[magick-users] DICOM jpeg lossless

[Normand Mongeau]

>
>> third try, either no one knows or I'm asking the wrong question?
>
> Makes me wonder, too, usually this list seems to get quite good responses
> to questions. Maybe that version is just too outdated? BTW, you hijacked
> an existing thread with your second posting, maybe people did not see it.
>

Well I'd use a more recent version, but version 6.3.3 (last one I tried) had 
a _huge_
bug: each string allocated in the dcm reader used 4096 bytes... A tad too 
much for my needs.

>> I'm trying to read DICOM files containing lossless jpeg.  I replaced
>> the standard jpeg library with the patched one, but it doesn't work.
>> Can anyone confirm or infirm that version 6.2.7 of IM can read DICOM
>> jpeg lossless?  If so, how?
>
> I have 6.3.3 running, so I cannot say much about 6.2.7. I tried with my
> version, and got the same error you stated in your first posting:
>  convert: Unsupported JPEG process: SOF type 0xc3 `/tmp/magick-XXpmyYVe'.
>  convert: missing an image filename `I9000001.png'.
>
> And with plain, uncompressed DICOM I get this error:
>  convert: Insufficient image data in file `Image.-139_0.dcm'.
>  convert: missing an image filename `Image.-139_0.png'.

Hmm I can read pretty much any DICOM file with 6.2.7, except of course jpeg 
lossless (and potentially others, but I haven't yet come across them).

>
> Do you depend on ImageMagick for your task? The Offis DICOM Toolkit
> (<http://dicom.offis.de/>) has dcm2pnm which allows to convert DICOM into
> some image formats like png. Maybe this would help you?

Yes I do depend on IM, but I'm currently investigating DCMTK.

>
> Another such utility I know of is dicom2,
> <http://barre.nom.fr/medical/dicom2/>
>
> Both are sort of free.
>

I already took a look at this, but it's not suitable for my needs.  I have a 
3D viewer, and I don't like to rely on external programs to do work.


Thanks,

Normand