Question

我希望能够在Qt项目的Dicom图像中显示与Dicom Viewer程序可以提供的渲染相同的渲染。

我能够做到，但是对比很差。听说您需要对像素进行操作，但不确定。你有一个可行的例子吗？

编辑：我添加了我的代码，以防它对您有所帮助，我评论了很多事情，因为我注意到结果完全一样

#include "mainwindow.h"
#include "ui_mainwindow.h"
#include <iostream>
#undef UNICODE
#undef _UNICODE
#include <dcmtk/config/osconfig.h>
#include <dcmtk/dcmdata/dctk.h>
#include <dcmtk/dcmimgle/dcmimage.h>
#include <QPixmap>
#include <QLabel>
#include <QImageReader>

using namespace std;

MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
    ui->setupUi(this);

    //int sizeX = 600;
   // int sizeY = 600;


    //initialize random seed
    //srand (time(NULL));


    //QImage image = QImage( sizeX, sizeY, QImage::Format_RGB32 );

    /*for( int l=0; l<sizeX; l++ )
    {
        for( int c=0; c<sizeY; c++ )
        {
            ///Random color for each pixel
            //image.setPixel( l, c, qRgb(rand() % 256, rand() % 256, rand() % 256) );

            ///Fixed color for each pixel
            image.setPixel( l, c, qRgb(100, 150, 200) );
        }
    }*/
    const char *file = "/home/x4rkz/project/Laura/QTImage/IMG00000";
    DicomImage *image = new DicomImage(file);


    if (image != NULL)
        {
          if (image->getStatus() == EIS_Normal)
          {
            Uint8 *pixelData = (Uint8 *)(image->getOutputData(8 )); // bits per sample
            // Uint8 is a pointer to internal memory buffer
            if (pixelData != NULL)
            {
                // do something useful with the pixel data
                QImage img(pixelData,image->getWidth(), image->getHeight(), QImage::Format_Indexed8 );
                /*QColor color;
                QImage *img;
                void *pDicomDibits;
                uchar *px;
               // uchar pixel[4];
                const int width = (int)(image->getWidth());
                const int height = (int)(image->getHeight());
                if (image->isMonochrome()){
                    img = new QImage(width, height, QImage::Format_Indexed8);
                    img->setColorCount(256);
                    // define gray palette here
                    for (int i=0; i<256; i++) {
                        color.setRgb(i, i, i);
                        img->setColor(i, color.rgb());
                    }

                    image->createWindowsDIB(pDicomDibits, 0, 0, 8, 0, 1);
                    unsigned char * pd;
                    pd=(unsigned char *)pDicomDibits;

                    for (int y=0; y < (long) height; y++)
                    {
                        px = img->scanLine(y);
                        for (int x=0; x < (long) width; x++)
                        {
                            px[x] = (unsigned char) (*pd);
                            pd++;
                        }
                    }*/


                    QGraphicsScene * graphic = new QGraphicsScene( this );

                    graphic->addPixmap( QPixmap::fromImage( img ) );

                    ui->graphicsView->setScene(graphic);

               /* }else
                    cout << "Non monochrome image" << endl;*/


            }
          } else
            cerr << "Error: cannot load DICOM image (" << DicomImage::getString(image->getStatus()) << ")" << endl;
        }
  }

MainWindow::~MainWindow()
{
    delete ui;
}









#include "mainwindow.h"
#include <QApplication>
#include <iostream>
#undef UNICODE
#undef _UNICODE
#include <dcmtk/config/osconfig.h>
#include <dcmtk/dcmdata/dctk.h>
#include <dcmtk/dcmimgle/dcmimage.h>
#include <QPixmap>
#include <QLabel>
#include <QImageReader>

using namespace std;

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    MainWindow w;
    w.show();

    return a.exec();
}

如您所见，结果没有任何争议。

Answer 1

如您所见，结果没有任何争议。

如果渲染的图像对比度太低，则应尝试设置适当的VOI（兴趣值）窗口，例如使用image->setMinMaxWndow()。有关详细信息，请参见API documentation。

dcmtk显示图像Qt示例

1 个答案: