exited with code -1073741819 error

[high_flyer]

I tried the debugger and found nothing.

Use the debugger to get the line which crashes, and post the code around it, or the whole function which contains that line.

[arpspatel]

using the debugger, the line with cvColor(...) gives error.

void theGui::slDeanerize(){
if(inName->isEmpty() || repName->isEmpty()){
QMessageBox::information(this,tr("ReplaceWithDeane r"),tr("Parameters:\tInput/Replace Image File Missing, Open and Try Again"));
return;
}
//Init Application
Mat img;
String cascadeName = "./cascadeMain.xml";
CascadeClassifier cascade;
double scale = 1;

if( !cascade.load( cascadeName ) )
{
QBoxError("Cascade Error: Could not load cascade file, please check the path");
}

img = imread(inName->toStdString() , 1 );
vector<Rect> faces;

//Detect Faces Here ------------
Mat gray, smallImg( cvRound (img.rows/scale), cvRound(img.cols/scale), CV_8UC1 );

cvtColor( img, gray, CV_BGR2GRAY ); The debugger shows this line, but i use the same method in command line version and it works fine
cv::resize( gray, smallImg, smallImg.size(), 0, 0, INTER_LINEAR );
equalizeHist( smallImg, smallImg );

cascade.detectMultiScale( smallImg, faces,
1.1, 2, 0
//|CV_HAAR_FIND_BIGGEST_OBJECT
//|CV_HAAR_DO_ROUGH_SEARCH
|CV_HAAR_SCALE_IMAGE
,
Size(30, 30) );
//----------------END

//Replace Faces Here ------------
int replaceMode = checkRadioButtons();
int facesTotal = faces.size();
int replaceTotal = replaceCountCalc(replaceMode, facesTotal);
outMat = img;
Mat crImgMat = imread(repName->toStdString(),1);
for (int i=0; i < replaceTotal; i++){
Mat roi(outMat,faces.at(i));
if((faces.at(i).size() != crImgMat.size())){
//IplImage *newImage = cvCreateImage(cvSize(faces.at(i).width,faces.at(i) .height), replaceImage->depth, replaceImage->nChannels);
Mat newMat(crImgMat.size(), crImgMat.type());
cv::resize(crImgMat,newMat,faces.at(i).size());
//cvResize(replaceImage, newImage, CV_INTER_CUBIC);
crImgMat = newMat;
}
roi = crImgMat;
}
//----------------End
IplImage outImg = outMat;
//setImageLabel(outputImageLabel, outImg);
outName = new QString(QFileInfo(inName->toStdString().c_str()).absolutePath() + "/deaner" + QFileInfo(inName->toStdString().c_str()).fileName());
}

Thanks
Arpit

[SABROG]

Hi.
"exited with code -1073741819 error". I tried the debugger and found nothing. mr. google said that i had an uninitialised value which i am trying to access and so it gives me error. I have written my code nearly 4-5 times from the working command line version but it just doesnt want to work.

-1073741819 - 0xC0000005 - STATUS_ACCESS_VIOLATION

Test what return imread():

img = imread(inName->toStdString() , 1 );
Q_ASSERT(img.data);

img = imread(inName->toStdString() , 1 );
Q_ASSERT(img.data);

To copy to clipboard, switch view to plain text mode 

[arpspatel]

what do you mean by test return?

i tried Q_ASSERT(img.data);
same 1073641819 error.. and i dont think its imread as i can read the image fine.

[arpspatel]

I have attached the output of the debugger where the program stops responding.

Thanks
Arps

[high_flyer]

This line:

Mat gray, smallImg( cvRound (img.rows/scale), cvRound(img.cols/scale), CV_8UC1 );

Mat gray, smallImg( cvRound (img.rows/scale), cvRound(img.cols/scale), CV_8UC1 );

To copy to clipboard, switch view to plain text mode 

Should not even compile!

Should it be maybe?:

Mat gray;
 smallImg( cvRound (img.rows/scale), cvRound(img.cols/scale), CV_8UC1 );

Mat gray;
 smallImg( cvRound (img.rows/scale), cvRound(img.cols/scale), CV_8UC1 );

To copy to clipboard, switch view to plain text mode 

In addition, put a break point on the crashing line:

cvtColor( img, gray, CV_BGR2GRAY );

cvtColor( img, gray, CV_BGR2GRAY );

To copy to clipboard, switch view to plain text mode 

And look at 'img' if it is valid.

[arpspatel]

This line:

Mat gray, smallImg( cvRound (img.rows/scale), cvRound(img.cols/scale), CV_8UC1 );

Mat gray, smallImg( cvRound (img.rows/scale), cvRound(img.cols/scale), CV_8UC1 );

To copy to clipboard, switch view to plain text mode 

Should not even compile!

Should it be maybe?:

Mat gray;
 smallImg( cvRound (img.rows/scale), cvRound(img.cols/scale), CV_8UC1 );

Mat gray;
 smallImg( cvRound (img.rows/scale), cvRound(img.cols/scale), CV_8UC1 );

To copy to clipboard, switch view to plain text mode 

In addition, put a break point on the crashing line:

cvtColor( img, gray, CV_BGR2GRAY );

cvtColor( img, gray, CV_BGR2GRAY );

To copy to clipboard, switch view to plain text mode 

And look at 'img' if it is valid.

Mat gray, smallImg( cvRound (img.rows/scale), cvRound(img.cols/scale), CV_8UC1 );

Mat gray, smallImg( cvRound (img.rows/scale), cvRound(img.cols/scale), CV_8UC1 );

To copy to clipboard, switch view to plain text mode 

This line compiles fine..

cvtColor( img, gray, CV_BGR2GRAY );

cvtColor( img, gray, CV_BGR2GRAY );

To copy to clipboard, switch view to plain text mode 

It was this line which was causing problems, don't know why? I couldn't even get an answer from OpenCV forums. I just changed the coding myself to convert img to grayscale manually with direct pixel access..

I probably think this is issue with Qt+OpenCV2.0, not working together with certain functions.. (maybe overloaded somewhere)

Thanks for your help.

[high_flyer]

It was this line which was causing problems, don't know why?

May be you need to initialize 'gray' to be the same size as smallImg.
What happens if you do:

Mat gray( cvRound (img.rows/scale), cvRound(img.cols/scale), CV_8UC1 /*or what ever format that makes sense*/ );
Mat smallImg( cvRound (img.rows/scale), cvRound(img.cols/scale), CV_8UC1 );
...
cvtColor( img, gray, CV_BGR2GRAY );

Mat gray( cvRound (img.rows/scale), cvRound(img.cols/scale), CV_8UC1 /*or what ever format that makes sense*/ );
Mat smallImg( cvRound (img.rows/scale), cvRound(img.cols/scale), CV_8UC1 );
...
cvtColor( img, gray, CV_BGR2GRAY );

To copy to clipboard, switch view to plain text mode 

Also, in the documentation fo cvtColor here:
http://www710.univ-lyon1.fr/~bouakaz...ecl_cvCvtColor
CV_8UC1 is not specified, are you sure it is a legal parameter?