如何使用C#将普通jpeg图像字节转换为DICOM本机图像字节 [英] How to convert the ordinary jpeg image bytes to the DICOM native image bytes using C#

问题描述

当前，我正在编写一个用于将JPEG转换为DICOM Image的模块.经过分析，我已经完成了标签渲染，现在在DICOM文件中无法正确渲染图像.

Currently I'm writing a module for the conversion of JPEG to DICOM Image Conversion. On analysis I've completed the tag rendering, now the image is not properly rendered in the DICOM file.

是否存在将JPEG转换为DICOM的算法.

Is there any algorithm to convert the JPEG to DICOM.

推荐答案

继续Matthieu的回答，这是使用出色的GDCM库及其引用的示例为JPEG流创建DICOM信封的一种非常简单的方法(请注意，我有使用了一些帮助程序类，但非常简单):

Continuing from Matthieu's response, here is a very simple way of creating a DICOM envelope for a JPEG stream using the excellent GDCM library and his referenced example (note I have used some helper classes, but is quite simple):

       ImageReader r = new ImageReader();
        gdcm.Image image = r.GetImage();
        image.SetNumberOfDimensions(2);
        DataElement pixeldata = DataElementHelper.PixelData;
        string file1 = @"D:\testfil.jpeg";

        System.IO.FileStream infile =
            new System.IO.FileStream(file1, System.IO.FileMode.Open, System.IO.FileAccess.Read);
        //uint fsize = gdcm.PosixEmulation.FileSize(file1);

        //byte[] jstream = new byte[fsize];
        //infile.Read(jstream, 0, jstream.Length);

        byte[] jstream = System.IO.File.ReadAllBytes(file1);
        uint fsize = (uint) jstream.Length;

        SmartPtrFrag sq = SequenceOfFragments.New();
        Fragment frag = new Fragment();
        frag.SetByteValue(jstream, new gdcm.VL((uint)jstream.Length));
        sq.AddFragment(frag);
        pixeldata.SetValue(sq.__ref__());

        // insert:
        image.SetDataElement(pixeldata);


        PhotometricInterpretation pi = new PhotometricInterpretation(PhotometricInterpretation.PIType.MONOCHROME2);
        image.SetPhotometricInterpretation(pi);

        // FIXME hardcoded:
        PixelFormat pixeltype = new PixelFormat(PixelFormat.ScalarType.UINT8);
        image.SetPixelFormat(pixeltype);

        TransferSyntax ts = new TransferSyntax(TransferSyntax.TSType.JPEGBaselineProcess1);
        image.SetTransferSyntax(ts);

        image.SetDimension(0, (uint)1700);
        image.SetDimension(1, (uint)2200);

        ImageWriter writer = new ImageWriter();
        gdcm.File file = writer.GetFile();


        var ds = file.GetDataSet();
        DataElement patientID = DataElementHelper.PatientID;
        DataElement patientName = DataElementHelper.PatientName;
        DataElement accessionNumber = DataElementHelper.AccessionNumber;
        DataElement studyDate = DataElementHelper.StudyDate;
        DataElement studyTime = DataElementHelper.StudyTime;
        DataElement studyInstanceUID = DataElementHelper.StudyInstanceUID;
        DataElement seriesInstanceUID = DataElementHelper.SeriesInstanceUID;
        DataElement mediaStorage = DataElementHelper.SOPClassUID;

        string studyUID = new gdcm.UIDGenerator().Generate();
        string seriesUID = new gdcm.UIDGenerator().Generate();

        //pixelData.SetArray(b, (uint)b.Length);
        DataElementHelper.SetDataElement(ref patientName, "TEST^MARCUS");
        DataElementHelper.SetDataElement(ref patientID, "0000000801");
        DataElementHelper.SetDataElement(ref accessionNumber, "0000000801-12345");
        DataElementHelper.SetDataElement(ref studyDate, DateTime.Now.ToString("yyyyMMdd"));
        DataElementHelper.SetDataElement(ref studyTime, DateTime.Now.ToString("HHmmss"));
        DataElementHelper.SetDataElement(ref studyInstanceUID, studyUID);
        DataElementHelper.SetDataElement(ref seriesInstanceUID, seriesUID);
        DataElementHelper.SetDataElement(ref mediaStorage, "1.2.840.10008.5.1.4.1.1.7");
        ds.Insert(patientID);
        ds.Insert(patientName);
        ds.Insert(accessionNumber);
        ds.Insert(studyDate);
        ds.Insert(studyTime);
        ds.Insert(studyInstanceUID);
        ds.Insert(seriesInstanceUID);
        ds.Insert(mediaStorage);

        writer.SetImage(image);
        writer.SetFileName("gdcm_test.dcm");
        bool ret = writer.Write();

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