{"id":6332,"date":"2026-10-19T09:48:46","date_gmt":"2026-10-19T09:48:46","guid":{"rendered":"https:\/\/phd.hi.is\/doktorsvorn\/doktorsvorn-i-rafmagns-og-tolvuverkfraedi-burkni-palsson\/"},"modified":"2026-10-19T09:48:46","modified_gmt":"2026-10-19T09:48:46","slug":"doktorsvorn-i-rafmagns-og-tolvuverkfraedi-burkni-palsson","status":"publish","type":"phd_defence","link":"https:\/\/phd.hi.is\/en\/doktorsvorn\/doktorsvorn-i-rafmagns-og-tolvuverkfraedi-burkni-palsson\/","title":{"rendered":"Doktorsv\u00f6rn \u00ed rafmagns- og t\u00f6lvuverkfr\u00e6\u00f0i – Burkni P\u00e1lsson"},"content":{"rendered":"
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Streymi:\u00a0<\/strong>https:\/\/livestream.com\/hi\/doktorsvornburknipalsson<\/a><\/p>\n

Doktorsefni:\u00a0<\/strong>Burkni P\u00e1lsson
<\/strong><\/p>\n

Heiti ritger\u00f0ar:\u00a0<\/strong>A\u00f0greining fj\u00f6lr\u00e1samynda me\u00f0 sj\u00e1lfk\u00f3\u00f0urum
<\/strong><\/p>\n

Andm\u00e6lendur:\u00a0<\/strong>Dr. Jie Chen, pr\u00f3fessor vi\u00f0 Northwestern Polytechnical h\u00e1sk\u00f3lann \u00ed K\u00edna og Dr. Ioannis Schizas, d\u00f3sent vi\u00f0 Texas h\u00e1sk\u00f3lann \u00ed Arlington, Texas, Bandar\u00edkjunum.\u00a0
<\/strong><\/p>\n

Lei\u00f0beinendur:\u00a0<\/strong>Dr. J\u00f3hannes R. Sveinsson og Dr. Magn\u00fas \u00d6rn \u00dalfarsson, pr\u00f3fessorar vi\u00f0 Rafmagns- og t\u00f6lvuverkfr\u00e6\u00f0ideild H\u00e1sk\u00f3la \u00cdslands.
<\/strong><\/p>\n

Einnig \u00ed doktorsnefnd:\u00a0<\/strong>Dr. Jocelyn Chanussot, pr\u00f3fessor vi\u00f0 Grenoble Institute of Technology in Grenoble, Frakklandi.<\/p>\n

Doktorsv\u00f6rn st\u00fdrir:\u00a0<\/strong>Dr. Lotta Mar\u00eda Ellingsen, d\u00f3sent og deildarforseti Rafmagns- og t\u00f6lvuverkfr\u00e6\u00f0ideildar.
<\/strong><\/p>\n

