// calculate filter response

      if(params.split_coeff)

        calcResponse(alphaf,alphaf_den,kf,response, spec, spec2);

      else

        calcResponse(alphaf,kf,response, spec);

      // extract the maximum response

      minMaxLoc( response, &minVal, &maxVal, &minLoc, &maxLoc );

      if (maxVal < params.detect_thresh)

      {

          return false;

      }

      roi.x+=(maxLoc.x-roi.width/+);

      roi.y+=(maxLoc.y-roi.height/+);

    // update the bounding box

    boundingBox.x=(resizeImage?roi.x*:roi.x)+(resizeImage?roi.width*:roi.width)/;

    boundingBox.y=(resizeImage?roi.y*:roi.y)+(resizeImage?roi.height*:roi.height)/;

    boundingBox.width = (resizeImage?roi.width*:roi.width)/;

    boundingBox.height = (resizeImage?roi.height*:roi.height)/;