DICOM @ OFFIS

Does the Specific Character Set (0008,0005) attribute of the dataset contain only one value, namely "ISO 2022 IR 138"?

I mean you could derive a subclass from DcmPixelItem which stores information on how to retrieve the pixel data for the particular tile from the source, but only creates the byte stream when needed (i.e. on demand), which is when it is transferred over the network (or written to file). This is the s...

If all data should reside in main memory, using the "create tile pixel data on demand" would be my first choice.

You could upload the PNG images to another public server and add links to your posting.

By the way, what is the output of the dcm2pnm tool for this particular DICOM image?

To the OP: Since WSI objects are typically stored as compressed multi-frame images where each frame represents a tile of the entire images, you could use the createValueFromTempFile() method to specify the pixel data for each tile individually. Alternatively, you could create the pixel data of the t...

The reported issue has been fixed in the current development version (see git repository). I've also updated the automatically generated classed to DICOM 2023b.

I don't think that we should replace the #defines with global variables. In my opinion, global variables are usually the worst solution. Also, I don't think that anyone who has its own organization root (UID prefix) will use precompiled binaries/libraries. At least, in my estimation, this is rather ...

No, the DcmEncapsulatedDocument does not support this, as the DICOM standard does not support this. Encapsulating ZIP, TXT or JSON files, would be a private extension and should be encoded appropriately, e.g. by using private attributes in a standard Storage SOP Class or by using a private SOP Class...

Yes, the DicomImage also supports processing of color images, such as those with a photometric interpretation of "RGB". However, for historical reasons, the support for monochrome and color images is split into two libraries: dcmimgle and dcmimage. In order to register support for color images to th...

I can understand your points and will discuss with the other DCMTK team members whether we want to define a sub-prefix (based on SITE_UID_ROOT) that is reserved for application-specific / private usage. However, I don't think that we will use ".2" for these type of UIDs, and also don't think that we...

As far as the DCMTK-specific UID prefixes are concerned, there is a Feature Request in our issue tracker that refers to this topic: https://support.dcmtk.org/redmine/issues/656 - However, there was no decision yet on how to actually implement it. Since you were asking for "private" UIDs, wouldn't it...

It is not required that the overlay planes have the same size (rows and columns) as the image (pixel data).

I've never heard about Conda, but there are definitely packages for DCMTK 3.6.7: https://anaconda.org/bioconda/dcmtk/files

UL is defined as a 32-bit unsigned integer, if this was the question. See DICOM part 5 for details. Also the API documentation lists the VRs for which a particular findAndGetXXX() method is applicable. By the way, I wonder why you define your own DcmTagKey and do not use the pre-defined constants, e...

I can add the +on2 option and get a 16 bit jpeg image No, +on2 creates a PNG image with 16 bits per sample. Here's the relevant excerpt from the dcmj2pnm manpage: image format: +op --write-raw-pnm write 8-bit binary PGM/PPM (default for files) +opb --write-8-bit-pnm write 8-bit ASCII PGM/PPM (defau...