Problem qith OpenCV and Qt creator

[AlbertoAlegria]

I recently install Qt creator and link with OpenCV, thats my problem. I cant know if there are correctly linked. Also, when i compile a project, an error show a popup called SIAGBRT:
@
The inferior stopped because it received a signal from the Operating System.

Signal name :
SIGABRT
Signal meaning :
Aborted

@
But if i execute, Qt show me:
@
The program has unexpectedly finished.
@
BTW, i add my code in the main.cpp and the .pro file. Hope you help me :c

Main.cpp:
@#include "mainwindow.h"
#include <QApplication>

#include "opencv2/objdetect/objdetect.hpp"
#include "opencv2/highgui/highgui.hpp"
#include "opencv2/imgproc/imgproc.hpp"

#include <iostream>

using namespace std;
using namespace cv;

void rotate(Mat& src, double angle, Mat& dst)
{
char* wName = "hola";
int len = max(src.cols, src.rows);
Point2f pt(len/2., len/2.);
Mat r = getRotationMatrix2D(pt, angle, 1.0);

warpAffine(src, dst, r, Size(len, len));

namedWindow(wName, CV_WINDOW_AUTOSIZE);
imshow(wName, dst);

cvWaitKey(0);

}

int main(int argc, char *argv[])
{
Mat imgSrc;
Mat imgDst;

char* imageName = "ball.jpg";

imgSrc = imread(imageName, 1);

rotate(imgSrc, 30, imgDst);
return 0;

}

/*int main(int argc, char *argv[])
{
QApplication a(argc, argv); i coment this just to see if works :c
MainWindow w;
w.show();

return a.exec();

}
*/
@

.pro File:
@
#-------------------------------------------------

Project created by QtCreator 2014-03-27T13:08:30

#-------------------------------------------------

QT += core gui

greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

TARGET = rotation
TEMPLATE = app

SOURCES += main.cpp
mainwindow.cpp

INCLUDEPATH += /usr/local/include/opencv
INCLUDEPATH += /usr/local/include/opencv2

LIBS += -L/usr/local/lib
-lopencv_core
-lopencv_imgproc
-lopencv_highgui
-lopencv_ml
-lopencv_video
-lopencv_features2d
-lopencv_calib3d
-lopencv_objdetect
-lopencv_contrib
-lopencv_legacy
-lopencv_flann

HEADERS += mainwindow.h

FORMS += mainwindow.ui
@

My computer:
@
OS: Ubuntu 12.04 (Latest version)
OpenCV version: 2.4.8
Qt version: 5.2.1
Qt Creator version: 3.0.1
@

Please ignore OpenCV code, i compile in terminal and works.
PS: I use an image, and dont know if I need to import in the project, i just put inside the folder project
PS2: sorry for the english, im mexican :c

[SGaist]

Hi and welcome to devnet,

Not really a Qt question but: ball.jpg must be in the same folder as your executable (which is probably located in a shadow build) or you must give the fullpath to it.

[AlbertoAlegria]

ok, em... waht's a shadow build? i put my image in the same folder of my project, where my .pro file an main.cpp file are.

[SGaist]

The shadow build is where the compilation currently takes place (it avoids to pollute your source tree). Look in the project panel you'll see a QLineEdit named "Build directory", copy your image in the folder indicated there.

[AlbertoAlegria]

Ok, thanks, about linking wuth opencv, can you help me? thanks

[SGaist]

What is the exact error you are getting ?

[AlbertoAlegria]

I cant compile my OpenCV program in Qt, i post my OpenCV code and my .pro file. I dont know exactly waths happenned, I'm new in Qt, but in OpenCV I have a little bit more experience

[SGaist]

What error does your compiler give you ?

[burdos]

i have a problem I just downloaded the qt and also I want to use the opencv but I can't because it says
#-------------------------------------------------

Project created by QtCreator 2014-04-02T02:57:55

#-------------------------------------------------

QT += core gui

greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

TARGET = JanelaOpenCv
TEMPLATE = app
LIBS += -lopencv_core
-lopencv_highgui
SOURCES += main.cpp
mainwindow.cpp

HEADERS += mainwindow.h

FORMS += mainwindow.ui
it says that they cannot find the libraries I do not know how to kink them or how to start working with it thanks

[SGaist]

If OpenCV is not installed in a known path, you need to tell Qt where to find it.

Add
@LIBS += -L/path/to/OpenCV/libraries@

To your pro file

[burdos]

ok fine i did this
#-------------------------------------------------

Project created by QtCreator 2014-04-02T13:24:58

#-------------------------------------------------

QT += core

QT -= gui

TARGET = Consola
CONFIG += console
CONFIG -= app_bundle
LIBS += -L/path/to/OpenCV/libraries
TEMPLATE = app

SOURCES += main.cp

i have my openCv in the following path so how do i have to do set it to start using it
the path is the following
E:\Open Cv\opencv\build\x86\vc12\lib
so please help me how to do it i am new on it

[SGaist]

@LIBS += -LE:/OpenCV/opencv/build/x86/vc12/lib@

Forward slashes and avoid spaces in the path, it's known to be problematic

[burdos]

Oh ok thanks for the help so it runs now very well so it means that all the libraries in the folder can be used right??

[SGaist]

Yes it is right

[burdos]

i am trying to do run my code in this way
//objectTrackingTutorial.cpp

//Written by Kyle Hounslow 2013

//Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software")
//, to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense,
//and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

//The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

//THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
//FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
//LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
//IN THE SOFTWARE.

#include <sstream>
#include <string>
#include <iostream>
#include <opencv\highgui.h>
#include <opencv\cv.h>

using namespace cv;
//initial min and max HSV filter values.
//these will be changed using trackbars
int H_MIN = 0;
int H_MAX = 256;
int S_MIN = 0;
int S_MAX = 256;
int V_MIN = 0;
int V_MAX = 256;

but it says
E:\QT\Qt Projects\Project 2\Consola\Project_image\main.cpp:19: error: opencv\highgui.h: No such file or directory
#include <opencv\highgui.h>
^

E:\QT\Qt Projects\Project 2\Consola\Project image\main.cpp

so please how can i solve it

[SGaist]

Add the path of OpenCV's include.
Something like:

@INCLUDEPATH += E:/OpenCV/opencv/include@

[burdos]

i just did it but ok i have this code
QT += core gui

greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

TARGET = Project_image
TEMPLATE = app
INCLUDEPATH += E:/OpenCV/opencv/include
LIBS += -LE:/OpenCV/opencv/build/x86/vc12/lib
SOURCES += main.cpp
mainwindow.cpp
../../../project 1/objectTrackingTut.cpp
../../../project 1/objectTrackingTut.cpp
../../../project 1/objectTrackingTut.cpp

HEADERS += mainwindow.h

FORMS += mainwindow.ui

and in the main i have
#include <sstream>
#include <string>
#include <iostream>
#include <opencv\highgui.h>
#include <opencv\cv.h>

using namespace cv;
//initial min and max HSV filter values.
//these will be changed using trackbars
int H_MIN = 0;
int H_MAX = 256;
int S_MIN = 0;
int S_MAX = 256;
int V_MIN = 0;
int V_MAX = 256;
//default capture width and height
const int FRAME_WIDTH = 640;
const int FRAME_HEIGHT = 480;
//max number of objects to be detected in frame
const int MAX_NUM_OBJECTS=50;
//minimum and maximum object area
const int MIN_OBJECT_AREA = 2020;
const int MAX_OBJECT_AREA = FRAME_HEIGHTFRAME_WIDTH/1.5;
//names that will appear at the top of each window
const string windowName = "Original Image";
const string windowName1 = "HSV Image";
const string windowName2 = "Thresholded Image";
const string windowName3 = "After Morphological Operations";
const string trackbarWindowName = "Trackbars";
void on_trackbar( int, void* )
{//This function gets called whenever a
// trackbar position is changed

and i still have problems it says

#include <opencv\highgui.h> not such a file or directory i do not know why

[chfakht]

@SGaist please where can i found the build directory in QtCreator !!

[SGaist]

Look at the Projects panel, you have the "Build directory" path there