Identification of Lasiodiplodia Theobromae in avocado trees through image processing and machine learning

Heber I. Mejiá-Cabrera; J. Nicolás Flores; Jack Sigueñas; Victor Tuesta-Monteza; Manuel G. Forero

doi:10.1117/12.2567322

21 August 2020 Identification of Lasiodiplodia Theobromae in avocado trees through image processing and machine learning

Heber I. Mejiá-Cabrera, J. Nicolás Flores, Jack Sigueñas, Victor Tuesta-Monteza, Manuel G. Forero

Author Affiliations +

Proceedings Volume 11510, Applications of Digital Image Processing XLIII; 115102F (2020) https://doi.org/10.1117/12.2567322
Event: SPIE Optical Engineering + Applications, 2020, Online Only

Conference Poster

Abstract

The avocado is a fruit that grows in tropical and subtropical areas, very popular in the markets due to its great nutritional qualities and medicinal properties. The avocado is a plant of great commercial interest for Peru and Colombia, countries that export this fruit. This tree is affected by a wide variety of diseases reducing its production, even causing the death of the plant. The most frequent disease of the avocado tree in the production zone of Peru is caused by the fungus Lasiodiplodia Theobromae, which is characterized in its initial stage by producing a chancre around the stems and branches of the tree. Detection is commonly made by manual inspection of the plants by an expert, which makes it difficult to detect the fungus in extensive plantations. Therefore, in this work we present a semi-automatic method for the detection of this disease based on image processing and machine learning techniques. For this purpose, an acquisition protocol was defined. The identification of the disease was performed by taking as input pre-processed images of the tree branches. A learning technique was evaluated, based on a shallow CNN, obtaining 93% accuracy.

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Citation Download Citation

Heber I. Mejiá-Cabrera, J. Nicolás Flores, Jack Sigueñas, Victor Tuesta-Monteza, and Manuel G. Forero "Identification of Lasiodiplodia Theobromae in avocado trees through image processing and machine learning", Proc. SPIE 11510, Applications of Digital Image Processing XLIII, 115102F (21 August 2020); https://doi.org/10.1117/12.2567322

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