Trying to build a test with Opencv and QT
Recently build OPENCV 3.4.3 with CMAKE 3.12.4 and MINGW64(32bit) 8.1.0 in Windows 7. Have QT 5.6 and i trying to test this build as QT Console App, but when i compiling with QT only get the message "Press "RETURN" to close this window...".
.PRO file:
CONFIG += c++11
TARGET = test
CONFIG += console
CONFIG -= app_bundle
TEMPLATE = app
SOURCES += main.cpp
OTHER_FILES += test.png
INCLUDEPATH += C:UsersTestDesktopopencvbuildinclude
LIBS += C:UsersTestDesktopmingwbinlibopencv_*.dll
main.cpp:
#include <QCoreApplication>
#include <iostream>
#include "opencv2/core/core.hpp"
#include "opencv2/highgui/highgui.hpp"
#include "opencv/cv.h"
using namespace std;
int main(int argc, char *argv) {
QCoreApplication a(argc, argv);
cout << "Hello World!" << endl;
cv::Mat mat;
mat = cv::imread("test.png");
cvNamedWindow("hello");
cv::imshow("hello",mat);
return a.exec();
}
What im doing wrong?
c++ qt opencv mingw-w64
asked Nov 12 '18 at 13:11
Siewdass Sf
396
add a comment |
Recently build OPENCV 3.4.3 with CMAKE 3.12.4 and MINGW64(32bit) 8.1.0 in Windows 7. Have QT 5.6 and i trying to test this build as QT Console App, but when i compiling with QT only get the message "Press "RETURN" to close this window...".
.PRO file:
CONFIG += c++11
TARGET = test
CONFIG += console
CONFIG -= app_bundle
TEMPLATE = app
SOURCES += main.cpp
OTHER_FILES += test.png
INCLUDEPATH += C:UsersTestDesktopopencvbuildinclude
LIBS += C:UsersTestDesktopmingwbinlibopencv_*.dll
main.cpp:
#include <QCoreApplication>
#include <iostream>
#include "opencv2/core/core.hpp"
#include "opencv2/highgui/highgui.hpp"
#include "opencv/cv.h"
using namespace std;
int main(int argc, char *argv) {
QCoreApplication a(argc, argv);
cout << "Hello World!" << endl;
cv::Mat mat;
mat = cv::imread("test.png");
cvNamedWindow("hello");
cv::imshow("hello",mat);
return a.exec();
}
What im doing wrong?
c++ qt opencv mingw-w64
asked Nov 12 '18 at 13:11
Siewdass Sf
396
The usual problem --imshowwithoutwaitKey.
– Dan Mašek
Nov 12 '18 at 16:34
add a comment |
Recently build OPENCV 3.4.3 with CMAKE 3.12.4 and MINGW64(32bit) 8.1.0 in Windows 7. Have QT 5.6 and i trying to test this build as QT Console App, but when i compiling with QT only get the message "Press "RETURN" to close this window...".
.PRO file:
CONFIG += c++11
TARGET = test
CONFIG += console
CONFIG -= app_bundle
TEMPLATE = app
SOURCES += main.cpp
OTHER_FILES += test.png
INCLUDEPATH += C:UsersTestDesktopopencvbuildinclude
LIBS += C:UsersTestDesktopmingwbinlibopencv_*.dll
main.cpp:
#include <QCoreApplication>
#include <iostream>
#include "opencv2/core/core.hpp"
#include "opencv2/highgui/highgui.hpp"
#include "opencv/cv.h"
using namespace std;
int main(int argc, char *argv) {
QCoreApplication a(argc, argv);
cout << "Hello World!" << endl;
cv::Mat mat;
mat = cv::imread("test.png");
cvNamedWindow("hello");
cv::imshow("hello",mat);
return a.exec();
}
What im doing wrong?
c++ qt opencv mingw-w64
asked Nov 12 '18 at 13:11
Siewdass Sf
396
Recently build OPENCV 3.4.3 with CMAKE 3.12.4 and MINGW64(32bit) 8.1.0 in Windows 7. Have QT 5.6 and i trying to test this build as QT Console App, but when i compiling with QT only get the message "Press "RETURN" to close this window...".
.PRO file:
CONFIG += c++11
TARGET = test
CONFIG += console
CONFIG -= app_bundle
TEMPLATE = app
SOURCES += main.cpp
OTHER_FILES += test.png
INCLUDEPATH += C:UsersTestDesktopopencvbuildinclude
LIBS += C:UsersTestDesktopmingwbinlibopencv_*.dll
main.cpp:
#include <QCoreApplication>
#include <iostream>
#include "opencv2/core/core.hpp"
#include "opencv2/highgui/highgui.hpp"
#include "opencv/cv.h"
using namespace std;
int main(int argc, char *argv) {
QCoreApplication a(argc, argv);
cout << "Hello World!" << endl;
cv::Mat mat;
mat = cv::imread("test.png");
cvNamedWindow("hello");
cv::imshow("hello",mat);
return a.exec();
}
What im doing wrong?
c++ qt opencv mingw-w64
c++ qt opencv mingw-w64
asked Nov 12 '18 at 13:11
Siewdass Sf
396
asked Nov 12 '18 at 13:11
Siewdass Sf
396
edited Nov 12 '18 at 13:16
asked Nov 12 '18 at 13:11
Siewdass Sf
396
asked Nov 12 '18 at 13:11
Siewdass Sf
396
asked Nov 12 '18 at 13:11
Siewdass Sf
396
396
The usual problem --imshowwithoutwaitKey.
