How come a DICOM file has zero size?

[rotoyo]

I created a DICOM file with the following sources with a already compressed JPEG.
However, the Data Size of the (7FE0,0010) TAG of the created DICOM file becomes 0.

However, the DICOM file contains the correct image.

Because of this, some PACS may refuse to receive it.

I would appreciate it if you could let me know where I am making a mistake.

[Environment]
Fellow Oak DICOM version: 4.0.7.0
OS: Windows10. 64
Platform: NET Framework 4.7.2)

[Source Code]

    private string MakeJpegDicom(Image img, string uid, int instanceNumber)
    {

                    DicomDataset ds = new DicomDataset(DicomTransferSyntax.JPEGProcess1);

                    ds.Add(DicomTag.SpecificCharacterSet, "ISO 2022 IR 149");
                    ds.Add(DicomTag.ImageType, "ORIGINAL\\PRIMARY\\OTHER");

                    ds.Add(DicomTag.SOPClassUID, DicomUID.SecondaryCaptureImageStorage);
                    ds.Add(DicomTag.SOPInstanceUID, uid + "." + instanceNumber);
                    ds.Add(DicomTag.StudyInstanceUID, uid);
                    ds.Add(DicomTag.SeriesInstanceUID, uid);
                    ds.Add(DicomTag.PatientID, _selectedPID);

                    Encoding encKor = DicomEncoding.GetEncoding("ISO 2022 IR 149");

                    ds.Add(DicomTag.InstitutionName, encKor, _hospitalName);
                    ds.Add(DicomTag.PatientName, encKor, _pName);
                    ds.Add(DicomTag.ReferringPhysicianName, encKor,  _doctor);
                    ds.Add(DicomTag.StudyDescription, encKor, _desc);

                    ds.Add(DicomTag.PatientBirthDate, _bod);
                    ds.Add(DicomTag.PatientSex, _pSex);
                    ds.Add(DicomTag.PatientAge, _age);
                    ds.Add(DicomTag.StudyDate, _stdDate);
                    ds.Add(DicomTag.SeriesDate, _stdDate);
                    ds.Add(DicomTag.AcquisitionDate, _stdDate);
                    ds.Add(DicomTag.ContentDate, _stdDate);
                    ds.Add(DicomTag.StudyTime, _stdTime);
                    ds.Add(DicomTag.SeriesTime, _stdTime);
                    ds.Add(DicomTag.AcquisitionTime, _stdTime);
                    ds.Add(DicomTag.ContentTime, _stdTime);
                    ds.Add(DicomTag.AccessionNumber, DateTime.Now.ToString("yyyyMMddhhmmss"));
                    ds.Add(DicomTag.StudyID, "");
                    ds.Add(DicomTag.SeriesNumber, 1);
                    ds.Add(DicomTag.Modality,  _modality);
                    ds.Add(DicomTag.InstanceNumber, instanceNumber);
        
                    //PixcelDate
                    ds.Add(DicomTag.Columns, (ushort)img.Width);
                    ds.Add(DicomTag.Rows, (ushort)img.Height);
                    ds.Add(DicomTag.BitsAllocated, (ushort)8);
                    ds.Add(DicomTag.PhotometricInterpretation, PhotometricInterpretation.YbrFull422.Value);//for jpeg
                     //ds.Add(DicomTag.PhotometricInterpretation, PhotometricInterpretation.RGB.Value);

                    DicomPixelData pixelData = DicomPixelData.Create(ds, true);
        
                    pixelData.SamplesPerPixel = 3;
                    pixelData.BitsStored = 8;
                    pixelData.HighBit = 7;
                    pixelData.PixelRepresentation = 0;
                    pixelData.PlanarConfiguration = 0;

                    MemoryStream stream = new MemoryStream();
                    img.Save(stream, ImageFormat.Jpeg);//Image to stream

                    byte[] bytes = stream.ToArray();//stream to byte
                    MemoryByteBuffer buffer = new MemoryByteBuffer(bytes);

                    //For OB ( Other Byte = 8bit  )
                    var fragment = new DicomOtherByteFragment(DicomTag.PixelData);
                    fragment.Fragments.Add(EmptyBuffer.Value);
                    fragment.Fragments.Add(EvenLengthBuffer.Create(buffer));

                    pixelData.AddFrame(new CompositeByteBuffer(fragment));//pixelData.AddFrame => OB (  8 byte )


                    //File Save
                    DicomFile dicomFile = new DicomFile(ds);
                    string dcmPath = GV.AppDir + "\\Page" + instanceNumber + ".dcm";
                    dicomFile.Save(dcmPath);

                    return dcmPath;

        }

[mrbean-bremen]

Not sure what you mean by zero size - in your first screenshot, the size is shown as FFFFFFFF, e.g. -1, which means "undefined length" in DICOM. This is the normal length entry for compressed image data. So, the reason for this message must be something else...

[amoerie]

Why are you adding an empty buffer to the fragments?

fragment.Fragments.Add(EmptyBuffer.Value);

And why are you creating fragments in the first place, if you put everything in one fragment anyway.
Can't you just do this:

pixelData.AddFrame(buffer);

[gofal]

closing this issue due to inactivity. If there is still a problem with the current version, please reopen this issue and provide actual informations.