Thanks for the response Notas. Appreciated.

If I link only release version (opencv_highgui240.lib) program works neither in release nor debug mode. It pops up this error which might be due to poor linking. The program has unexpectedly finished. C:\Users\ANURUDDHA.... *.exe exited with code -1073741515

If I link only debug version (opencv_highgui240d.lib) the same Assertion Failed error shows up (only in release mode again) Any ideas?

This image file is one of a sequence of images used for testing pedestrian detection algorithms.

Thanks again.

There is no isctype.c in OpenCV (at least not in 2.4.5), so I have no idea what the problem even is exactly, just that c is the cause. I told you to use the release lib ONLY in the release build and the debug ONLY in debug build. Don't mix it! Please answer my question about the videocapture class and the provided image file. And lastly, show us the relevant code that produces this behaviour! Without seeing your code, how could we even think about finding the error?

Yes, I did use relevant libs in relevant builds (opencv_highgui240d.lib in debug build and opencv_highgui240.lib in release build). As it did not help, I happened to try out both types of libs in both build (which is kinda weird).

I use VideoCapture to open videos/image sequences. Above one is one of such a image sequence.

Here is the code.. So simple, just VideoCapture.

.pro file is as above (only opencv_highgui240.lib this time)

mainwindow.h

include <QMainWindow>

include <opencv2/highgui/highgui.hpp>

namespace Ui { class MainWindow; }

class MainWindow : public QMainWindow { Q_OBJECT

public: explicit MainWindow(QWidget *parent = 0); ~MainWindow();

private: Ui::MainWindow *ui; cv::VideoCapture vcap; };

oops.. sorry about the formatting.. :(

mainwindow.cpp

include "mainwindow.h"

include "ui_mainwindow.h"

MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent), ui(new Ui::MainWindow)

{

ui->setupUi(this); 

vcap.open("C:/Users/ANURUDDHA/pedestrians/ThreePastShop2cor.mpg");

}

MainWindow::~MainWindow() {

delete ui;

}

Can't edit posts.. Internal error.. Sorry for the formatting again..