Jianlun, W.; Yu, H.; Shuangshuang, Z.; Hongxu, Z.; Can, H.; Xiaoying, C.; Yun, X.; Jianshu, C.; Shuting, W. A New Multi-Scale Analytic Algorithm for Edge Extraction of Strawberry Leaf Images in Natural Light. Int J Agric & Biol Eng 2016, 9, 99-108.