public static float convolveSparse(GrayF32 integral , IntegralKernel kernel , int x , int y )
	{
		return ImplIntegralImageOps.convolveSparse(integral, kernel, x, y);
	}
public static float convolveSparse ( GrayF32 integral , IntegralKernel kernel , int x , int y ) { return ImplIntegralImageOps . convolveSparse ( integral , kernel , x , y ) ; }
Convolves a kernel around a single point in the integral image.

@param integral Input integral image. Not modified.
@param kernel Convolution kernel.
@param x Pixel the convolution is performed at.
@param y Pixel the convolution is performed at.
@return Value of the convolution