Search found 1384 matches

by Marco Eichelberg
Mon, 2023-05-29, 13:05
Forum: DCMTK - General
Topic: convertToUTF8() Cannot select source character set
Replies: 7
Views: 101

Re: convertToUTF8() Cannot select source character set

If you can get access to an anonymized sample file, we'd be interested in a copy to bugs/at/dcmtk/dot/org. I have never seen Hebrew used in an ISO 2022 multi-character set setting, so even if, as Jörg points out, the file violates the DICOM standard, I'd still be interested in checking whether we wo...
by Marco Eichelberg
Fri, 2023-04-28, 11:48
Forum: DCMTK - General
Topic: 0xa900: Error: DataSetDoesNotMatchSOPClass
Replies: 7
Views: 398

Re: 0xa900: Error: DataSetDoesNotMatchSOPClass

JPEG baseline is a lossy (irreversible) compression. That means that the compressed image may not be "identical" from a medical point of view to the original one - the difference being the image quality.
In such cases DICOM requires the SOP Instance UID to be changed.
by Marco Eichelberg
Fri, 2023-04-28, 11:47
Forum: DCMTK - General
Topic: how to add text/annotation to a dicom image
Replies: 4
Views: 317

Re: how to add text/annotation to a dicom image

The overlay data should be a black/white bitmap, with one bit per pixel (equivalent to a DICOM image with Bits Allocated=1, Bits Stored=1, High Bit=0) and the same size as the main image.
by Marco Eichelberg
Fri, 2023-04-14, 14:10
Forum: DCMTK - General
Topic: CI logs with unit test executions?
Replies: 6
Views: 369

Re: CI logs with unit test executions?

Correct. Our CI system is a "nightly build" of the current development branch and will overwrite the old logs after a couple of days. The logs of the build that happened to be identical to 3.6.7 release are long gone.
by Marco Eichelberg
Fri, 2023-04-14, 14:08
Forum: DCMTK - General
Topic: Issue with Reading Pixel Data using getUncompressedFrame
Replies: 1
Views: 227

Re: Issue with Reading Pixel Data using getUncompressedFrame

Let's have a look: You are creating a DcmPixelData instance called "pixel_data" on the stack (for no obvious reason): DcmPixelData pixel_data = DcmPixelData(dcm_tag_pixel_data); Then you create a pointer that points to pixel_data: DcmElement* pixel_data_ptr = &pixel_data; Then you run findAndGetElem...
by Marco Eichelberg
Thu, 2023-03-23, 16:42
Forum: DCMTK - General
Topic: img2dcm says F: Error converting file: Not a JPEG file
Replies: 4
Views: 371

Re: img2dcm says F: Error converting file: Not a JPEG file

To add to what my colleagues already said, there is no such thing as a "16 bit JPEG", unless you consider the lossless JPEG encoding that nobody outside the medical world supports.
img2dcm expects an image using the Baseline lossy JPEG format (i.e. the JPEG format your camera or smart phone produces).
by Marco Eichelberg
Sat, 2023-03-11, 14:08
Forum: DCMTK - General
Topic: Minimal example (Linux) application using DCMTK with linking errors
Replies: 16
Views: 841

Re: Minimal example (Linux) application using DCMTK with linking errors

Yes, this is possible. libxml2, which is used by some DCMTK tools, can be compiled with character set conversion support based on GNU iconv or ICU. In that case linking against libxml2 causes the dependency on ICU.
by Marco Eichelberg
Tue, 2023-03-07, 14:32
Forum: DCMTK - General
Topic: Minimal example (Linux) application using DCMTK with linking errors
Replies: 16
Views: 841

Re: Minimal example (Linux) application using DCMTK with linking errors

DCMTK_PORTABLE_LINUX_BINARIES tries to create portable Linux binaries by linking all libraries statically, with the exception of glibc, which is linked dynamically. Glibc cannot be linked statically in a portable manner since the library will load additional shared objects at runtime, and this is li...
by Marco Eichelberg
Mon, 2023-03-06, 09:31
Forum: DCMTK - General
Topic: Findscu.exe: reading from a file?
Replies: 3
Views: 324

Re: Findscu.exe: reading from a file?

Yes, that is correct. Wildcard expansion works differently on Windows.
by Marco Eichelberg
Fri, 2023-03-03, 12:05
Forum: DCMTK - General
Topic: Findscu.exe: reading from a file?
Replies: 3
Views: 324

Re: Findscu.exe: reading from a file?

Yes, that is possible. All DCMTK tools can read the options from a command file instead of the command line. Just specify the name of the command line with a leading '@': findscu @commands.txt The file 'commands.txt' should be a simple text file that contains the command line options, separated by s...
by Marco Eichelberg
Wed, 2023-03-01, 18:14
Forum: DCMTK - Installation
Topic: dcmjpls.lib : possible defect in the configuration tool?
Replies: 1
Views: 264

Re: dcmjpls.lib : possible defect in the configuration tool?

The files in the libcharls folder are compiled into a separate library, named "libdcmtkcharls.a" on Linux, and "dcmtkcharls.lib" on Windows. You need to link against this library whenever you link against the static libdcmjpls library. DLLs automatically contain this dependency, static libraries do ...
by Marco Eichelberg
Wed, 2023-03-01, 17:58
Forum: DCMTK - Installation
Topic: 3.6.7 : Problem with linking JpegLS static library on Windows
Replies: 3
Views: 352

Re: 3.6.7 : Problem with linking JpegLS static library on Windows

artemmikheev wrote:
Sun, 2023-02-26, 16:26
BTW, what happened to dcmsign.lib? The project for it is present in the source code, but when CMAKE generated the whole solution, the dcmsign project is missing from the solution.
You are compiling without OpenSSL support. In that case, the dcmsign library is empty.
by Marco Eichelberg
Tue, 2023-02-07, 09:07
Forum: DCMTK - General
Topic: 0xa900: Error: Refused - Data Set does not match SOP Class
Replies: 11
Views: 670

Re: 0xa900: Error: Refused - Data Set does not match SOP Class

My guess would be an incorrect presentation context ID used in the C-STORE-RQ message. Unfortunately, the dump output of our tools does not print this ID - perhaps something we should change.
by Marco Eichelberg
Thu, 2023-02-02, 09:47
Forum: DCMTK - General
Topic: Slow Dicom->BMP rendering
Replies: 4
Views: 408

Re: Slow Dicom->BMP rendering

Well, the reason why JPEG 2000 has never achieved widespread usage is the fact that the compression algorithm requires much more memory and time than, for example, classic JPEG. So in comparison to JPEG, JPEG 2000 will always be slow, and there is no way to avoid that. Of course there are faster and...
by Marco Eichelberg
Fri, 2023-01-20, 16:39
Forum: Other DICOM Tools
Topic: Problem when printing to an AGFA Drystar AXYS printer
Replies: 4
Views: 504

Re: Problem when printing to an AGFA Drystar AXYS printer

Well, a configuration of the printer that has different settings for different AETitles explains the problem...