qt中QImageQImage和Mat类型的转换

将opencv中的Mat类型转换为qt中的QImage QImage Mat2QImage(const Mat &mat) { //8-bitsunsigned,NO.OFCHANNELS=1 if(mat.type()==CV_8UC1) { //cout<<"1"<<endl; //Setthecolortable(usedtotranslatecolourindexestoqRgbvalues) QVector<QRgb>colorTable; for(int i=0;i<256;i++) colorTable.push_back(qRgb(i,i,i)); //CopyinputMat const uchar*qImageBuffer=(const uchar*)mat.data; //CreateQImagewithsamedimensionsasinputMat QImage img(qImageBuffer,mat.cols,mat.rows,mat.step,QImage::Format_Indexed8); img.setColorTable(colorTable); return img; } //8-bitsunsigned,NO.OFCHANNELS=3 if(mat.type()==CV_8UC3) { //cout<<"3"<<endl; //CopyinputMat const uchar*qImageBuffer=(const uchar*)mat.data; //CreateQImagewithsamedimensionsasinputMat QImage img(qImageBuffer,mat.cols,mat.rows,mat.step,QImage::Format_RGB888); return img.rgbSwapped(); } else { qDebug()<<"ERROR:MatcouldnotbeconvertedtoQImage."; return QImage(); }

}

调用方式为

Mat fileSrc = imread( path); QImage imagesrc = Mat2QImage(fileSrc);