[1] Zheng T X, Huang S, Li Y F et al. Key techniques for vision based 3D reconstruction: a review[J]. Acta Automatica Sinica, 46, 631-652(2020).

[2] Ding W D, Xu D, Liu X L et al. Review on visual odometry for mobile robots[J]. Acta Automatica Sinica, 44, 385-400(2018).

[3] Xu G F, Zeng J C, Liu X X. Visual odometer based on optical flow method and feature matching[J]. Laser & Optoelectronics Progress, 57, 201501(2020).

[4] Zhang T, Chen H, Yan J et al. Binocular visual odometry based on bi-direction reprojection[J]. Journal of Chinese Inertial Technology, 26, 752-759(2018).

[5] Chen Z F, Wu Q Y, Chen S Z et al. Image registration based on spectral and spatial feature matching[J]. Laser & Optoelectronics Progress, 57, 021005(2020).

[6] Jia D, Zhu N D, Yang N H et al. Image matching methods[J]. Journal of Image and Graphics, 24, 677-699(2019).

[7] Lowe D G. Distinctive image features from scale-invariant keypoints[J]. International Journal of Computer Vision, 60, 91-110(2004). http://doi.ieeecomputersociety.org/resolve?ref_id=doi:10.1023/B:VISI.0000029664.99615.94&rfr_id=trans/tp/2008/10/ttp2008101683.htm

[8] Li D, Sun H T, Wang H L. An improved SIFT algorithm for image stereo matching[J]. Journal of Southwest Jiaotong University, 50, 490-496(2015).

[9] Azeem A, Sharif M, Shah J H et al. Hexagonal scale invariant feature transform (H-SIFT) for facial feature extraction[J]. Journal of Applied Research and Technology, 13, 402-408(2015).

[10] Huang F H, Mao Z Y, Shi W Z. ICA-ASIFT-based multi-temporal matching of high-resolution remote sensing urban images[J]. Cybernetics and Information Technologies, 16, 34-49(2016).

[11] Xia C L, Wei P. An improved SIFT descriptor based on in-out region division[C]. //2017 IEEE 2nd International Conference on Signal and Image Processing (ICSIP), August 4-6, 2017, Singapore., 101-105(2017).

[12] Xiao C B, Feng D Z, Feng X W. Fast RANSAC algorithm with resample optimization[J]. Journal of Computer-Aided Design & Computer Graphics, 28, 606-613(2016).

[13] Cheng X H, Li J J. Optimized image feature matching algorithm based on motion smoothness and RANSAC[J]. Journal of Chinese Inertial Technology, 27, 765-770(2019).

[14] Yang Q N, Ma T L, Yang C K et al. RANSAC image matching algorithm based on optimized sampling[J]. Laser & Optoelectronics Progress, 57, 101104(2020).

[15] Liu Y, Feng R, Zhang H. Keypoint matching by outlier pruning with consensus constraint[C]. //2015 IEEE International Conference on Robotics and Automation (ICRA), May 26-30, 2015, Seattle, WA, USA., 5481-5486(2015).

[16] Zheng F, Liu Y H. Keypoint matching outlier removal with 3DMP histogram voting[C]. //2018 13th World Congress on Intelligent Control and Automation (WCICA), July 4-8, 2018, Changsha, China., 353-358(2018).

[17] Li C H, Shi H, Li Z J. Point cloud registration method based on combination of convolutional neural network and improved Harris-SIFT[J]. Laser & Optoelectronics Progress, 57, 201102(2020).

[18] Zhang L T, Huang X L, Lu L L et al. Fast Harris corner detection based on gray difference and template[J]. Chinese Journal of Scientific Instrument, 39, 218-224(2018).

[19] Su L Y, Li X P, Yao L S. An improved new algorithm for SIFT feature extraction[J]. Journal of Huazhong University of Science and Technology (Natural Science Edition), 41, 396-398(2013).

[20] Miao Q Q. Key frame extraction of hysteroscopy videos based on image quality and attention[J]. Laser & Optoelectronics Progress, 56, 061004(2019).