En el.pro expediente:

QT       += core

QT       -= gui

TARGET    = latihan_2
CONFIG   += console
CONFIG   -= app_bundle

TEMPLATE = app

SOURCES += main.cpp

INCLUDEPATH += E:\OpenCV\OpenCV\opencv\build\include

LIBS += E:\OpenCV\OpenCV\opencv\build\x86\mingw\lib\libopencv_core246.dll.a
LIBS += E:\OpenCV\OpenCV\opencv\build\x86\mingw\lib\libopencv_highgui246.dll.a
LIBS += E:\OpenCV\OpenCV\opencv\build\x86\mingw\lib\libopencv_imgproc246.dll.a
LIBS += E:\OpenCV\OpenCV\opencv\build\x86\mingw\lib\libopencv_features2d246.dll.a
LIBS += E:\OpenCV\OpenCV\opencv\build\x86\mingw\lib\libopencv_calib3d246.dll.a

Enmain.cpp:

#include <opencv2/core/core.hpp>
#include <opencv2/highgui/highgui.hpp>

using namespace cv;

int main(){
    //read image
    Mat image = imread("img.jpg", 1);
    //create image window named "My image"
    namedWindow("My Image", CV_WINDOW_AUTOSIZE);
    //show the image on window
    imshow("My image", image);
    //wait key for 5000ms
    waitKey(5000);
    return 1;
    }

Cuando presiono Ejecutar, no hay error, pero solo muestra una ventana negra llamadaqtcreator_process_stub.exe.

¿Por qué la ventana "Mi imagen" no aparece y muestra el archivo img.jpg? Yo uso Qt creator 2.8.1, basado en Qt 5.1.1, y openCV-2.4.6.0.