Detection of Firmiana danxiaensis Canopies by a Customized Imaging System Mounted on an UAV Platform

Figure 6

Example of data products computed from the spectra collected by the image system on UAVs. (a) Mosaicked orthoimage, (b) the smoothed DSM, and (c) NDVI index. One of the vegetation indices is used to distinguish vegetation area and soil area and to input to the SVM classifier at level 2 in the classification schema.

(a)

(b)

(c)