Forest Analysis with Airborne Laser Scanning (LiDAR) Data
Load las_chablais3
Calibrates and validates area-based models
Combines a list of ABA models into a single ABA model object
computes inference from area-based model and predicted values
Function for area-based metrics computation
Plots observed VS values predicted in leave one out cross validation o...
Mapping of ABA prediction models
Add vegetation indices on a IRC image
Inverse Box-Cox transformation with bias correction
Inverse Box-Cox transformation
Box-Cox Transformation
Cimg to SpatRaster conversion
Raster corresponding to circle extent
Applies thresholds and mask to a raster object
Computes metrics on list of point clouds
Computes metrics on trees detected in list of point clouds.
Raster format conversion
Tree inventory and canopy height model coregistration
Disk-shaped matrix mask
Image pre-processing (non-linear filtering and Gaussian smoothing)
Edge detection in gap image
Create elliptical polygons from centres and extensions in four directi...
Gap detection in a Canopy Height Model
Regression of detected heights VS reference heights
Histogram of detection
Stacked histogram
las data in France (Chablais 3 plot)
Checks linear model assumptions of a multiple regression model
Local maxima extraction on image
Image maxima selection based on values and neighborhood of local maxim...
Plot of matched pairs of detected and reference trees
Displays a map of tree inventory data
Convert a list of points into spatial polygons object
Digital Surface Model
Digital Terrain Model
Polar to cartesian coordinates conversion
Raster mask of convex hull
Statistics of raster local maximum
Computes metrics by aggregating a raster at lower resolution or summar...
Raster mask by union of buffers around xy positions
Image statistic in segment
SpatRaster to Cimg conversion
Correlation between rasters for different XY translations
Correlation between two rasters
Modification of segments based on values
Image segmentation by seed-based watershed algorithm
Table of species names, abreviations and display colors
Computation of tree metrics
Computation of terrain metrics
Tree detection
Tree extraction
3D matching of detected tree top positions with reference positions
Preprocessing and segmentation of raster image for tree identification
Provides functions for forest objects detection, structure metrics computation, model calibration and mapping with airborne laser scanning: co-registration of field plots (Monnet and Mermin (2014) <doi:10.3390/f5092307>); tree detection (method 1 in Eysn et al. (2015) <doi:10.3390/f6051721>) and segmentation; forest parameters estimation with the area-based approach: model calibration with ground reference, and maps export (Aussenac et al. (2023) <doi:10.12688/openreseurope.15373.2>); extraction of both physical (gaps, edges, trees) and statistical features useful for e.g. habitat suitability modeling (Glad et al. (2020) <doi:10.1002/rse2.117>) and forest maturity mapping (Fuhr et al. (2022) <doi:10.1002/rse2.274>).
Useful links