NormHistogramCostExtractorImpl  125 modules/shape/src/hist_cost.cpp void NormHistogramCostExtractorImpl::buildCostMatrix(InputArray _descriptors1, InputArray _descriptors2, OutputArray _costMatrix)
NormHistogramCostExtractorImpl  169 modules/shape/src/hist_cost.cpp     return Ptr <HistogramCostExtractor>( new NormHistogramCostExtractorImpl(flag, nDummies, defaultCost) );