Question

Ubuntu中用Qt做的GUI一打开图像（imread）就自动关闭，求解！

我在Ubuntu下用Qt做了一个小GUI，功能就是打开一幅图像显示出来，再旋转并显示。但是在“打开”对话框选择了图片文件点击“确定”之后，GUI就自动关闭了。求救！

错误提示代码如下：
Starting /home/administrator/桌面/C&C++程序_Ubuntu/Qt/build-otherQtGUI-Desktop-Debug/otherQtGUI...

(otherQtGUI:19047): Gtk-WARNING **: gtk_disable_setlocale() must be called before gtk_init()

OpenCV Error: Assertion failed (size.width>0 && size.height>0) in imshow, file /home/administrator/下载/opencv-2.4.6.1/modules/highgui/src/window.cpp, line 261

terminate called after throwing an instance of 'cv::Exception'

what(): /home/administrator/下载/opencv-2.4.6.1/modules/highgui/src/window.cpp:261: error: (-215) size.width>0 && size.height>0 in function imshow

The program has unexpectedly finished.

/home/administrator/桌面/C&C++程序_Ubuntu/Qt/build-otherQtGUI-Desktop-Debug/otherQtGUI exited with code 0
部分程序代码（用的OpenCV 2.4.6）：
void MainWindow::on_pushButton_clicked()
{
QString fileName = QFileDialog::getOpenFileName(this,
tr("Open Image"), ".", tr("Image Files (*.png *.jpg *.bmp)"));
image= cv::imread(fileName.toLatin1().data()); //toAscii改成了toLatin1
cv::namedWindow("Original Image");
cv::imshow("Original Image", image);
}

Answer 1

size.width>0 && size.height>0 in function imshow 这个一般来说是让迹图迟滑明片读取失败造成码告的，图片读取失败后，生成的Mat矩阵大小为0

Answer 2

不清楚cv是什么东西 但很明显是cv出错了 只能调试cv了