使用 DCMTK (C++) 压缩 DICOM 文件

Compress DICOM file with DCMTK (C++)

妈的我很沮丧...

按照本页中的示例 http://support.dcmtk.org/docs/mod_dcmjpeg.html,我编写了一个 C++ 程序来解压缩 JPEG 压缩的 DICOM 图像文件

现在我想反之亦然,从未压缩到压缩,如果我在同一页面中使用另一个示例,使用相同(或其他文件)代码编译和 运行 但不是能够压缩文件...

看了下面的代码,原来的Xfer和Current是一样的,这个不好,需要不同

dataset->chooseRepresentation(EXS_JPEGProcess14SV1, &params);

好像chooseRepresentation方法失败了....

更多行

dataset->canWriteXfer(EXS_JPEGProcess14SV1)

return 假

我在 dcpixel.cc 文件中看到,调试代码进入

DcmPixelData::canChooseRepresentation(......... 
.... 
.... 
// representation not found, check if we have a codec that can create the 
// desired representation. 
if (original == repListEnd) 
   { 
     result = DcmCodecList::canChangeCoding(EXS_LittleEndianExplicit, toType.getXfer()); 
    } 

结果为假....

我该如何解决?有人拥有可以使用 DCMTK 或其他库压缩 DICOM 图像的代码

这是完整代码:

int main()
{

    //dcxfer.h
    DJDecoderRegistration::registerCodecs(); // register JPEG codecs
    DcmFileFormat fileformat;

    /**** MONO FILE ******/


    if (fileformat.loadFile("Files/cnv3DSlice (1)_cnv.dcm").good())
    {
        DcmDataset *dataset = fileformat.getDataset();
        DcmItem *metaInfo = fileformat.getMetaInfo();
        DJ_RPLossless params; // codec parameters, we use the defaults


        // this causes the lossless JPEG version of the dataset to be created
        dataset->chooseRepresentation(EXS_JPEGProcess14SV1, &params);

        // check if everything went well
        if (dataset->canWriteXfer(EXS_JPEGProcess14SV1))
        {
            // force the meta-header UIDs to be re-generated when storing the file
            // since the UIDs in the data set may have changed
            delete metaInfo->remove(DCM_MediaStorageSOPClassUID);
            delete metaInfo->remove(DCM_MediaStorageSOPInstanceUID);

            // store in lossless JPEG format
            fileformat.saveFile("Files/test_jpeg_compresso.dcm", EXS_JPEGProcess14SV1);
        }
    }

    DJDecoderRegistration::cleanup(); // deregister JPEG codecs

    return 0;
}

压缩图片时需要调用

DJEncoderRegistration::registerCodecs();

解压是

DJDecoderRegistration::registerCodecs();