test edge filter

mainwindow.cpp

@@ -9,7 +9,7 @@ MainWindow::MainWindow(QWidget *parent)
     cap = new VideoCapture(0);
     onCap = false;
     vt = new QTimer(this);
-//    vt->start(20);
+    //    vt->start(20);
     QObject::connect(vt,SIGNAL(timeout()),this,SLOT(showImage()));
 }
 
@@ -34,6 +34,10 @@ void MainWindow::on_pushButton_clicked()
 void MainWindow::showImage(){
     if(NULL!=cap){
         if(cap->read(image)){
+            //            image =
+
+//            cv::edgePreservingFilter(image,image);
+            cv::cvtColor(image,image,cv::COLOR_RGB2BGR);
             ui->label->setPixmap(QPixmap::fromImage(QImage(image.data,image.cols,image.rows,QImage::Format_RGB888)));
         }
     }