{"id":36841,"date":"1998-01-01T00:00:00","date_gmt":"1998-01-01T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/aportaciones-a-la-compresion-de-datos-de-la-senal-electrocardiografica-mediante-transformadas-ortogonales\/"},"modified":"1998-01-01T00:00:00","modified_gmt":"1998-01-01T00:00:00","slug":"aportaciones-a-la-compresion-de-datos-de-la-senal-electrocardiografica-mediante-transformadas-ortogonales","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/matematicas\/aportaciones-a-la-compresion-de-datos-de-la-senal-electrocardiografica-mediante-transformadas-ortogonales\/","title":{"rendered":"Aportaciones a la compresion de datos de la se\u00f1al electrocardiografica mediante transformadas ortogonales."},"content":{"rendered":"<h2>Tesis doctoral de <strong> Salvador Olmos Gasso <\/strong><\/h2>\n<p>En la presente tesis doctoral se presentan nuevas t\u00e9cnicas para la codificaci\u00f3n eficiente de la se\u00f1al electrocardiogr\u00e1fica (ecg). Para ello se utilizan diversas transformaciones ortogonales que logran concentrar la mayor parte de la informaci\u00f3n de la se\u00f1al (energ\u00eda) en un n\u00famero reducido de coeficientes. Con estos coeficientes se logra reconstruir de forma muy aproximada a la se\u00f1al original obteni\u00e9ndose una elevada relaci\u00f3n de compresi\u00f3n.  se analizan transformaciones ortogonales cuyas funciones base se adaptan a la morfolog\u00eda de la se\u00f1al de entrada. En particular se consideran la transformada de hermite, la transformada \u00f3ptima de karhunen-lo\u00e9ve y expansiones ortogonales con wavelet-packets. La soluci\u00f3n con wavelet-packets es la que proporciona mejores prestaciones ya que necesita un volumen de informaci\u00f3n lateral mucho menor que la transformada \u00f3ptima de karhunen-lo\u00e9ve. las relaicones de compresi\u00f3n obtenidas en esta tesis superan a las publicadas por otros m\u00e9todos de compresi\u00f3n de la se\u00f1al ecg.  los coeficientes transformados se calculan mediante producto escalar y estimaci\u00f3n adaptativa con el algoritmo lms. se demuestra que ambos sistemas son equivalentes a un filtrado lineal variante en el tiempo y peri\u00f3dico. Esta nueva interpretaci\u00f3n permite cuantificar la distorsi\u00f3n introducida al utilizar un reducido n\u00famero de funciones base, as\u00ed como la distorsi\u00f3n originada por un desalineamiento entre la se\u00f1al de entrada y las funciones base. adem\u00e1s se realiza un an\u00e1lisis de referencia son un reducido n\u00famero de funciones las funciones base de una transformada.  la se\u00f1al ecg siempre aparece contaminada por ruido, por lo que se realiza un an\u00e1lisis del efecto del ruido en la estimaci\u00f3n de los coeficientes transformados, comparando las prestaciones del producto escalar respecto a la estimaci\u00f3n adaptativa con el algoritmo lms. Se consideran los casos de se\u00f1ales estacionarias y se\u00f1ales no es<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Aportaciones a la compresion de datos de la se\u00f1al electrocardiografica mediante transformadas ortogonales.<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Aportaciones a la compresion de datos de la se\u00f1al electrocardiografica mediante transformadas ortogonales. <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Salvador Olmos Gasso <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Polit\u00e9cnica de catalunya<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 01\/01\/1998<\/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>Pablo Laguna Lasaosa<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: pere Caminal magrans <\/li>\n<li>gregori Vazquez grau (vocal)<\/li>\n<li>enrique Masgrau gomez (vocal)<\/li>\n<li>enrique Gomez aguilera (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Salvador Olmos Gasso En la presente tesis doctoral se presentan nuevas t\u00e9cnicas para la codificaci\u00f3n eficiente de [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"footnotes":""},"categories":[1890,332,15966,126,15596,2489],"tags":[54123,15974,16178,42598,14097,97227],"class_list":["post-36841","post","type-post","status-publish","format-standard","hentry","category-ciencia-de-los-ordenadores","category-ciencias-tecnologicas","category-computacion-digital","category-matematicas","category-politecnica-de-catalunya","category-tecnologia-de-las-telecomunicaciones","tag-enrique-gomez-aguilera","tag-enrique-masgrau-gomez","tag-gregori-vazquez-grau","tag-pablo-laguna-lasaosa","tag-pere-caminal-magrans","tag-salvador-olmos-gasso"],"_links":{"self":[{"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/posts\/36841","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/comments?post=36841"}],"version-history":[{"count":0,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/posts\/36841\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/media?parent=36841"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/categories?post=36841"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/tags?post=36841"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}