\u00c1grip<\/strong>
<\/strong><\/p>\n

\u00cd lj\u00f3sfr\u00e6\u00f0ilegri fjark\u00f6nnun (e. remote sensing) eru fj\u00f6lr\u00e1samyndir (e. hyperspectral images) myndir sem teknar eru af yfirbor\u00f0i jar\u00f0ar \u00far flugv\u00e9lum e\u00f0a gervitunglum og hafa tugi e\u00f0a hundru\u00f0i r\u00e1sa (e. channels) \u00fear sem hver r\u00e1s n\u00e6r yfir \u00fer\u00f6ngt t\u00ed\u00f0nisvi\u00f0 lj\u00f3ss. Hver myndeining (e. pixel) er \u00fev\u00ed litr\u00f3f og \u00fev\u00ed er h\u00e6gt a\u00f0 greina hva\u00f0a hrein efni eru \u00e1 myndinni. Hinsvegar er r\u00famupplausn sl\u00edkra mynda l\u00e1g og \u00fev\u00ed oft fleiri en eitt efni innan hverrar myndeiningar. A\u00f0greining fj\u00f6lr\u00e1samynda (e. blind hyperspectral unmixing) er a\u00f0ger\u00f0 \u00fear sem fundi\u00f0 er hver r\u00f3f hreinna efna eru \u00ed myndinni og hversu miki\u00f0 er af hverju efni \u00ed hverri myndeiningu. Efni ritger\u00f0arinnar er a\u00f0greining fj\u00f6lr\u00e1samynda me\u00f0 sj\u00e1lfk\u00f3\u00f0urum (e. autoencoders) bygg\u00f0um \u00e1 dj\u00fapum l\u00e6rd\u00f3mi (e. deep learning). Tv\u00e6r a\u00f0fer\u00f0ir bygg\u00f0ar \u00e1 sj\u00e1lfk\u00f3\u00f0urum eru kynntar og rannsaka\u00f0ar. B\u00e1\u00f0ar a\u00f0fer\u00f0irnar leitast vi\u00f0 a\u00f0 n\u00fdta s\u00e9r r\u00famfr\u00e6\u00f0ilega fylgni r\u00f3fa \u00ed fj\u00f6lr\u00e1samyndum til a\u00f0 b\u00e6ta \u00e1rangur a\u00f0greiningar. Ein a\u00f0fer\u00f0 me\u00f0 a\u00f0 n\u00fdta s\u00e9r fj\u00f6lbeitingarl\u00e6rd\u00f3m (e. multitask learning) og hin me\u00f0 a\u00f0 nota sj\u00e1lfk\u00f3\u00f0ara \u00fatf\u00e6r\u00f0an me\u00f0 f\u00f6ldunartaugnaneti (e. convolutional neural network). Hvortveggja b\u00e6tir samkv\u00e6mni og h\u00e6fni fj\u00f6lr\u00e1sagreiningarinnar. Ennfremur inniheldur ritger\u00f0in yfirgripsmiki\u00f0 yfirlit yfir \u00fe\u00e6r sj\u00e1lfk\u00f3\u00f0araa\u00f0fer\u00f0ir sem hafa veri\u00f0 birtar \u00e1samt greinarg\u00f3\u00f0ri umr\u00e6\u00f0u um mismunandi ger\u00f0ir sj\u00e1lfk\u00f3\u00f0ara og \u00fatf\u00e6rslur \u00e1 \u00feeim. \u00ed lok ritger\u00f0arinnar er svo a\u00f0 finna gagnr\u00fdninn samanbur\u00f0 \u00e1 11 mismunandi a\u00f0fer\u00f0um bygg\u00f0um \u00e1 sj\u00e1lfk\u00f3\u00f0urum. Brottn\u00e1ms (e. ablation) tilraunir eru ger\u00f0ar til a\u00f0 svara spurningunni hvers vegna sj\u00e1lfk\u00f3\u00f0arar eru svo \u00e1rangursr\u00edkir \u00ed fj\u00f6lr\u00e1sagreiningu og stuttlega r\u00e6tt um hva\u00f0 framt\u00ed\u00f0in ber \u00ed skauti s\u00e9r var\u00f0andi a\u00f0greiningu fj\u00f6lr\u00e1samynda me\u00f0 sj\u00e1lfk\u00f3\u00f0urum.<\/p>\n

