EMDHistogramCostExtractorImpl  250 modules/shape/src/hist_cost.cpp void EMDHistogramCostExtractorImpl::buildCostMatrix(InputArray _descriptors1, InputArray _descriptors2, OutputArray _costMatrix)
EMDHistogramCostExtractorImpl  306 modules/shape/src/hist_cost.cpp     return Ptr <HistogramCostExtractor>( new EMDHistogramCostExtractorImpl(flag, nDummies, defaultCost) );