Fig. 1From: Method for accurate multi-growth-stage estimation of fractional vegetation cover using unmanned aerial vehicle remote sensingStudy area and experimental field: a Jining City in Shandong province, China. b Location of Jiaxiang County in Jining City, Shandong province. c Mapping area and ROIs in experimental field (UAV-RGB image acquired September 17, 2015). Note: ROI is the region of interest, UAV stand for “unmanned aerial vehicle.”Back to article page