C++ (Cpp) DImage::imfilter_hv Examples

Example #1

File: OpticalFlow.cpp Project: subtri/StreamGBHpp

//--------------------------------------------------------------------------------------------------------
//  function to compute dx, dy and dt for motion estimation
//--------------------------------------------------------------------------------------------------------
void OpticalFlow::getDxs(DImage &imdx, DImage &imdy, DImage &imdt, const DImage &im1, const DImage &im2)
{
	//double gfilter[5]={0.01,0.09,0.8,0.09,0.01};
	double gfilter[5]={0.02,0.11,0.74,0.11,0.02};
	//double gfilter[5]={0,0,1,0,0};
	if(1)
	{
		//DImage foo,Im;
		//Im.Add(im1,im2);
		//Im.Multiplywith(0.5);
		////foo.imfilter_hv(Im,gfilter,2,gfilter,2);
		//Im.dx(imdx,true);
		//Im.dy(imdy,true);
		//imdt.Subtract(im2,im1);
		DImage Im1,Im2,Im;
		
		im1.imfilter_hv(Im1,gfilter,2,gfilter,2);
		im2.imfilter_hv(Im2,gfilter,2,gfilter,2);
		Im.copyData(Im1);
		Im.Multiplywith(0.4);
		Im.Add(Im2,0.6);
		//Im.Multiplywith(0.5);
		//Im1.copyData(im1);
		//Im2.copyData(im2);
    
		Im.dx(imdx,true);
		Im.dy(imdy,true);
		imdt.Subtract(Im2,Im1);
	}
	else
	{
		// Im1 and Im2 are the smoothed version of im1 and im2
		DImage Im1,Im2;
		
		im1.imfilter_hv(Im1,gfilter,2,gfilter,2);
		im2.imfilter_hv(Im2,gfilter,2,gfilter,2);

		//Im1.copyData(im1);
		//Im2.copyData(im2);
    
		Im2.dx(imdx,true);
		Im2.dy(imdy,true);
		imdt.Subtract(Im2,Im1);
	}


	imdx.setDerivative();
	imdy.setDerivative();
	imdt.setDerivative();
}

Example #2

//--------------------------------------------------------------------------------------------------------
//  function to compute dx, dy and dt for motion estimation
//--------------------------------------------------------------------------------------------------------
void OpticalFlow::getDxs(DImage &imdx, DImage &imdy, DImage &imdt, const DImage &im1, const DImage &im2)
{
    // Im1 and Im2 are the smoothed version of im1 and im2
    DImage Im1,Im2;
    double gfilter[5]= {0.05,0.2,0.5,0.2,0.05};
    im1.imfilter_hv(Im1,gfilter,2,gfilter,2);
    im2.imfilter_hv(Im2,gfilter,2,gfilter,2);

    //Im1.copyData(im1);
    //Im2.copyData(im2);

    Im2.dx(imdx,true);
    Im2.dy(imdy,true);
    imdt.Subtract(Im2,Im1);
    imdx.setDerivative();
    imdy.setDerivative();
    imdt.setDerivative();
}