“…Low-cost pocket cameras are designed and manufactured mainly for taking snapshots easily, and manufacturers do not usually recommend them for measurement or survey use that requires a high degree of accuracy and stability. Recently, the feasibility of using single-lens refl ex digital cameras for mapping was reported (Kunii and Murai, 2008). In fact, several authors have shown favorable results using color video or still digital cameras, or multiband cameras equipped with a near infrared band-pass fi lter for assessing crop coverage or leaf greenness (e.g., Kawashima and Nakatani, 1998;Adamsen et al, 1999;Purcell, 2000;Zhou and Robson, 2001;Matsuda et al, 2003;Jia et al, 2004;Ku et al, 2004;Casadesus et al, 2007;Omine, 2007;Takemine et al, 2007;Crimmins and Crimmins, 2008;Okada and Ikeba, 2008;Takada et al, 2009;Sakamoto et al, 2010).…”