SIFT  1.1.2
Data Structures
Here are the data structures with brief descriptions:
 Cdetection_dataHolds feature data relevant to detection
 CfeatureStructure to represent an affine invariant image feature
 Ckd_nodeNode in a k-d tree
 Cmin_pqMinimizing priority queue
 Cpq_nodeElement in a minimizing priority queue
 Cransac_dataHolds feature data relevant to ransac