[solved] Linking Nokia Qt with OpenVC

tanclanship

Gerolf I have done the following list. And now it shows no error. The emulator pop up as usual once debug.Alright so far so good.
Cincirin do you have any simple coding for using OpenCV. so i could test its working

@ IplImage *img = cvLoadImage("funny-pictures-cat-goes-pew.jpg");
cvNamedWindow("Image:",1);
cvShowImage("image:",img);

    cvWaitKey();
    cvDestroyWindow("Image:");
    cvReleaseImage(&img);
    
    return 0;

@

The code above provided using CVNamedWindow cannot be use in the QTSimulator.

cincirin

You can download CMake from "here":http://www.cmake.org/cmake/resources/software.html
But I'm not sure if you really want to use QtCreator for building your application and linked this with OpenCV library.
CMake is cross-platform, open-source build system. For windows you have to choose for generating binaries (projects) between Visual Studio editions that you have them installed (2008, 2010, etc), CodeBlocks, makefiles, etc...
As I said, I chose to compile the entire OpenCV library (all modules) with QtCreator for easy linked, debug, integrate in my application. QtCreator qmake project is not in CMake list. Therefore, each qmake project must be written manually.
Fortunately for windows users, a solution can be:

generate VC projects with CMake
for every *.vcproj generated by CMake, manually create QtCreator project (static or dynamic library), and put in them all sources and headers from corresponding *.vcproj file.

Other solution, without using QtCreator is:

download VC express 2008 (or if you have non-free editions, is better, because you can install Qt plug-in for VC)
choose VC 2008 from CMake list
download Qt libraries 4.7.2 for windows, it comes with VC2008 pre-compiled libraries
use VC 2008 for develop your app

cincirin

Sure, for the moment I use OpenCV for calibrate lens of the Logitech 1080p webcam two cameras and put them in video stream. I don't know if you have a webcamera, but a sample program looks like :

// init camera capture
CvCapture* cameraCapture = cvCaptureFromCAM(0);

// start a 0.1-second QObject timer
timerID = startTimer(100);

// ... and in your timerEvent ...
IplImage* image = cvQueryFrame(cameraCapture);

// you can convert IplImage in QImage "easy":http://www.qtcentre.org/threads/11655-OpenCV-integration

// when finish, kill timer and release capture
killTimer(timerID);
cvReleaseCapture(&camerasCapture);

MAMartins

[quote author="Scylla" date="1300001278"]On my mac I have just this in my *.pro file
@INCLUDEPATH += /usr/local/include/opencv
LIBS += -lopencv_highgui@
Take a look "here":http://qt-apps.org/content/show.php/Qt+Opencv+webcam+viewer?content=89995[/quote]

Scylla, how did you installed the opencv? i've downloaded an opencv 2.0 dmg from their website but I don't have the /usr/local/include/opencv

I have it on my framework folder:
/System/Library/Frameworks/OpenCV.framework

how can I link it?

thanks a lot

Scylla

I have downloaded the source "OpenCV-2.2.0.tar.bz2", unpacked, compiled and installed the libs (ccmake ., make, sudo make install). Nothing more!

MAMartins

ok i've figured it out. i've downloaded the 2.0 dmg and installed it on the framework folder.

to access it i've added this to .pro:

LIBS += -framework OpenCV

is there any major diference between 2.0 and 2.2?

Polto

www.remnum.com
you can find the full steps to build and link opencv 2.2 with qt
on windows and mac system
with project using qthread

MAMartins

thanks, already solved it ;)

DenisKormalev

If you've solved problem, please mark your thread as [solved]

MAMartins

this is not my thread :P

mgran

[quote author="Denis Kormalev" date="1303315410"]If you've solved problem, please mark your thread as [solved][/quote]

I'm on it :)