Um doktorsefni\u00f0<\/strong><\/p>\n

Burkni P\u00e1lsson f\u00e6ddist \u00ed Reykjav\u00edk \u00e1ri\u00f0 1974. Hann \u00fatskrifa\u00f0ist me\u00f0 B.Sc. gr\u00e1\u00f0ur \u00ed e\u00f0lisfr\u00e6\u00f0i og st\u00e6r\u00f0fr\u00e6\u00f0i fr\u00e1 H\u00e1sk\u00f3la \u00cdslands \u00e1ri\u00f0 1999 og B.Sc. gr\u00e1\u00f0u \u00ed orku- og umhverfist\u00e6knifr\u00e6\u00f0i fr\u00e1 sama sk\u00f3la \u00e1ri\u00f0 2012. \u00c1ri\u00f0 2017 h\u00f3f Burkni meistara- og doktorsn\u00e1m \u00ed rafmagns-og t\u00f6lvuverkfr\u00e6\u00f0i vi\u00f0 H\u00e1sk\u00f3la \u00cdslands og \u00fatskrifa\u00f0ist me\u00f0 meistaragr\u00e1\u00f0u \u00far \u00feeirri deild \u00e1ri\u00f0 2020. Burkni hefur fr\u00e1 \u00e1rinu 2012 starfa\u00f0 sem t\u00e6knistj\u00f3ri Geosilica Iceland \u00e1samt \u00fev\u00ed a\u00f0 stunda kennslu vi\u00f0 t\u00e6knifr\u00e6\u00f0ibraut H\u00e1sk\u00f3la \u00cdslands fr\u00e1 \u00e1rinu 2013 til 2018. Ranns\u00f3knar\u00e1herslur Burkna eru merkjafr\u00e6\u00f0i, fjark\u00f6nnun, v\u00e9lr\u00e6n l\u00e6rd\u00f3mur, og dj\u00fapur l\u00e6rd\u00f3mur.<\/p>\n<\/div><\/div>","protected":false},"featured_media":5617,"template":"","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","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":"","ast-disable-related-posts":"","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":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","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-opacity":"","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-opacity":"","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-opacity":"","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-opacity":"","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-opacity":"","overlay-gradient":""}},"_phd_date_start":"2023-10-02T14:00:00+00:00","_phd_date_end":"2023-10-02T16:00:00+00:00","_phd_location":"A\u00f0albygging H\u00e1t\u00ed\u00f0asalur","_phd_admission":"A\u00f0gangur \u00f3keypis","_phd_thesis_title":"A\u00f0greining fj\u00f6lr\u00e1samynda me\u00f0 sj\u00e1lfk\u00f3\u00f0urum","_phd_source_url":"https:\/\/gamli.hi.is\/vidburdir\/doktorsvorn_i_rafmagns_og_tolvuverkfraedi_burkni_palsson","_phd_source_node_id":"422623","_phd_source_type":"vidburdir","_phd_member_id":869,"footnotes":""},"phd_school":[94,93],"phd_discipline":[95],"class_list":["post-6332","phd_defence","type-phd_defence","status-publish","has-post-thumbnail","hentry","phd_school-rafmagns-og-tolvuverkfraedideild","phd_school-verkfraedi-og-natturuvisindasvid","phd_discipline-phd-i-rafmagns-og-tolvuverkfraedi"],"_links":{"self":[{"href":"https:\/\/phd.hi.is\/en\/wp-json\/wp\/v2\/phd_defence\/6332","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/phd.hi.is\/en\/wp-json\/wp\/v2\/phd_defence"}],"about":[{"href":"https:\/\/phd.hi.is\/en\/wp-json\/wp\/v2\/types\/phd_defence"}],"version-history":[{"count":0,"href":"https:\/\/phd.hi.is\/en\/wp-json\/wp\/v2\/phd_defence\/6332\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/phd.hi.is\/en\/wp-json\/wp\/v2\/media\/5617"}],"wp:attachment":[{"href":"https:\/\/phd.hi.is\/en\/wp-json\/wp\/v2\/media?parent=6332"}],"wp:term":[{"taxonomy":"phd_school","embeddable":true,"href":"https:\/\/phd.hi.is\/en\/wp-json\/wp\/v2\/phd_school?post=6332"},{"taxonomy":"phd_discipline","embeddable":true,"href":"https:\/\/phd.hi.is\/en\/wp-json\/wp\/v2\/phd_discipline?post=6332"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}