otsu_params.SetValueAsUint( "NumberOfHistogramBins", 100 );
otsu_params.SetValueAsReal( "InsideValue", 255 );
otsu_params.SetValueAsReal( "OutsideValue", 0 );
otsu_params.SetValueAsUint( "NumberOfHistogramBins", 100 );
otsu_params.SetValueAsReal( "InsideValue", 255 );
otsu_params.SetValueAsReal( "OutsideValue", 0 );