459       const float accumulated_min = *std::min_element(output_ref.cbegin(), output_ref.cend());  variable
461       const float accumulated_range = accumulated_max - accumulated_min;
462       const float output_min = accumulated_min + float(qmin()) / 255.0f * accumulated_range;
556       const float accumulated_min = *std::min_element(output_ref.cbegin(), output_ref.cend());  variable
558       const float accumulated_range = accumulated_max - accumulated_min;
559       const float output_min = accumulated_min + float(qmin()) / 255.0f * accumulated_range;
655       const float accumulated_min = *std::min_element(output_ref.cbegin(), output_ref.cend());  variable
657       const float accumulated_range = accumulated_max - accumulated_min;
658       const float output_min = accumulated_min + float(qmin()) / 255.0f * accumulated_range;
753       const float accumulated_min = *std::min_element(output_ref.cbegin(), output_ref.cend());  variable
755       const float accumulated_range = accumulated_max - accumulated_min;
756       const float output_min = accumulated_min + float(qmin()) / 255.0f * accumulated_range;