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ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2018, Vol. 39 ›› Issue (5): 321727-321727.doi: 10.7527/S1000-6893.2018.21727

• Electronics and Electrical Engineering and Control • Previous Articles     Next Articles

Statistical optimization feature matching algorithm based on epipolar geometry

ZHAO Chunhui, FAN Bin, TIAN Limin, HU Jinwen, PAN Quan   

  1. School of Automation, Northwestern Polytechnical University, Xi'an 710072, China
  • Received:2017-09-06 Revised:2018-01-24 Online:2018-05-15 Published:2018-01-24
  • Supported by:
    National Natural Science Foundation of China (61473230, 61603303); Aeronautical Science Foundation (2014ZC-53030); Natural Science Foundation of Shaanxi Province (2017JM6027, 2017JQ6005); State Key Laboratory of Geo-information Engineering under grant agreement (SKLGIE2015-M-3-4)

Abstract: To solve the problems of small matching number and poor matching with repetitive structures in image matching based on feature points, a statistical optimization feature matching algorithm is proposed based on the epipolar geometry. As correct matching feature points satisfy the epipolar constraint, the feature points' search region can be reduced and the mismatches caused by repetitive structures can be avoided. Our approach first uses a small sample of features to estimate the fundamental matrix between images and leverages it for guiding feature matching based the epipolar constraint model. Then we use the statistical optimization method based on scale and main direction information of feature points to further eliminate mismatches and get the final matching results. Experimental results show that our algorithm also has good robustness against image rotation and scale transformation, and the matching precision and number have been greatly improved. Our algorithm is also effective for image matching with repetitive structures.

Key words: feature matching, epipolar geometry, main direction, scale, Sampson distance

CLC Number: