Kinect SDK and openCV image processing throwing an unhandled exception error

Hi all, im very new to programing and playing around with both opencv and the kinect sdk and was just looking for alittle help.

I have managed, by following the sdk examples, display the depth stream and RGB stream of the kinect using openCv, however now i cant seem to do any image processing on the depth stream with out getting an Unhandled exception error.

The error I keep getting states

Unhandled exception at 0x75acb9bc in AdvancedTopic1.exe: Microsoft C++ exception: cv::Exception at memory location 0x002bf41c..

Thanks for any help in advanced

Any way this is my code so far:

//Create Depth Image
int createDepthImage(HANDLE h, IplImage* depth)
{
const NUI_IMAGE_FRAME * pImageFrame = NULL;
HRESULT hr = NuiImageStreamGetNextFrame(h, 0, &pImageFrame);

if (FAILED (hr))
{ 
cout << "Create Depth Image Failed\n";
//system ("PAUSE");
}

NuiImageBuffer * pTexture = pImageFrame ->pFrameTexture;
KINECT_LOCKED_RECT LockedRect;
pTexture->LockRect (0, &LockedRect, NULL, 0);

if (LockedRect.Pitch != 0)
{
USHORT * pBuff = (USHORT*) LockedRect.pBits;
for(int i=0; i<(320*240); i++)
{

BYTE index = pBuff[i]&0x07;
USHORT realDepth = (pBuff[i]&0xFFF8)>>3;
BYTE scale = 255 - (BYTE)(256*realDepth/0x0fff);
buf[CHANNEL*i] = buf[CHANNEL*i+1] =buf[CHANNEL *i+2] =0;
switch(index)
{
case 0:
buf[CHANNEL*i] = scale/2;
buf[CHANNEL*i+1] = scale/2;
buf[CHANNEL*i+2]=scale/2;
break;

case 1:
buf[CHANNEL*i]=scale;
break;

case 2:
buf[CHANNEL*i+1]=scale;
break;

case 3:
buf[CHANNEL*i+2]=scale;
break;

case 4:
buf[CHANNEL*i]=scale;
buf[CHANNEL*i+1]=scale;
break;

case 5:
buf[CHANNEL*i]=scale;
buf[CHANNEL*i+2]=scale;
break;

case 6:
buf[CHANNEL*i+1]=scale;
buf[CHANNEL*i+2]=scale;
break;
case 7:
buf[CHANNEL*i]=255-scale/2;
buf[CHANNEL*i+1]=255-scale/2;
buf[CHANNEL*i+2]=255-scale/2;
break;
}

}
cvSetData(depth, buf, 320*CHANNEL);
}

NuiImageStreamReleaseFrame(h, pImageFrame);
cvShowImage("Depth Image",depth);
cvCvtColor(depth, depth, CV_RGB2GRAY);
return 0;
}
<pre lang="c++">

The error i keep getting states

Unhandled exception at 0x75acb9bc in AdvancedTopic1.exe: Microsoft C++ exception: cv::Exception at memory location 0x002bf41c..

Thanks for any help in advanced

Tags: C++, Kinect, Image Processing