docs: public static GrayF64 convolve(GrayF64 integral ,
  								   IntegralKernel kernel ,
  								   GrayF64 output )
  	{
  		output = InputSanityCheck.checkDeclare(integral,output);
  
  		if(BoofConcurrency.USE_CONCURRENT) {
  			ImplIntegralImageConvolve_MT.convolve(integral, kernel, output);
  		} else {
  			ImplIntegralImageConvolve.convolve(integral, kernel, output);
  		}
  
  		return output;
  	}