RT Journal Article T1 vitisFlower®: Development and Testing of a Novel Android-Smartphone Application for Assessing the Number of Grapevine Flowers per Inflorescence Using Artificial Vision Techniques A1 Aquino Martín, Arturo A1 Millán Prior, Borja A1 Gastón Ochoa, Daniel A1 Diago, María-Paz A1 Tardáguila, Javier AB Grapevine flowering and fruit set greatly determine crop yield. This paper presents a new smartphone application for automatically counting, non-invasively and directly in the vineyard, the flower number in grapevine inflorescence photos by implementing artificial vision techniques. The application, called vitisFlower®, firstly guides the user to appropriately take an inflorescence photo using the smartphone’s camera. Then, by means of image analysis, the flowers in the image are detected and counted. vitisFlower® has been developed for Android devices and uses the OpenCV libraries to maximize computational efficiency. The application was tested on 140 inflorescence images of 11 grapevine varieties taken with two different devices. On average, more than 84% of flowers in the captures were found, with a precision exceeding 94%. Additionally, the application’s efficiency on four different devices covering a wide range of the market’s spectrum was also studied. The results of this benchmarking study showed significant differences among devices, although indicating that the application is efficiently usable even with low-range devices. vitisFlower is one of the first applications for viticulture that is currently freely available on Google Play. PB MDPI SN 1424-8220 (electrónico) YR 2015 FD 2015-08 LK https://hdl.handle.net/10272/23041 UL https://hdl.handle.net/10272/23041 LA eng NO Aquino, A., Millan, B., Gaston, D., Diago, M.-P., & Tardaguila, J. (2015). vitisFlower®: Development and Testing of a Novel Android-Smartphone Application for Assessing the Number of Grapevine Flowers per Inflorescence Using Artificial Vision Techniques. In Sensors (Vol. 15, Issue 9, pp. 21204–21218). MDPI AG. https://doi.org/10.3390/s150921204 NO The authors would like to thank the Agencia de Desarrollo Económico de La Rioja (ADER) agency of the La Rioja regional government and the Spanish Ministry of Economy and Competitiveness for funding the projects VINETICS and AGL2011-23673, respectively. The authors also thank Marjolaine Chatin and Actylab for their help and support. DS Repositorio Institucional de la Universidad de Huelva RD 31 may 2026