IppFGHistogramModel

[douglaswinfield]

I'm still having issues with IppFGHistogramModel....

The code below seems to "basically" work in extracting moving objects. However, I'm not using **ppState as the manual indicates -- so I get a compiler warning "unreferenced local variable". I've been also changing some of the parameters such as pModel.updBGRef and the results don't seem to change. As I posted earlier (and got no replies ), the background image in after calling ippiForegroundHistogramUpdate several times is nothing.

I'm sure I'm doing something wrong. Any ideas? Any sample code? Am I the only one trying to use this function?

THANKS

//////////////////////////////////////////////////////////////////////////////////
IppFGHistogramModel pModel;
IppFGHistogramState_8u_C1R *pState;
IppFGHistogramState_8u_C1R **ppState;

status = ippiForegroundHistogramInitAlloc_8u_C1R(imgIPP, width, ROI, &pModel, &pState);
statusString = ippGetStatusString( status );
status = ippiForegroundHistogram_8u_C1R(imgIPP, width, foreground, width, ROI, pState);
statusString = ippGetStatusString( status );

status = ippiForegroundHistogramUpdate_8u_C1R(imgIPP, width, foreground, width, background, width, ROI, pState);
statusString = ippGetStatusString( status );
//
//Get another image --> imgIPP2
//
status = ippiForegroundHistogram_8u_C1R(imgIPP2, width, foreground, width, ROI, pState);
statusString = ippGetStatusString( status );
status = ippiForegroundHistogramUpdate_8u_C1R(imgIPP2, width, foreground, width, background, width, ROI, pState);
statusString = ippGetStatusString( status );
/////////////////////////////////////////////////////////////////////

[dvj1]

I'm doing something similar and I am having just as much difficulty. The parameters don't seem to influence the results properly, and the model doesn't seem to update correctly.

[douglaswinfield]

Hi,
I know what you mean. I'm wondering if any of the developers have run an example?

[Alexander_T_Intel]

Hi.

There is a sample code in attach. It uses IPP (BGFG functions) and OpenCV (input, output).

Alexander

[douglaswinfield]

Alexander,
Thanks for the example - it's works well.
I've used the OpenCV version of bgfg detection but found it to be slow. This runs much faster.
Cheers :)