{"id":61700,"date":"2018-03-09T22:49:33","date_gmt":"2018-03-09T22:49:33","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/computer-vivision-algorithms-applied-to-a-conoscopic-holography-system\/"},"modified":"2018-03-09T22:49:33","modified_gmt":"2018-03-09T22:49:33","slug":"computer-vivision-algorithms-applied-to-a-conoscopic-holography-system","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/inteligencia-artificial\/computer-vivision-algorithms-applied-to-a-conoscopic-holography-system\/","title":{"rendered":"Computer vivision algorithms applied to a conoscopic holography system"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Julius Butime <\/strong><\/h2>\n<p>Computer vision algorithms applied to a conoscopic holography system #resumen: los m\u00e9todos sin contacto de medidas de superficies se emplean en una gran variedad de aplicaciones, tanto industriales como no industriales. Los m\u00e9todos de inspecci\u00f3n y control de calidad cl\u00e1sicos empleados hoy en d\u00eda en la industria, no siempre son adecuados debido a la influencia en los ensayos de diversos factores como el entorno de trabajo, el objeto a inspeccionar y los defectos detectados. La holograf\u00eda conosc\u00f3pica es un nuevo m\u00e9todo sin contacto de medici\u00f3n de superficies de alta precisi\u00f3n, del que se espera que ofrezca una gran resoluci\u00f3n incluso en entornos adversos. La holograf\u00eda conosc\u00f3pica est\u00e1 basada en la interferometr\u00eda y se distingue de la holograf\u00eda normal porque dos rayos, uno ordinario y el otro extraordinario, producidos por un cristal birrefringente interfieren y adem\u00e1s se utiliza una fuente de luz incoherente. Aunque la holograf\u00eda conosc\u00f3pica es una tecnolog\u00eda prometedora, tiene algunas limitaciones. En este trabajo se han desarrollado algoritmos de visi\u00f3n artificial con el objetivo de corregir los defectos de la holograf\u00eda conosc\u00f3pica y mejorar su rendimiento. El trabajo se centra sobre todo en la recuperaci\u00f3n de la informaci\u00f3n contenida en los hologramas. Los patrones resultantes se analizan utilizando t\u00e9cnicas de visi\u00f3n artificial. El primer algoritmo propuesto se emplea para hallar la distancia a la que se encuentra el objeto una vez que se ha identificado el holograma. A continuaci\u00f3n, se propone otro algoritmo que ayuda a reducir el n\u00famero de componentes \u00f3pticos, de manera que se abarata el sistema. Por \u00faltimo, se estudia la aplicaci\u00f3n de soluciones de visi\u00f3n artificial para prop\u00f3sitos industriales. Se muestra que habiendo simplificado la extracci\u00f3n de la informaci\u00f3n del holograma, se facilita la aplicaci\u00f3n del m\u00e9todo en l\u00ednea. Adem\u00e1s el rango de aplicaci\u00f3n del sistema tambi\u00e9n se extiende a otras \u00e1reas gracias a la visi\u00f3n artificial.   a variety of both industrial and non industrial applications utilize non contact methods that perform surface measurements. In industry today, classical inspection and quality control measures do not often suit the task for which they are required, owing to the working environment, material under inspection and the defects being detected. Conoscopic holography (ch) is a novel non-contact high-precision measure technique which, right from its inception, has presented bright prospects, offering measurements of high accuracy using easily manageable prototypes applicable in adverse environments. Conoscopic holography is an interferometric technique that differs from conventional holography in that the resulting interference is produced by the use of an ordinary and an extraordinary ray originating from a point source incident on a birefringent crystal. Although ch is a promising industrial technology, it has a few drawbacks. In this thesis, computer visi\u00f3n (cv) algorithms have been developed with the aim of resolving the pertinent problems affecting the efficient performance of ch. Special emphasis has been placed on the recovery of distance information from the holograms. The resulting interference pattern is treated as an image for the analysis using cv techmques. Patterns in the image are identified and subsequently related using image algebra to solve for the distance from an object being observed by the conoscope. Another algorithm is proposed, whose aim is to do away with some physical components that make the system more expensive. Lastly, the application of the computer vision solutions for industrial purposes is studied. It is shown that having simplified the extraction of the hologram information, application of the method on line is made easier. The range of application is also extended to other areas thanks to the combination with cv<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Computer vivision algorithms applied to a conoscopic holography system<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Computer vivision algorithms applied to a conoscopic holography system <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Julius Butime <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Navarra<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 30\/11\/2007<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3>Direcci\u00f3n y tribunal<\/h3>\n<ul>\n<li><strong>Director de la tesis<\/strong>\n<ul>\n<li>I\u00f1igo Gutierrez Garcia<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: Carlos Bastero de eleizalde <\/li>\n<li>ane Martinez de guere\u00f1u elorza (vocal)<\/li>\n<li>nekane ione Sainz bedoya (vocal)<\/li>\n<li>Luis galo Corzo marticorena (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Julius Butime Computer vision algorithms applied to a conoscopic holography system #resumen: los m\u00e9todos sin contacto de 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