[英]How create a DICOM image from byte (DCMTK)
I want to use the DCMTK 3.6.1 library in an existing project that can create DICOM image. 我想在可以创建DICOM图像的现有项目中使用DCMTK 3.6.1库。 I want to use this library because I want to make the compression of the DICOM images.
我想使用该库,因为我想对DICOM图像进行压缩。 In a new solution (Visual Studio 2013/C++) Following the example in the DCMTK official documentation, I have this code, that works properly.
在一个新的解决方案(Visual Studio 2013 / C ++)中,按照DCMTK官方文档中的示例,我有这段代码,可以正常工作。
using namespace std;
int main()
{
DJEncoderRegistration::registerCodecs();
DcmFileFormat fileformat;
/**** MONO FILE ******/
if (fileformat.loadFile("Files/test.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 EXS_JPEGProcess14SV1
dataset->chooseRepresentation(EXS_JPEGProcess14SV1, ¶ms);
// 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);
metaInfo->putAndInsertString(DCM_ImplementationVersionName, "New Implementation Version Name");
//delete metaInfo->remove(DCM_ImplementationVersionName);
//dataset->remove(DCM_ImplementationVersionName);
// store in lossless JPEG format
fileformat.saveFile("Files/carrellata_esami_compresso.dcm", EXS_JPEGProcess14SV1);
}
}
DJEncoderRegistration::cleanup();
return 0;
}
Now I want to use the same code in an existing C++ application where 现在,我想在现有的C ++应用程序中使用相同的代码,其中
if (infoDicom.arrayImgDicom.GetSize() != 0) //Things of existing previous code
{
//I have added here the registration
DJEncoderRegistration::registerCodecs(); // register JPEG codecs
DcmFileFormat fileformat;
DcmDataset *dataset = fileformat.getDataset();
DJ_RPLossless params;
dataset->putAndInsertUint16(DCM_Rows, infoDicom.rows);
dataset->putAndInsertUint16(DCM_Columns, infoDicom.columns,);
dataset->putAndInsertUint16(DCM_BitsStored, infoDicom.m_bitstor);
dataset->putAndInsertUint16(DCM_HighBit, infoDicom.highbit);
dataset->putAndInsertUint16(DCM_PixelRepresentation, infoDicom.pixelrapresentation);
dataset->putAndInsertUint16(DCM_RescaleIntercept, infoDicom.rescaleintercept);
dataset->putAndInsertString(DCM_PhotometricInterpretation,"MONOCHROME2");
dataset->putAndInsertString(DCM_PixelSpacing, "0.086\\0.086");
dataset->putAndInsertString(DCM_ImagerPixelSpacing, "0.096\\0.096");
BYTE* pData = new BYTE[sizeBuffer];
LPBYTE pSorg;
for (int nf=0; nf<iNumberFrames; nf++)
{
//this contains all the PixelData and I put it into the dataset
pSorg = (BYTE*)infoDicom.arrayImgDicom.GetAt(nf);
dataset->putAndInsertUint8Array(DCM_PixelData, pSorg, sizeBuffer);
dataset->chooseRepresentation(EXS_JPEGProcess14SV1, ¶ms);
//and I put it in my data set
//but this IF return false so che canWriteXfer fails...
if (dataset->canWriteXfer(EXS_JPEGProcess14SV1))
{
dataset->remove(DCM_MediaStorageSOPClassUID);
dataset->remove(DCM_MediaStorageSOPInstanceUID);
}
//the saveFile fails too, and the error is "Pixel
//rappresentation non found" but I have set the Pixel rep with
//dataset->putAndInsertUint16(DCM_PixelRepresentation, infoDicom.pixelrapresentation);
OFCondition status = fileformat.saveFile("test1.dcm", EXS_JPEGProcess14SV1);
DJEncoderRegistration::cleanup();
if (status.bad())
{
int error = 0; //only for test
}
thefile.Write(pSorg, sizeBuffer); //previous code
}
Actually I made test with image that have on one frame, so the for cycle is done only one time. 实际上,我对一帧图像进行了测试,因此for循环仅执行一次。 I don't understand why if I choose
dataset->chooseRepresentation(EXS_LittleEndianImplicit, ¶ms);
我不明白为什么我选择数据
dataset->chooseRepresentation(EXS_LittleEndianImplicit, ¶ms);
or dataset->chooseRepresentation(EXS_LittleEndianEXplicit, ¶ms);
或数据
dataset->chooseRepresentation(EXS_LittleEndianEXplicit, ¶ms);
works perfectly but not when I choose dataset->chooseRepresentation(EXS_JPEGProcess14SV1, ¶ms);
工作正常,但当我选择数据
dataset->chooseRepresentation(EXS_JPEGProcess14SV1, ¶ms);
If I use the same image in the first application, I can compress the image without problems... 如果在第一个应用程序中使用相同的图像,则可以无问题地压缩图像...
EDIT: I think the main problem to solve is the status = dataset->chooseRepresentation(EXS_JPEGProcess14SV1, &rp_lossless)
that return "Tag not found". 编辑:我认为要解决的主要问题是
status = dataset->chooseRepresentation(EXS_JPEGProcess14SV1, &rp_lossless)
返回“找不到标记”。 How can I know wich tag is missed? 我怎么知道缺少wich标签?
EDIT2 : As suggest in the DCMTK forum I have added the tag about the Bits Allocated and now works for few images, but non for all. EDIT2 :如DCMTK论坛中的建议,我添加了有关“已分配的比特”的标记,现在仅适用于少量图像,但不适用于所有图像。 For some images I have again "Tag not found": how can I know wich one of tags is missing?
对于某些图像,我再次遇到“找不到标签”:如何知道其中一个标签缺失? As a rule it's better insert all the tags?
通常最好插入所有标签?
I solve the problem adding the tags DCM_BitsAllocated and DCM_PlanarConfiguration. 我解决了添加标签DCM_BitsAllocated和DCM_PlanarConfiguration的问题。 This are the tags that are missed.
这是丢失的标签。 I hope that is useful for someone.
我希望这对某人有用。
At least you should call the function chooseRepresentation, after you have applied the data. 应用数据后,至少应该调用函数selectRepresentation。
**dataset->putAndInsertUint8Array(DCM_PixelData, pSorg, sizeBuffer);**
dataset->chooseRepresentation(EXS_JPEGProcess14SV1, ¶ms);
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