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Browsing by Subject "Image processing"

Now showing items 1-20 of 39

802.11n performance analysis for a real multimedia industrial application

Silvestre Blanes, Javier Lidiano; Berenguer Sebastiá, Joaquín Ramón; Sempere Paya, Víctor Miguel; Todoli Ferrandis, David (Elsevier, 2015-01)

In spite of their limitations, wireless networks are being increasingly used in industrial environments. The electromagnetic phenomena that can occur, along with the interference that may occur due to it being an open ...
A didactic tool for the study of Computed Tomography image reconstruction

El Hajj, Rida (2015-05-11)

The main goal of this project was to design a didactic software tool that could permit a user to study the mechanisms behind the image reconstruction in Computerized Axial Tomography (also known as Computed Tomography), ...
A quantitative analysis of nozzle surface bound fuel for diesel injectors

Turner, Jack; Sykes, Dan; De Sercey, Guillaume; Stetsyuk, Viacheslav; Gold, Martin; Pearson, Richard; Crua, Cyril (Editorial Universitat Politècnica de València, 2017-07-28)

[EN] In a fuel injector at the end of the injection, the needle descent and the rapid pressure drop in the nozzle leads to discharge of large, slow-moving liquid structures. This unwanted discharge is often referred as ...
A wireless Sensor Network that use Image Processing for Vineyard Monitoring

Lloret, Jaime; Bosch Roig, Ignacio; Sendra Compte, Sandra; Serrano Cartagena, Arturo (MDPI, 2011)

The first step to detect when a vineyard has any type of deficiency, pest or disease is to observe its stems, its grapes and/or its leaves. To place a sensor in each leaf of every vineyard is obviously not feasible in terms ...
Adaptive marginal median filter for colour images

Morillas, Samuel; Gregori Gregori, Valentín; Sapena Piera, Almanzor (MDPI, 2011)

[EN] This paper describes a new filter for impulse noise reduction in colour images which is aimed at improving the noise reduction capability of the classical vector median filter. The filter is inspired by the application ...
An improved image processing method for particle characterization by shadowgraphy

Wang, Hua; Felis, Francisco; Tomas, Severine; Anselmet, Fabien; Amielh, Muriel (Editorial Universitat Politècnica de València, 2017-07-28)

[EN] Shadowgraphy is one of the most popular imaging techniques to characterize moving particles by their size, geometry as well as velocity, due to its simplicity. However, it requires advanced image processing to ...
Analysis of the detachment of citrus fruits by vibration using artificial vision

Torregrosa Mira, Antonio; Albert Gil, Francisco Eugenio; Aleixos Borrás, María Nuria; Ortiz Sánchez, María Coral; Blasco Ivars, José (Elsevier, 2014-03)

The vibratory behaviour of citrus fruits is studied using slow-motion cameras in order to gain a better understanding of the parameters involved in fruit detachment when mechanical harvesting is done using shakers. Single ...
Aplicación de técnicas de visión multiespectral en cirugía

Moncho Santonja, María (2018-09-10)

[EN] On surgery, tools to help vision as X-rays, magnifying glasses, microscopes, stains or endoscopes among others are commonly used. On direct vision, with or without magnification, the application of different illuminants ...
Bubble behavior of fructooligosaccharides syrup during the belt drying process

Zhao, Lijuan; Wang, Dandan; Du, Tengfei; Yang, Junhong; Li, Jianguo; Wu, Zhonghua (Editorial Universitat Politècnica de València, 2018-09-07)

[EN] This paper is aiming to study experimentally the bubbling and drying characteristic of fructooligosaccharides syrup in the belt drying process. A series of bubble images were acquired by a high-speed image acquisition ...
Chroma Key wthout Color Restrictions based on Asynchronous Amplitude Modulation of Background Illumination on Retroreflective Screens

Vidal Rodriguez, Borja; Lafuente, Juan Alberto (Society of Photo-optical Instrumentation Engineers (SPIE), 2016-03)

A simple technique to avoid color limitations in image capture systems based on chroma key video composition using retroreflective screens and light-emitting diodes (LED) rings is proposed and demonstrated. The combination ...
Demyelinating and ischemic brain diseases: detection algorithm through regular magnetic resonance images

Castillo, D.; Samaniego, R.; Jiménez, Y.; Cuenca, L.; Vivanco, O.; Rodríguez-Álvarez, MJ (The International Society for Optical Engineering., 2017)

[EN] This work presents the advance to development of an algorithm for automatic detection of demyelinating lesions and cerebral ischemia through magnetic resonance images, which have contributed in paramount importance ...
Desarrollo de una aplicación para ordenadores para la detección y reconocimiento facial de alumnos para el posterior control de asistencia.

