PreprintCommunicationVersion 1Preserved in Portico This version is not peer-reviewed
A Simple Drone Survey and Image Processing Approach to Identifying St. John's Wort (Hypericum Perforatum) on Grazing Land in the Hunter Valley NSW, Australia
Version 1
: Received: 7 January 2023 / Approved: 9 January 2023 / Online: 9 January 2023 (06:48:13 CET)
How to cite:
Lucas, S.A. A Simple Drone Survey and Image Processing Approach to Identifying St. John's Wort (Hypericum Perforatum) on Grazing Land in the Hunter Valley NSW, Australia. Preprints2023, 2023010144. https://doi.org/10.20944/preprints202301.0144.v1
Lucas, S.A. A Simple Drone Survey and Image Processing Approach to Identifying St. John's Wort (Hypericum Perforatum) on Grazing Land in the Hunter Valley NSW, Australia. Preprints 2023, 2023010144. https://doi.org/10.20944/preprints202301.0144.v1
Lucas, S.A. A Simple Drone Survey and Image Processing Approach to Identifying St. John's Wort (Hypericum Perforatum) on Grazing Land in the Hunter Valley NSW, Australia. Preprints2023, 2023010144. https://doi.org/10.20944/preprints202301.0144.v1
APA Style
Lucas, S.A. (2023). A Simple Drone Survey and Image Processing Approach to Identifying St. John's Wort (<em>Hypericum Perforatum</em>) on Grazing Land in the Hunter Valley NSW, Australia. Preprints. https://doi.org/10.20944/preprints202301.0144.v1
Chicago/Turabian Style
Lucas, S.A. 2023 "A Simple Drone Survey and Image Processing Approach to Identifying St. John's Wort (<em>Hypericum Perforatum</em>) on Grazing Land in the Hunter Valley NSW, Australia" Preprints. https://doi.org/10.20944/preprints202301.0144.v1
Abstract
This paper presents a simple drone survey and image processing approach to identifying St. John's wort (Hypericum perforatum) on grazing land in the Hunter Valley NSW, Australia. St John’s wort is an invasive species (weed) that competes with pasture, poisons livestock, can downgrade wool with ‘vegetable fault’, and decreases property values. Identifying the locations of St John wort from the ground can be difficult due to topography, limited access, and/or larger land areas of mixed vegetation. In this study, a drone was used to survey a 174-ha grazing property in the Hunter Valley NSW (Australia). The images were stitched together using commercially available software. A unique Visual Atmospheric Resistance Index (VARI) attribute was identified and used to highlight the presence of St John’s wort in the survey area. These sub-areas were then digitised onto high resolution maps for future planning use by land managers.
Keywords
drone surveys; weed management; weed mapping; VARI; St John’s wort
Subject
Environmental and Earth Sciences, Environmental Science
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
