Zhou, Mingkuan, et al. “Design and Experiment of Visual Navigated UGV for Orchard Based on Hough Matrix and RANSAC”. International Journal of Agricultural and Biological Engineering, vol. 14, no. 6, Dec. 2021, pp. 176-84, https://ijabe.migration.pkpps03.publicknowledgeproject.org/index.php/ijabe/article/view/5953.