Re: [Gdcm2] convert dicom to jpg/png

[Mathieu M. <mat...@gm...>]

Mohica,

On Tue, Mar 10, 2015 at 3:13 PM, Mohica Jasha <moh...@gm...> wrote:
> I wonder if it is possible to use the gdcm command line tools to
> convert dicom object to jpg or png files.
>
>
> I tried to convert JLSL/CT1_JLSL download from from
> ftp://medical.nema.org/medical/dicom/DataSets/WG04/compsamples_jpegls.tar
> to jpg/png but gdcmimg fails:
>
> ~/gdcm/gdcm-build/bin/gdcmimg -i ~/nema-images/IMAGES/JLSL/CT1_JLSL -o test.pnm
> Problem writing PNM file
>
> the transfer syntax of the dicom file is [1.2.840.10008.1.2.4.80]
> (JPEG-LS Lossless Image Compression)

The GDCM command line tools may be too low level for you. Anyway if
you really want to extract the image portion of a DICOM Instance, you
can do that in two steps:

$ gdcmconv --raw CT1_JLSL CT1_JLSL_raw.dcm
$ gdcmimg CT1_JLSL_raw.dcm CT1_JLSL_raw.dcm.pgm

gdcmimg can only un-encapsulate raw input. If you want to
de-encapsulated compressed dicom stream, you need to use gdcmraw:

http://gdcm.sourceforge.net/2.4/html/gdcmraw.html

DCMTK tool will be able to apply the windows-level LUT if this what
you are looking for. Within gdcm you can use gdcm2vtk to render a
DICOM instance into PNG.