB)
>
>       5 JPEG 2000                      CT
> 243                     23
>
>
>
>  Could you please post a little bit more on :
> 1. What is your platform ?
> 2. What is your compiler ?
> 3. What are your compiler option (eg. I hope you do not run bench
> without CMAKE_BUILD_TYPE:Release) ?
> 4. Where is the dataset used ?
> 5. Where is the source code used ?
>
> Thanks a bunch !
> --
> Mathieu
>
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