Improved estimation of aboveground biomass in wheat from RGB imagery and point cloud data acquired with a low-cost unmanned aerial vehicle system

Table 5 Processing steps with corresponding parameter settings in Agisoft Photoscan software for generation of orthophotos and DEMs from UAV imagery

Task	Parameter setup
Aligning image	Accuracy: high
	Pair selection: generic
	Key points: 40,000
	Tie points: 4000
Building mesh	Surface type: height field
	Source data: dense cloud
	Face count: high
Positioning guided marker	Manual positioning of markers on the even 7 GCPs for all the photos
Optimizing cameras	Default settings
Building dense point cloud	Quality: high
Building dense point cloud	Depth filtering: mild
Building texture	Mapping mode: Generic
	Blending mode: Mosaic
	Texture size/count: 4096
Building DEM	Surface: Mesh
Building DEM	Other parameters: default
Building orthomosaic	Surface: Mesh
Building orthomosaic	Other parameters: default

ISSN: 1746-4811