directional line element feature

extended feature tree

Feature Element

Feature tree

Feature Tree Quantization

feature tree representation

recursive feature element

Element-tree

Finite Element Element

distributions of tree-tree distances

tree-tree

scale invariant feature transform (SIFT) feature

scale invariant feature transform SIFT feature

scale invariant feature transform SIFT feature poi

scale invariant feature transform(SIFT)feature point

balances of oxygen element and carbon element

boundary element and finite element

conservation element and solution element method

coupled element free Galerkin(EFG) and finite element(FE) method