Yves Martel wrote:

> The data is (as expected) compressed and placed in groups 7F0x (as in
> other SPI compressions) .
> Now, since all these compression tags have be retired, one has to
> assume that at some point they where documented?

The ACR/NEMA compression supplement is available from
ftp://medical.nema.org/MEDICAL/Dicom/1989/PS2_1989.pdf

Regards,
Marco Eichelberg

On Oct 23, 4:01*pm, Marco Eichelberg
wrote:
> Yves Martel wrote:
> > The data is (as expected) compressed and placed in groups 7F0x (as in
> > other SPI compressions) .
> > Now, since all these compression tags have be retired, one has to
> > assume that at some point they where documented?
>
> The ACR/NEMA compression supplement is available fromftp://medical.nema.org/MEDICAL/Dicom/1989/PS2_1989.pdf
>
> Regards,
> Marco Eichelberg

Yves,

Don't forget to read this post too:

http://groups.google.fr/group/comp.p...46923a89fc0bdb

I think you'll find some help in D. Clunie tools (I admit I was not
able to get anything out of the files though)

2cts

On Thu, 23 Oct 2008 08:58:58 -0700 (PDT), Mathieu Malaterre
wrote:

>On Oct 23, 4:01*pm, Marco Eichelberg
>wrote:
>> Yves Martel wrote:
>> > The data is (as expected) compressed and placed in groups 7F0x (as in
>> > other SPI compressions) .
>> > Now, since all these compression tags have be retired, one has to
>> > assume that at some point they where documented?
>>
>> The ACR/NEMA compression supplement is available fromftp://medical.nema.org/MEDICAL/Dicom/1989/PS2_1989.pdf
>>
>> Regards,
>> Marco Eichelberg
>
>Yves,
>
> Don't forget to read this post too:
>
>http://groups.google.fr/group/comp.p...46923a89fc0bdb
>
> I think you'll find some help in D. Clunie tools (I admit I was not
>able to get anything out of the files though)
>
>2cts

Thanks Marco and Merci Mathieu

That was exactly what I needed!

Though you seem to mention that David's tool support the old NEMA
compression? I must admut I didn't find any referenec to that in his
code (but I didn't search that much...). Do you support it David?

Anyway, I have now added the support for the SIENET Lempel-Ziv images
to my programs.

However, I noticed from the doc that a LOT of compressions are
possible.

Up to now, I have seen "HUFFMAN" from Siemens CT, and "LEMPEL-ZIV"
from SIENET stations, but does anybody have sample images using the
old NEMA compression that is not one of these?

Yves

On Oct 27, 2:53 pm, Yves Martel wrote:
> On Thu, 23 Oct 2008 08:58:58 -0700 (PDT), Mathieu Malaterre
>
>
>
> wrote:
> >On Oct 23, 4:01 pm, Marco Eichelberg
> >wrote:
> >> Yves Martel wrote:
> >> > The data is (as expected) compressed and placed in groups 7F0x (as in
> >> > other SPI compressions) .
> >> > Now, since all these compression tags have be retired, one has to
> >> > assume that at some point they where documented?
>
> >> The ACR/NEMA compression supplement is available fromftp://medical.nema.org/MEDICAL/Dicom/1989/PS2_1989.pdf
>
> >> Regards,
> >> Marco Eichelberg
>
> >Yves,
>
> > Don't forget to read this post too:
>
> >http://groups.google.fr/group/comp.p...se_thread/thre...
>
> > I think you'll find some help in D. Clunie tools (I admit I was not
> >able to get anything out of the files though)
>
> >2cts
>
> Thanks Marco and Merci Mathieu
>
> That was exactly what I needed!
>
> Though you seem to mention that David's tool support the old NEMA
> compression? I must admut I didn't find any referenec to that in his
> code (but I didn't search that much...). Do you support it David?

As said in my post, the only place referencing the Variable Pixel Date
was in:

../appsrc/dcfile/dcdecmpr.cc

I do not know more than that.

> Anyway, I have now added the support for the SIENET Lempel-Ziv images
> to my programs.

Congrats !
BTW Your public dict is missing attribute "0020,31xx"

-Mathieu