DescriptorCollection  916 modules/features2d/include/opencv2/features2d.hpp     class CV_EXPORTS DescriptorCollection
DescriptorCollection  397 modules/features2d/src/matchers.cpp DescriptorMatcher::DescriptorCollection::DescriptorCollection()
DescriptorCollection  400 modules/features2d/src/matchers.cpp DescriptorMatcher::DescriptorCollection::DescriptorCollection( const DescriptorCollection& collection )
DescriptorCollection  406 modules/features2d/src/matchers.cpp DescriptorMatcher::DescriptorCollection::~DescriptorCollection()