[1]TANG Kun,HAN Bin.A SIFT matching algorithm based on the distance to reference point[J].CAAI Transactions on Intelligent Systems,2015,10(3):376-380.[doi:10.3969/j.issn.1673-4785.201311020]
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CAAI Transactions on Intelligent Systems[ISSN 1673-4785/CN 23-1538/TP] Volume:
10
Number of periods:
2015 3
Page number:
376-380
Column:
学术论文—机器学习
Public date:
2015-06-25
- Title:
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A SIFT matching algorithm based on the distance to reference point
- Author(s):
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TANG Kun1; HAN Bin2
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1. School of Transportation, Southeast University, Nanjing 210096, China;
2. School of Computer Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang 212000, China
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- Keywords:
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scale invariant feature transform (SIFT); distance to reference point (DRP) algorithm; feature point matching; nearest neighbor; reference point
- CLC:
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TP319
- DOI:
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10.3969/j.issn.1673-4785.201311020
- Abstract:
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To address the high time cost of feature point matching in scale invariant feature transform (SIFT), a new SIFT feature point matching algorithm based on the distance to reference point—DRP algorithm is put forward. Firstly, distances from the reference point to every feature point to be matched is computed using DRP algorithm. Then, these distances computed previously is ordered and saved in a dataset named as distance of ordering. Next, distances from the reference point to the feature point to be queried is also computed. After that, the nearest neighbor of the distance in distance of ordering is retrieved with binary search and returned as index of center. Finally, the nearest neighbor of feature point to be queried is searched one by one in a certain range whose center is index of center. It is proven by experiment tested on ACF (affine covariant features) pictures from VGG(visual geometry group) laboratory that DRP algorithm can effectively decrease the time cost of SIFT feature points matching without loss of matching results compared with the classical SIFT algorithm.