LI Jia, SHENG Ye-hua, ZHANG Ka etc. Image matching of variable circular domain compass features[J]. Editorial Office of Optics and Precision Engineering, 2014,22(5): 1339-1346
LI Jia, SHENG Ye-hua, ZHANG Ka etc. Image matching of variable circular domain compass features[J]. Editorial Office of Optics and Precision Engineering, 2014,22(5): 1339-1346 DOI: 10.3788/OPE.20142205.1339.
Image matching of variable circular domain compass features
As existing image matching algorithms show the problems of high computational complexity and uncertainty in point-pair selection
a Variable Circular Domain Compass Matching (VCDCM) algorithm was proposed. After key-points being detected by four compasses
the variable circular receiving domain was used to choose the ideal point-pairs. Then
the point-pair set was divided into two subsets according to the distance of point-pairs.The subset of long-distance pairs was used to describe the direction of a key-point and that of short-distance pairs was used to build the descriptor of key-point. Finally
key-points were matched by Hamming distance instead of traditional Euclidean distance
while the match points were filtered with Random Sample Consensus (RANSAC) algorithm to avoid mismatches caused by the noise and moving objects. Comparative experiments between Scale Invariant Feature Transform (SIFT) and Binary Robust Independent Elementary Features (BRIEF) algorithms were performed on the robustness and efficiency. The experimental results show that the proposed algorithm is faster with high accuracy and stability.
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