– Dan Mašek
Nov 12 '18 at 16:34
add a comment |
The usual problem --imshowwithoutwaitKey.
– Dan Mašek
Nov 12 '18 at 16:34
The usual problem --
imshow without waitKey.– Dan Mašek
Nov 12 '18 at 16:34
The usual problem --
imshow without waitKey.– Dan Mašek
Nov 12 '18 at 16:34
add a comment |
1 Answer
1
active
oldest
votes
Imo the problem is not in your code, I just run it (using Qt5.5, Win10, openCV 4 and mingw64), even if I had to change cvNamedWindow to cv::namedWindow.
I have two hints:
- did you build openCV with mingw64? If not, do so.
- are the openCV dlls in the path when you run the application? You can also copy all opencv dlls in the program folder to check that quickly...
answered Nov 12 '18 at 13:29
L.C.
19012
Omg i forgot that x.x now, it works i get this error. "error assertion failed (size.width 0 && size.height 0)" but i resolve it with this: stackoverflow.com/questions/31341845/… thanks!!!!
– Siewdass Sf
Nov 12 '18 at 14:12
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
Imo the problem is not in your code, I just run it (using Qt5.5, Win10, openCV 4 and mingw64), even if I had to change cvNamedWindow to cv::namedWindow.
I have two hints:
- did you build openCV with mingw64? If not, do so.
- are the openCV dlls in the path when you run the application? You can also copy all opencv dlls in the program folder to check that quickly...
answered Nov 12 '18 at 13:29
L.C.
19012
Omg i forgot that x.x now, it works i get this error. "error assertion failed (size.width 0 && size.height 0)" but i resolve it with this: stackoverflow.com/questions/31341845/… thanks!!!!
– Siewdass Sf
Nov 12 '18 at 14:12
add a comment |
Imo the problem is not in your code, I just run it (using Qt5.5, Win10, openCV 4 and mingw64), even if I had to change cvNamedWindow to cv::namedWindow.
I have two hints:
- did you build openCV with mingw64? If not, do so.
- are the openCV dlls in the path when you run the application? You can also copy all opencv dlls in the program folder to check that quickly...
answered Nov 12 '18 at 13:29
L.C.
19012
Omg i forgot that x.x now, it works i get this error. "error assertion failed (size.width 0 && size.height 0)" but i resolve it with this: stackoverflow.com/questions/31341845/… thanks!!!!
– Siewdass Sf
Nov 12 '18 at 14:12
add a comment |
Imo the problem is not in your code, I just run it (using Qt5.5, Win10, openCV 4 and mingw64), even if I had to change cvNamedWindow to cv::namedWindow.
I have two hints:
- did you build openCV with mingw64? If not, do so.
- are the openCV dlls in the path when you run the application? You can also copy all opencv dlls in the program folder to check that quickly...
answered Nov 12 '18 at 13:29
L.C.
19012
Imo the problem is not in your code, I just run it (using Qt5.5, Win10, openCV 4 and mingw64), even if I had to change cvNamedWindow to cv::namedWindow.
I have two hints:
- did you build openCV with mingw64? If not, do so.
- are the openCV dlls in the path when you run the application? You can also copy all opencv dlls in the program folder to check that quickly...
answered Nov 12 '18 at 13:29
L.C.
19012
answered Nov 12 '18 at 13:29
L.C.
19012
answered Nov 12 '18 at 13:29
L.C.
19012
answered Nov 12 '18 at 13:29
L.C.
19012
19012
Omg i forgot that x.x now, it works i get this error. "error assertion failed (size.width 0 && size.height 0)" but i resolve it with this: stackoverflow.com/questions/31341845/… thanks!!!!
– Siewdass Sf
Nov 12 '18 at 14:12
add a comment |
Omg i forgot that x.x now, it works i get this error. "error assertion failed (size.width 0 && size.height 0)" but i resolve it with this: stackoverflow.com/questions/31341845/… thanks!!!!
– Siewdass Sf
Nov 12 '18 at 14:12
Omg i forgot that x.x now, it works i get this error. "error assertion failed (size.width 0 && size.height 0)" but i resolve it with this: stackoverflow.com/questions/31341845/… thanks!!!!
– Siewdass Sf
Nov 12 '18 at 14:12
Omg i forgot that x.x now, it works i get this error. "error assertion failed (size.width 0 && size.height 0)" but i resolve it with this: stackoverflow.com/questions/31341845/… thanks!!!!
– Siewdass Sf
Nov 12 '18 at 14:12
add a comment |
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The usual problem --
imshowwithoutwaitKey.– Dan Mašek
Nov 12 '18 at 16:34