[1] [1] Liu Haitao, Guan Shengxiao, Qin Liang, et al.. Study on vision-based navigation system of intelligent-robot [J]. Computer Applications and Software, 2012, 27(12): 218-220,242.

[2] [2] Li Mingxuan, Zhang Man, Meng Qingkuan, et al.. Rapid detection of navigation baseline for farm machinery based on scan-filter algorithm [J]. Transactions of the Chinese Society of Agricultural Engineering, 2013, 29(1): 41-47.

[3] [3] Ji Ying, Liu Gang, Shen Wei. A method based on machine vision obtain a guidance directirx [J]. Acta Optica Sinica, 2009, 29(12): 3362-3367.

[4] [4] Yuan Zuoyun, Mao Zhihuai, Wei Qing. Orientation technique of crop rows based on computer vision [J]. J China Agricultural University, 2005, 10(3): 69-72.

[5] [5] Jiang Guoquan, Ke Xing, Du Shangfeng, et al.. Crop row detection based on machinevision [J]. Acta Optica Sinica, 2009, 29(4): 1015-1020.

[6] [6] Jiang Guoquan, Ke Xing, Du Shangfeng, et al.. Detection algorithm of crop rows based on machine vision and randomized method [J]. Transactions of the Chinese Society of Agricultural Machinery, 2008, 39(11): 85-88.

[7] [7] Gao Guoqin, Li Ming. Navigating path recognition for greenhouse mobile robot based on K-means algorithm [J]. Transactions of the Chinese Society of Agricultural Engineering, 2014, 30(7): 25-33.

[8] [8] Meng Qingkuan, He Jie, Qiu Ruicheng, et al.. Crop recognition and navigation line detection in natural environment based on machine vision [J]. Acta Optica Sinica, 2014, 34(7): 0715002.

[9] [9] Lin Weiming, Hu Yuntang. Image segmentation method based on YUV color space for tomato harvesting robot [J]. Transactions of the Chinese Society of Agricultural Machinery, 2012, 43(12): 176-180.

[10] [10] Si Yongsheng, Jiang Guoquan, Liu Gang, et al.. Early stage crop rows detection based on least square method [J]. Transactions of the Chinese Society of Agricultural Machinery, 2010, 41(7): 163-167.

[11] [11] Ding Weili, Li Yong, Wang Wenfeng, et al.. Depth estimation of urban road image based on contour understanding [J]. Acta Optica Sinica, 2014, 34(7): 0715001.

[12] [12] Ding Weili, Li Yong, Wang Wenfeng, et al.. Vanishing point detection algorithm for urban road image based on the envelope of perpendicular and parallel lines [J]. Acta Optica Sinica, 2014, 34(10): 1015002.

[13] [13] K M He, J Sun, X O Tang. Single image haze removal using dark channel prior [J]. IEEE Transactions on Pattern Analysis and Machine Intelligence, 2011, 33(12): 2341-2353.

[14] [14] Yuan Ting, Ren Yongxin, Li Wei, et al.. Navigation information acquisition based on illumination chromaticity stability analysis for greenhouse robot [J]. Transactions of the Chinese Society of Agricultural Machinery, 2012, 43(10): 161-166.