Finally, QT is installed and transplanted. I am looking forward to the problem with you. The next step is to install opencv. This is a bit more complicated. Then configure some things as follows The tragedy is wrong, showing that cmake is not installed. Use the command apt-get install cmake. In fact, you need to install another software apt-get install cmake-curses-gui. After installing these two softwares, you can execute cmake -D CMAKE_BUILD_TYPE=RELEASE -D CMAKE_INSTALL_PREFIX=/usr/local .. CMAKE_INSTALL_PREFIX=/usr/local is the installation path. The opencv on the PC is generally installed in the /usr/local path. This is successfully executed. Use ccmke./ to see what is installed, change it here. One thing, change OFF after WITH_V4L to ON (press the enter key to change, because you will need to use the camera function later), press c key to configure after changing, then press g key to generate and exit configuration, compile with make Opencv, after the compilation, make install can be installed, the installation location has also been mentioned before. After installing opencv, the first thing I want to think about is to run a program and try it. Conveniently organized, the opencv code on the PC is placed under /opt/zedboard/opencv_pc/code, which requires a folder to be created. Go to the file cd /opt/zedboard/opencv_pc/code/ Create a new test program with qt, where the program created by rainysky is named lena, built an empty application, and add three programs, (Note: This program It was taken from a blog inside the openhw forum) The code in example.h is: #define EXAMPLE_H The code in example.cpp is: The code in main.cpp is: In the code you can see that the image we want to display is lena.jpg, which is included in the opencv source code. Running this program in qt appears, the error of the crash: Follow the prompts to install GTK: apt-get install libgtk2.0-dev, after the installation is complete, re-open the software, run the program, you can see the beautiful lens image
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The first step is definitely to download the opencv source package, downloaded from the official website of opencv, rainysky download is the latest version 2.4.4. The downloaded address is the same as the time of qt. Convenient management, create a new folder /opt/zedboard/opencv_pc (because you need to install one on each PC and zed, so create a different folder) 
#ifndef EXAMPLE_H
#include
#include
#include "cv.h"
#include "highgui.h"
Class OpenCV_Example : public QMainWindow
{
Q_OBJECT
Public:
OpenCV_Example();
QPushButton *b1;
IplImage *img;
Public slots:
Void slot_imgshow();
};
#endif //EXAMPLE_H
#include "example.h"
OpenCV_Example::OpenCV_Example()
{
setGeometry(100,100,100,100);
B1 = new QPushButton("Show Image",this);
Connect(b1,SIGNAL(clicked()), this, SLOT(slot_imgshow()));
}
Void OpenCV_Example::slot_imgshow()
{
//QMessageBox::informaTIon(this,"TItle","Hello this is popup");
Img = cvLoadImage("/opt/zedboard/opencv_pc/code/lena/lena/lena.jpg",1);//Image to open
//create a new window
cvNamedWindow("Window", 1);
//display the image in the window
cvShowImage("Window", img);
//wait for key to close the window
cvWaitKey(0);
cvDestroyWindow( "Window" ); //destroy the window
}
//Write in main:
#include
#include "example.h"
Int main(int argc, char *argv[])
{
QApplicaTIon a(argc, argv);
OpenCV_Example w;
W.show();
Return a.exec();
} 
