Mapping whitegrub damage in sugarcane from high spatial resolution satellite imagery

Johansen, Kasper, Robson, Andrew, Samson, Peter, Sallam, Nadar, Chandler, Keith, Derby, Lisa and Jennings, Jillian (2014). Mapping whitegrub damage in sugarcane from high spatial resolution satellite imagery. In: Ioannis Gitas, Giorgios Mallinis, Petros Patias, Dimitris Stathakis and Georgios Zalidis, GEOBIA 2014, Αdvancements, trends and challenges, 5th Geographic Object-Based Image Analysis Conference, Greece. GEOBIA 2014, Thessaloniki, Greece, (549-553). 21-24 May 2014.

Attached Files (Some files may be inaccessible until you login with your UQ eSpace credentials)
Name Description MIMEType Size Downloads
UQ355143_OA.pdf Full text (open access) application/pdf 170.39KB 34
Author Johansen, Kasper
Robson, Andrew
Samson, Peter
Sallam, Nadar
Chandler, Keith
Derby, Lisa
Jennings, Jillian
Title of paper Mapping whitegrub damage in sugarcane from high spatial resolution satellite imagery
Conference name GEOBIA 2014
Conference location Thessaloniki, Greece
Conference dates 21-24 May 2014
Proceedings title GEOBIA 2014, Αdvancements, trends and challenges, 5th Geographic Object-Based Image Analysis Conference, Greece
Journal name South-Eastern European Journal of Earth Observation and Geomatics
Place of Publication Thessaloniki, Greece
Publisher Aristotle University of Thessaloniki
Publication Year 2014
Sub-type Fully published paper
Open Access Status File (Author Post-print)
ISSN 2241-1224
Editor Ioannis Gitas
Giorgios Mallinis
Petros Patias
Dimitris Stathakis
Georgios Zalidis
Volume 3
Issue 2s
Start page 549
End page 553
Total pages 5
Collection year 2015
Language eng
Abstract/Summary ‘Canegrubs’ (whitegrubs; Coleoptera: Scarabaeidae) feed on the roots of sugarcane plants, reducing plant vigour and yield, and if left untreated they have the potential to rapidly increase the impacted area in the following year. For the targeted control of the canegrub, it is essential that the location of the affected areas is identified. However, identifying canegrub damage in the field is difficult due to the often impenetrable nature of sugarcane. The objective of this research was to use geographic object‐based image analysis (GEOBIA) and high spatial resolution satellite imagery to map canegrub damage. The GEOBIA mapping approach used in this research was based on the following key steps for three selected study sites in Queensland, Australia: (1) initial segmentation of sugarcane block boundaries and further segmentation of each block into smaller homogenous objects; (2) classification and subsequent omission of fallow/harvested fields, tracks and other non‐sugarcane features; (3) identification of ‘potentially’ grub‐damaged areas within each block based on low NDVI and high image texture values; and (4) identification of ‘likely’ grub affected areas based on the absolute difference in NDVI and texture values between the ‘potentially’ grub damaged areas and the remaining parts of each block. Overall accuracies were between 53‐79%. Further research will focus on improving these mapping accuracies. The results of this research will help cane growers to manage and reduce damage caused by canegrubs and increase future yields.
Keyword GEOBIA
GeoEye‐1
Sugarcane grub damage
Queensland Australia
eCognition
Q-Index Code EX
Q-Index Status Confirmed Code
Institutional Status UQ

 
Versions
Version Filter Type
Citation counts: Google Scholar Search Google Scholar
Created: Mon, 30 Mar 2015, 13:05:50 EST by Genna Apted on behalf of School of Geography, Planning & Env Management