Skip to main content

Research Repository

Advanced Search

HLB Disease Detection in Omani Lime Trees Using Hyperspectral Imaging Based Techniques

Menezes, Jacintha; Dharmalingam, Ramalingam; Shivakumara, Palaiahnakote


Jacintha Menezes

Ramalingam Dharmalingam


In the recent years omani acid lime cultivation and production has been affected by Citrus greening or Huanglongbing (HLB) disease. HLB disease is one of the most destructive diseases for citrus with no remedies or countermeasures to stop the disease. Currently used Polymerase chain reaction (PCR) and Enzyme-linked immunosorbent assay (ELISA) HLB detection tests require lengthy and labor-intensive laboratory procedures. Furthermore, the equipment and staff needed to carry out the laboratory procedures are specialized hence making them a less optimal solution for the detection of the disease. The current research uses hyperspectral imaging technology for automatic detection of citrus trees with HLB disease. Omani citrus tree leaf images were captured through portable Specim IQ hyperspectral camera. The research considered healthy, nutrition deficient and HLB infected leaf samples based on the Polymerase chain reaction (PCR) test. The high-resolution image samples were sliced to into sub cubes. The sub cubes were further processed to obtain RGB images with spatial features. Similarly, RGB spectral slices were obtained through a moving window on the wavelength. The resized spectral-spatial RGB images were given to Convolution Neural Network for deep feature extraction. The current research was able to classify a given sample to the appropriate class with 92.86% accuracy indicating the effectiveness of the proposed techniques. The significant bands with a difference in three types of leaves are found to be 560 nm, 678 nm, 726 nm and 750 nm. This research offers a promising and effective approach utilizing cutting-edge technology to address the critical challenge of HLB disease in Omani citrus trees, providing a potential pathway for more efficient disease identification and management in the citrus industry.


Menezes, J., Dharmalingam, R., & Shivakumara, P. (2024). HLB Disease Detection in Omani Lime Trees Using Hyperspectral Imaging Based Techniques.

Journal Article Type Conference Paper
Acceptance Date Oct 10, 2023
Publication Date Jan 30, 2024
Deposit Date Feb 2, 2024
Publicly Available Date Jan 31, 2026
Journal Recent Trends in Image Processing and Pattern Recognition
Peer Reviewed Peer Reviewed
Related Public URLs