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Browsing by Author "Valiente González, José Miguel"

Now showing items 1-16 of 16

A new method to analyse mosaics based on Symmetry Group theory applied to Islamic Geometric Patterns

Albert Gil, Francisco Eugenio; Gomis Martí, José María; Blasco, J.; Valiente González, José Miguel; Aleixos Borrás, María Nuria (Elsevier, 2015-01)

[EN] This article presents a new method for analysing mosaics based on the mathematical principles of Symmetry Groups. This method has been developed to get the understanding present in patterns by extracting the objects ...
A study of digital persistence

Terevinto Charquero, Pablo Nicolás (Universitat Politècnica de València, 2014-11-04)

[EN] This project aims to create the resources necessaries to undertake a study about the average time of persistency of deleted files which have been erased by a average Windows user. This report describes the methodology ...
Análisis y clasificación de imágenes repetitivas mediante técnicas de simetría computacional

Agustí Melchor, Manuel (Universitat Politècnica de València, 2016-05-02)

[EN] Currently we handle a lot of visual information. We see, create and use many images in our diary lives and work. Analysis techniques based on low level features are, in many cases, little descriptive or representative ...
Automatic Bluefin Tuna (Thunnus thynnus) biomass estimation during transfers using acoustic and computer vision techniques

Puig Pons, Vicente; Muñoz-Benavent, Pau; Espinosa Roselló, Víctor; Andreu García, Gabriela; Valiente González, José Miguel; Estruch, V. D.; Ordoñez-Cebrian, Patricia; Pérez Arjona, Isabel; Atienza-Vanacloig, Vicente; Mèlich, Begonya; De la Gandara García, Fernando; Santaella, E. (Elsevier, 2019)

[EN] In this work, acoustic and computer vision techniques are combined to develop an automatic procedure for biomass estimation of tuna during transfers. A side scan sonar working at 200¿kHz and a stereo camera, positioned ...
Automatic Bluefin Tuna sizing using a stereoscopic vision system

Muñoz-Benavent, Pau; Andreu García, Gabriela; Valiente González, José Miguel; Atienza-Vanacloig, Vicente; Puig Pons, Vicente; Espinosa Roselló, Víctor (Oxford University Press, 2018)

[EN] This article presents a non-invasive fully automatic procedure for Bluefin Tuna sizing, based on a stereoscopic vision system and a deformable model of the fish ventral silhouette. An image processing procedure is ...
Automatic corn (Zea mays) kernel inspection system using novelty detection based on principal component analysis

Valiente González, José Miguel; Andreu García, Gabriela; Potter, Paulus; Rodas Jordá, Ángel (Elsevier, 2014-01)

[EN] Corn (Zea mays) kernel processing companies evaluate the quality of kernels to determine the price of a batch. Human inspectors in labs inspect a reduced set of kernels to estimate the proportion of damaged kernels ...
Automatic detection of skin defects in citrus fruits using a multivariate image analysis approach

López García, Fernando; Andreu García, Gabriela; Blasco Ivars, José; Aleixos Borrás, María Nuria; Valiente González, José Miguel (Elsevier, 2010-05)

One of the main problems in the post-harvest processing of citrus is the detection of visual defects in order to classify the fruit depending on their appearance. Species and cultivars of citrus present a high rate of ...
Automatic visual inspection of corn kernels using principal component analysis

Potter, Paulus (Universitat Politècnica de València, 2012-03-20)

During the processing of corn, corn kernels are inspected for the purpose of determining the quality and stock value. There are many kinds of defects which can reduce the stock value whereas the difference between defects ...
Detection of visual defects in citrus fruits: multivariate image analysis vs graph image segmentation

López García, Fernando; Andreu García, Gabriela; Valiente González, José Miguel; Atienza Vanacloig, Vicente Luis (Springer Verlag (Germany), 2013)

This paper presents an application of visual quality control in orange post-harvesting comparing two different approaches. These approaches correspond to two very different methodologies released in the area of Computer ...
Enhanced fish bending model for automatic tuna sizing using computer vision

Muñoz-Benavent, Pau; Andreu García, Gabriela; Valiente González, José Miguel; Atienza-Vanacloig, Vicente; Puig Pons, Vicente; Espinosa Roselló, Víctor (Elsevier, 2018)

[EN] This paper presents a non-invasive fully automatic procedure to obtain highly accurate fish length estimation in adult Bluefin Tuna, based on a stereoscopic vision system and a deformable model of the fish ventral ...
Estimation of Bluefin Tuna (Thunnus thynnus) mean length in sea cages by acoustical means

Puig Pons, Vicente; Muñoz-Benavent, Pau; Pérez Arjona, Isabel; Ladino-Velásquez, Anderson; Llorens-Escrich, Susana; Andreu García, Gabriela; Valiente González, José Miguel; Atienza-Vanacloig, Vicente; Ordoñez-Cebrian, Patricia; Pastor Gimeno, José Ismael; Espinosa Roselló, Víctor (Elsevier, 2022-08)

[EN] This paper proposes an indirect method to estimate Bluefin Tuna (Thunnus thynnus) biomass in cages using acoustic techniques. Two Simrad EK60 echosounders working at 120 and 200 kHz and a stereo camera were used to ...
Real-time surface grading of ceramic tiles

López García, Fernando (Universitat Politècnica de València, 2008-05-06)

This thesis presents a case of study of the development and performance analysis of a surface grading application with real-time compliance. We address the issue of spatial and temporal uniformity in the acquisition ...
Reconocimiento de gestos mediante redes neuronales convolucionales, utilizando imágenes de rango capturadas con el dispositivo Leap Motion

Rodas Lorente, Marc (Universitat Politècnica de València, 2021-10-14)

[ES] En el presente trabajo final de grado se desarrolla un reconocedor de gestos estáticos realizados con la mano, basado en redes neuronales convolucionales y empleando Leap Motion como dispositivo de toma de imágenes, ...
Sistema de identificación mediante reconocimiento facial

Sabater Delgado, José (Universitat Politècnica de València, 2019-01-23)

Se trata del desarrollo de una aplicación para la identificación de personas mediante reconocimienjto facial. Se desarrollará en Matlab e incorparará todas las etapas típicas de una aplicación de visión: adquisición de ...
Vision-based discrimination of tuna individuals in grow-out cages through a fish bending model

Atienza-Vanacloig, Vicente; Andreu García, Gabriela; López García, Fernando; Valiente González, José Miguel; Puig Pons, Vicente (Elsevier, 2016-11-15)

This paper proposes a robust deformable adaptive 2D model, based on computer vision methods, that automatically fits the body (ventral silhouette) of Bluefin tuna while swimming. Our model (without human intervention) ...
Volatile profile of Spanish raw citrus honey: The best strategy for its correct labeling

Escriche Roberto, Mª Isabel; Juan-Borras, María del Sol; Visquert Fas, Mario; Asensio-Grau, Andrea; Valiente González, José Miguel (Blackwell Publishing, 2022-06)

[EN] The objective of this study was to evaluate the presence of specific volatile compounds (analyzed by SPME-GC- MS) in citrus honey, comparing thyme, and sunflower, and to correlate their abundance with the level of ...