Álvarez López, Guillermo (2016-11-07)

El principal objetivo de este trabajo, es el desarrollo de una aplicación compilada, mediante la interfaz gráfica de Matlab (GUI), que sea capaz, previo aprendizaje de la aplicación, de localizar la cara en la fotografía, ...
Descriptores Geométricos y de Forma: Aplicación a la caracterización ultrasónica de materiales

Gómez García, Soledad (2010-11-02)

Entre otras aplicaciones, el Grupo de Tratamiento de Señal (GTS) de la Universidad Politécnica de Valencia ha trabajado tradicionalmente en el campo de los ensayos no destructivos por ultrasonidos. el GTS ha desarrollado ...
Detección de texto en escenas naturales

López González, Rafael (2017-12-12)

Along this thesis the actual state of the art algorithms of autonomous text localization and recognition in natural scene images are going to be analyzed, as well as methods for reaching a real-time execution on these ...
Determining image distortion and PBS (point of best symmetry) in digital images using straight line matrices

Herráez Boquera, José; Denia Ríos, José Luis; Navarro Esteve, Pablo José; Rodríguez Pereña, Jaime; Martín Sánchez, María Teresa (Elsevier, 2016)

[EN] It is impossible to take accurate measurements in photogrammetry without first removing the distortion in images. This paper presents a methodology for correcting radial and tangential distortion and for determining ...
Digital non-metric image-based documentation for the preservation and restoration of mural paintings: the case of the Üzümlü Rock-hewn Church, Turkey

Higuchi, Ryo; Suzuki, Tamaki; Shibata, Mina; Taniguchi, Yoko; Gülyaz, Murat (Universitat Politècnica de València, 2016-05-31)

[EN] Digital photography is a valuable documentation technique for the preservation of a cultural heritage site because highresolution photography presents both general and detailed views of mural paintings and mural ...
Diseño, Desarrollo e Implementación de una Plataforma Modular y Multifabricante para la Visualización de Imágenes Médicas Funcionales

Colomer Granero, Adrián (2013-10-07)

EL OBJETIVO FINAL DE ESTE TRABAJO, ES EL DE CREAR UNA PLATAFORMA DE ARQUITECTURA MODULAR, QUE PERMITA LA VISUALIZACIÓN DE IMÁGENES OBTENIDAS MEDIANTE RESONANCIA MAGNÉTICA Y ESTÉ PROVISTA DE LAS HERRAMIENTAS PRINCIPALES ...
Display Capture and Transmission

Catalá Adrama, Laura (2013-02-15)

My purpose in doing this project is to improve the learning experience by sharing what should be placed on the projector through a wireless connection. Through this project, the image of the lecturer¿s computer can be ...
Drying intensification by vibration: fundamental study of liquid water inside a pore

Chen, Wangshu; Colin, Julien; Casalinho, Joel; Ben Amara, Mohamed; Stambouli, Moncef; Perré, Patrick (Editorial Universitat Politècnica de València, 2010-09-07)

[EN] Vibration is a promising way to intensify the drying process through heating-up due to viscous dissipation, activation of internal liquid transfer and increase of external transfer. To better assess the possible ...
Effect of multiple injection strategies on the Diesel spray formation and combustion using optical diagnostics

Viera Sotillo, Alberto Antonio (2019-07-22)

[ES] En los últimos años, la evolución de las tecnologías de inyección ha permitido no solo mejorar el proceso de mezcla, sino también controlar con precisión los parámetros de inyección, agregando flexibilidad a los ...