Mission planning for vertical surfaces Ground Control Software I will give a short demonstration of four common (DJI-based) ground control software: DJI GO 4, GS Pro, Map Pilot, and Pix4Dcapture. For the most part, flight planning with these software is completed on site, in the field. Agisoft Photoscan I have been […]
FANR5640/7640
36 posts
There are quite a few ground control software options available for both IOS and Android. Most DJI pilots will use the DJI Go app when first learning how to operate their aircraft manually. Its functionality is limited, however, for those wanting to perform autonomous missions. For these types […]
Lab 10: Coarse woody debris volume remaining after harvest [Excerpt from Brian Davis’ 2017 thesis,”REFINEMENT OF A DRONE-BASED METHOD FOR ESTIMATING COARSE WOODY DEBRIS AND BIOMASS RESIDUE FOLLOWING FOREST HARVEST”] "… Pine forests of the southern US are a major source of woody debris residues used for bioenergy (Milbrandt 2005). […]
Improvement of clip by extent example from Wednesday… The following code clips the LAS to the boundary of the shapefile. (example data) library(lidR) library(rgdal) setwd("c:/temp/sf/") tdat<- readLAS("sp2_pcloud.las") plot(tdat) tpoly<- readOGR( ".","AnalysisUnit") clpdat <- lasclipPolygon(tdat, tpoly@polygons[[1]]@Polygons[[1]]@coords[,1], tpoly@polygons[[1]]@Polygons[[1]]@coords[,2]) plot(clpdat) COARSE WOODY DEBRIS EXAMPLE: Task at hand is to determine […]
Today’s scenario. We need to perform a similar analysis on a site I flew last summer. We are only interested in the area outlined in red (screenshot below). INPUT DATA: Input LAS: sp2_pcloud.las (DropBox Link) Processing extent: AnalysisUnit.shp R WORKFLOW: Clip input data to processing extent Classify ground points Create […]
Recall the tree orchard site we’ve been looking at. This site is relatively flat with distinct (potted) objects. In this lab, I will attempt to lead you through an R-based analysis with the goal of segmenting the landscape (individual potted plants). INPUT DATA: Lab data is linked HERE. Use the […]
In this lab, you will generate a point cloud and an orthophoto from photos captured during one of my UAV flights last November. You will use the LiDAR toolset in Global Mapper to generate a bare ground “terrain” model and a “surface” model (includes trees, stumps, buildings, etc). ——————————————————————————— Create […]
We’ll get back to project planning Friday. In the meantime, lets review Monday’s lab and spatial data modeling in general. The most exciting phrase to hear in science, the one that heralds new discoveries, is not "Eureka!", but "That's funny..." (Isaac Asimov) In my case, the phrase is “…hmmm. That’s […]
Download the Lab 7 Data Here. In this lab, you will step through a series of raster calculations to create a canopy model. Processing this type of data is much vaster when working with the raster data type; resist the urge to convert to vector until the very […]