Weird lines on camera feed with Opencv + Irrlicht on Texture Mapping

Question

I've Been trying to texturemap Irrlicht 3d model with Opencv Camera for an augmented reality project, Im using irrlicht 1.8.1 and opencv 2.4.9, and i almost got the textureMapping done, but the problem is there are weird lines coming in the camera feed and its below 4fps and the output appears as in this screenshot (Below) :

I Have the Following code that does this:

 #include <irrlicht.h>
 #include "driverChoice.h"
 #include <opencv/cv.h>
 #include <opencv/cxcore.h>
 #include <opencv/highgui.h>
 #include <time.h>
 #include <sys/timeb.h> 
 #include <opencv2\highgui\highgui.hpp>
 #include <IGUIEnvironment.h>

 using namespace cv;
 using namespace irr;
 using namespace core;
 using namespace scene;
 using namespace video;
 using namespace io;
 using namespace gui;

 #ifdef _MSC_VER
 #pragma comment(lib, "Irrlicht.lib")
 #endif

 #ifdef _IRR_WINDOWS_
 #pragma comment(lib, "Irrlicht.lib")
 #pragma comment(linker, "/subsystem:windows /ENTRY:mainCRTStartup")
 #endif


 int main()
 {
 IrrlichtDevice *device = createDevice(video::EDT_OPENGL, dimension2d<s32>     (640 , 480), 16, false, true /* shadow */, false);
if (!device)
    return 1;
device->setWindowCaption(L"Hello World! - Irrlicht Engine Demo");
IVideoDriver* driver = device->getVideoDriver();
ISceneManager* smgr = device->getSceneManager();
IGUIEnvironment* guienv = device->getGUIEnvironment();
ITexture* frame_tex = driver->addTexture(vector2d<s32>(640, 480), "video_stream");
guienv->addStaticText(L"Hello World! This is the Irrlicht Software renderer!",
    rect<s32>(10,10,260,22), true);
IAnimatedMesh* mesh = smgr->getMesh("E:/Akshay/VS2012Projects/IrrlichtDemoApp/IrrlichtDemoApp/ratamahatta.md2");
if (!mesh)
{
    device->drop();
    return 1;
}
IAnimatedMeshSceneNode* node = smgr->addAnimatedMeshSceneNode( mesh );
if (node)
{
    node->setMaterialFlag(EMF_LIGHTING, false);
    node->setMD2Animation(scene::EMAT_STAND);
    node->setMaterialTexture( 0, driver->getTexture("E:/Akshay/VS2012Projects/IrrlichtDemoApp/IrrlichtDemoApp/ctf_r.png") );
}   
smgr->addCameraSceneNode(0, vector3df(20,30,-50), vector3df(0,5,0));
while(device->run())
{
VideoCapture capture(0);
Mat camera_frame;


if( cv::waitKey(50) >= 0 ) break;
if( !capture.grab() )
{
    std::cout << "Unable to grab camera frame\n";
}
capture >> camera_frame;

if( ! camera_frame.empty() )
{
    //exception here
    unsigned char *tex_buf = (unsigned char*)frame_tex->lock();
    unsigned char *frame_buf = camera_frame.data;
    // Convert from RGB to RGBA
    for(int y=0; y < camera_frame.rows; y++) {
        for(int x=0; x < camera_frame.cols; x++) {
            *(tex_buf++) = *(frame_buf++);
            *(tex_buf++) = *(frame_buf++);
            *(tex_buf++) = *(frame_buf++);
            *(tex_buf++) = 255;
        }
    }
    frame_tex->unlock();

    driver->beginScene(true, true, SColor(255,100,101,140));

    driver->draw2DImage(frame_tex, core::rect<s32>(0,0,640,480),
        core::rect<s32>(0,0,480,640));

    smgr->drawAll();
    guienv->drawAll();

    driver->endScene();
}
}

device->drop();
}

Any help would be greatly appreciated!

Thanks in advance!

Answer 1

I Solved the issue, The problem was with my laptop, i tried doing this in another pc and its working fine. Its because of the s32 , i changed it to u32 and it works fine now. thanks all for your help!