Abstract
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.
Supported by The Research Council (TRC), Sultanate of Oman.
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Acknowledgements
The research leading to these results has received funding from the Research Council (TRC) of the Sultanate of Oman under the Block Funding Program. TRC Block Funding Agreement No BFP/RGP/EBR/21/332. The authors would like to thank Mr. Mohammed, Lab technician, Ministry of Agriculture, Fisheries Wealth, and Water Resources, Liwa, Sohar in conducting the Polymerase chain reaction (PCR) test.
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Menezes, J., Dharmalingam, R., Shivakumara, P. (2024). HLB Disease Detection in Omani Lime Trees Using Hyperspectral Imaging Based Techniques. In: Santosh, K., et al. Recent Trends in Image Processing and Pattern Recognition. RTIP2R 2023. Communications in Computer and Information Science, vol 2027. Springer, Cham. https://doi.org/10.1007/978-3-031-53085-2_7
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