English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/7665
Compartir / Impacto:
Estadísticas
Add this article to your Mendeley library MendeleyBASE
Ver citas en Google académico
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar otros formatos: Exportar EndNote (RIS)Exportar EndNote (RIS)Exportar EndNote (RIS)
Título : New contributions to the multidimensional analysis of signals and images through the pseudo-Wigner Distribution
Otros títulos: Nuevas contribuciones en el análisis multidimensional de señales e imágenes mediante la pseudo-distribución de Wigner
Autor : Gabarda Tébar, Salvador
Director: Cristóbal Pérez, Gabriel
Palabras clave : Wigner Distribution
Image analysis
Fecha de publicación : 13-may-2008
Resumen: The subject of this thesis is to develop new applications in signal processing based on the multidimensional analysis that can be achieved by means of the Wigner distribution (WD). The kind of signals that have been mainly handled are the signals used in computer vision, as images, or image sequences, without excluding other kind of signals as time series. Typically, the WD requires a great amount of calculations. To simplify these calculations, a new set of algorithms for 1-D and 2-D signals is introduced in this thesis. The performance of this methodology relays in the use of a directional 1-D discrete version of the WD, along with a small data window, instead of a full 2-D implementation. This technique, added to the continuously increasing speed of the new processors, approximates the use of the WD to a real-time tool for digital image processing. Comparative measurements are also presented that show how the results obtainable through this analysis, based on a determined and discrete version of the WD, are similar and sometimes better than other classical methods. Additionally, the multi-directional analysis introduced in this thesis makes possible the evaluation of the anisotropic nature of the images. This anisotropic evaluation has been used to develop an application for isotrigon textures discrimination and to derive an objective anisotropic measure for image quality assessment. Finally, the methods for image processing developed in this thesis have been extended successfully to other frames as biomedical signals.
Descripción : Tesis doctoral de la Facultad de Ciencias (Departamento de Física Matemática y de Fluidos) de la Universidad Nacional de Educación a Distancia (UNED) y del Instituto de Óptica "Daza de Valdés" del Consejo Superior de Investigaciones Científicas (IO-CSIC).-- 166 págs.
URI : http://hdl.handle.net/10261/7665
Aparece en las colecciones: (CFMAC-IO) Tesis
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
Tesis_S_Gabarda.pdf14,08 MBAdobe PDFVista previa
Visualizar/Abrir
Mostrar el registro completo
 


NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.