Message 460 - Orthanc issue tracker

Author	admin
Recipients
Date	2018-09-04.13:13:08

Content
[BitBucket user: Sébastien Jodogne] [BitBucket date: 2018-09-04.11:13:08] Hello, these images have the transfer syntax "1.2.840.10008.1.2.4.91", which corresponds to JPEG 2000. Orthanc does not natively support the decoding of JPEG 2000 images: It requires the presence of a custom decoder for DICOM images (check out SDK function "OrthancPluginRegisterDecodeImageCallback()"). Installing the Orthanc Web viewer plugin or the Osimis Web viewer plugin installs such a custom decoder that is built on the top of GDCM (http://gdcm.sourceforge.net/). This explains why Orthanc Explorer shows "Unsupported" as long as neither of those plugins is installed.

[BitBucket user: Sébastien Jodogne]
[BitBucket date: 2018-09-04.11:13:08]

Hello, these images have the transfer syntax "1.2.840.10008.1.2.4.91", which corresponds to JPEG 2000. Orthanc does not natively support the decoding of JPEG 2000 images: It requires the presence of a custom decoder for DICOM images (check out SDK function "OrthancPluginRegisterDecodeImageCallback()"). Installing the Orthanc Web viewer plugin or the Osimis Web viewer plugin installs such a custom decoder that is built on the top of GDCM (http://gdcm.sourceforge.net/). This explains why Orthanc Explorer shows "Unsupported" as long as neither of those plugins is installed.

History
Date	User	Action	Args
2026-07-29 15:51:22	admin	link	issue100 messages
2026-07-29 15:51:22	admin	create