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During their lifespan, olives undergo changes in their external color and chemical properties. To tackle these properties, we used hyperspectral imaging during the growing season of the olives. The objective of this study was to develop a lightweight model capable of identifying olives in the hyperspectral images using their spectral information. To achieve this goal, we utilized the hyperspectral imaging of olives while they were still on the tree and conducted this process throughout the entire growing season directly in the field without artificial light sources. The images were taken on-site every week from 9:00 to 11:00 a.m. UTC to avoid light saturation and glitters. The data were analyzed using training and testing classifiers, including Decision Tree, Logistic Regression, Random Forest, and Support Vector Machine on labeled datasets. The Logistic Regression model showed the best balance between classification success rate, size, and inference time, achieving a 98% F1-score with less than 1 KB in parameters. A reduction in size was achieved by analyzing the wavelengths that were critical in the decision making, reducing the dimensionality of the hypercube. So, with this novel model, olives in a hyperspectral image can be identified during the season, providing data to enhance a farmer\u2019s decision-making process through further automatic applications.<\/jats:p>","DOI":"10.3390\/s24051370","type":"journal-article","created":{"date-parts":[[2024,2,20]],"date-time":"2024-02-20T11:50:07Z","timestamp":1708429807000},"page":"1370","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":10,"title":["Identification of Olives Using In-Field Hyperspectral Imaging with Lightweight Models"],"prefix":"10.3390","volume":"24","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-6697-070X","authenticated-orcid":false,"given":"Samuel","family":"Dom\u00ednguez-Cid","sequence":"first","affiliation":[{"name":"Department of Electronic Technology, Escuela Politecnica Superior, Universidad de Sevilla, 41011 Seville, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4309-6028","authenticated-orcid":false,"given":"Diego Francisco","family":"Larios","sequence":"additional","affiliation":[{"name":"Department of Electronic Technology, Escuela Politecnica Superior, Universidad de Sevilla, 41011 Seville, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9132-6158","authenticated-orcid":false,"given":"Julio","family":"Barbancho","sequence":"additional","affiliation":[{"name":"Department of Electronic Technology, Escuela Politecnica Superior, Universidad de Sevilla, 41011 Seville, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Francisco Javier","family":"Molina","sequence":"additional","affiliation":[{"name":"Department of Electronic Technology, Escuela Politecnica Superior, Universidad de Sevilla, 41011 Seville, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7845-4446","authenticated-orcid":false,"given":"Javier Antonio","family":"Guerra","sequence":"additional","affiliation":[{"name":"Department of Electronic Technology, Escuela Politecnica Superior, Universidad de Sevilla, 41011 Seville, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0043-8104","authenticated-orcid":false,"given":"Carlos","family":"Le\u00f3n","sequence":"additional","affiliation":[{"name":"Department of Electronic Technology, Escuela Politecnica Superior, Universidad de Sevilla, 41011 Seville, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2024,2,20]]},"reference":[{"key":"ref_1","unstructured":"International Olive Council (2024, January 22). 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