S. Baofeng, X. Jinru, X. Chunyu, F. yulin, S. Yuyang, and S. Fuentes, “Digital surface model applied to unmanned aerial vehicle based photogrammetry to assess potential biotic or abiotic effects on grapevine canopies”, Int J Agric & Biol Eng, vol. 9, no. 6, pp. 119–130, Dec. 2016.