std::string sOptFilterMethodName (ProcessSignal::convertFilterMethodIDToName (ProcessSignal::FILTER_METHOD_CONVOLUTION));
std::string sOptFilterGenerationName (ProcessSignal::convertFilterGenerationIDToName (ProcessSignal::FILTER_GENERATION_DIRECT));
std::string sOptInterpName (Backprojector::convertInterpIDToName (Backprojector::INTERP_LINEAR));
std::string sOptFilterMethodName (ProcessSignal::convertFilterMethodIDToName (ProcessSignal::FILTER_METHOD_CONVOLUTION));
std::string sOptFilterGenerationName (ProcessSignal::convertFilterGenerationIDToName (ProcessSignal::FILTER_GENERATION_DIRECT));
std::string sOptInterpName (Backprojector::convertInterpIDToName (Backprojector::INTERP_LINEAR));