flip函数可以实现图像反转
这里贴出mainwindow.cpp的内容吧，书上的代码对应opencv2.2现在有些不能用了请注意
#include "mainwindow.h"
#include "ui_mainwindow.h"
using namespace cv;
MainWindow::MainWindow(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::MainWindow)
{
ui->setupUi(this);
ui->pushButton_2->setEnabled(false);
}
MainWindow::~MainWindow()
{
delete ui;
}
void MainWindow::on_pushButton_clicked() //button 1
{
QString fileName = QFileDialog::getOpenFileName(this, tr("Open Image"),
".", tr("Image Files (*.png *.jpg *.jpeg *.bmp)"));
image = imread(fileName.toLatin1().data());
if(image.data){
ui->pushButton_2->setEnabled(true);
}
namedWindow("Original Image");
imshow("Original Image", image);
}
void MainWindow::on_pushButton_2_clicked() //button 2
{
flip(image, image, 1);
// cvtColor(image, image, CV_RGB2BGR); cvtColor和CV_RGB2BGR现在用不了了~
QImage img = QImage((const unsigned char*)(image.data), image.cols, image.rows, QImage::Format_RGB888);
ui->label->setPixmap(QPixmap::fromImage(img));
ui->label->resize(ui->label->pixmap()->size());
// namedWindow("Output Image");
// imshow("Output Image", image);
}
