{"id":6311,"date":"2026-10-19T09:48:45","date_gmt":"2026-10-19T09:48:45","guid":{"rendered":"https:\/\/phd.hi.is\/doktorsvorn\/doktorsvorn-i-rafmagns-og-tolvuverkfraedi-han-van-nguyen\/"},"modified":"2026-10-19T09:48:45","modified_gmt":"2026-10-19T09:48:45","slug":"doktorsvorn-i-rafmagns-og-tolvuverkfraedi-han-van-nguyen","status":"publish","type":"phd_defence","link":"https:\/\/phd.hi.is\/en\/doktorsvorn\/doktorsvorn-i-rafmagns-og-tolvuverkfraedi-han-van-nguyen\/","title":{"rendered":"Doktorsv\u00f6rn \u00ed rafmagns- og t\u00f6lvuverkfr\u00e6\u00f0i &#8211; Han Van Nguyen"},"content":{"rendered":"<div class=\"field-items\">\n<div class=\"field-item even\" property=\"content:encoded\">\n<p><a href=\"https:\/\/livestream.com\/hi\/doktorsvornhanvannguyen\"><strong>Streymi<\/strong><\/a><\/p>\n<p><strong>Doktorsefni:<\/strong>\u00a0Han Van Nguyen<\/p>\n<p><strong>Heiti ritger\u00f0ar:\u00a0<\/strong>\u00a0\u00d3lei\u00f0beindar dj\u00fapn\u00e1msa\u00f0fer\u00f0ir til \u00feess a\u00f0 skerpa og su\u00f0s\u00eda fjark\u00f6nnunarmyndir.<\/p>\n<p><strong>Andm\u00e6lendur:<\/strong>\u00a0Dr. Danfeng Hong, pr\u00f3fessor vi\u00f0\u00a0Aerospace Information Research Institute, Chinese Academy of Sciences, K\u00edna.<br \/>Dr. Farid Melgani, pr\u00f3fessor vi\u00f0 Department of Information Engineering and Computer Science, University of Trento, \u00cdtal\u00edu.<strong><br \/><\/strong><\/p>\n<p><strong>Lei\u00f0beinendur\u00a0<\/strong>Dr.\u00a0Magn\u00fas \u00d6rn \u00dalfarsson, pr\u00f3fessor vi\u00f0 Rafmagns- og t\u00f6lvuverkfr\u00e6\u00f0ideild H\u00cd<br \/>Dr.\u00a0J\u00f3hannes R\u00fanar Sveinsson, pr\u00f3fessor vi\u00f0 Rafmagns- og t\u00f6lvuverkfr\u00e6\u00f0ideild H\u00cd.<\/p>\n<p><strong>Einnig \u00ed doktorsnefnd:<\/strong><br \/>Dr. Mauro Dalla Mura,\u00a0GIPSA-lab, Signal and Image Department, Grenoble Institute of Technology (INP), Frakkland.<strong><\/strong><\/p>\n<p><strong>Doktorsv\u00f6rn st\u00fdrir:<\/strong>\u00a0Dr. Lotta Mar\u00eda Ellingsen d\u00f3sent og deildarforseti Rafmagns- og t\u00f6lvuverkfr\u00e6\u00f0ideildar H\u00cd.<\/p>\n<p><strong>\u00c1grip<\/strong><\/p>\n<p>Lj\u00f3sfr\u00e6\u00f0ileg fjark\u00f6nnun (RS) notar myndskynjara til a\u00f0 taka myndir af yfirbor\u00f0i jar\u00f0ar. \u00deessir myndskynjarar eru festir \u00e1 gervihnetti e\u00f0a flugv\u00e9lar og fanga s\u00fdnilega, n\u00e6r-innrau\u00f0a og stuttbylgju-innrau\u00f0a geislun sem endurkastast fr\u00e1 yfirbor\u00f0i jar\u00f0ar. Lj\u00f3sfr\u00e6\u00f0ileg fjark\u00f6nnunarmyndkerfi eru skilgreind \u00fatfr\u00e1 fj\u00f6lda t\u00ed\u00f0nibanda og helstu tegundir mynda eru margr\u00e1sa myndir (e. multispectral images (MSI)), og fj\u00f6lr\u00e1samyndir (e. hyperspectral images (HSI)). Af verkfr\u00e6\u00f0ilegum og e\u00f0lisfr\u00e6\u00f0ilegum \u00e1st\u00e6\u00f0um hafa \u00feessar myndir r\u00fdmisupplausn (e. spatial resolution) sem er t\u00ed\u00f0nih\u00e1\u00f0 og einnig innihalda \u00feessar myndir oft su\u00f0. \u00cd \u00feessari ritger\u00f0 er l\u00f6g\u00f0 \u00e1hersla \u00e1 a\u00f0 auka g\u00e6\u00f0i MSI og HSI b\u00e6\u00f0i me\u00f0 \u00fev\u00ed a\u00f0 su\u00f0s\u00eda \u00fe\u00e6r (e. denoising) og auka r\u00fdmisupplausn \u00feeirra me\u00f0 myndsambr\u00e6\u00f0slu (skerping) (e. image fusion). \u00deessi ritger\u00f0 er \u00fer\u00f3ar n\u00fdjar a\u00f0fer\u00f0ir sem eru bygg\u00f0ar \u00e1 \u00fev\u00ed a\u00f0 nota \u00f3lei\u00f0beindar dj\u00fapn\u00e1msa\u00f0fer\u00f0ir (e. deep learning) sem byggja \u00e1 f\u00f6ldunarnetum (e. convolution neural networks) til a\u00f0 su\u00f0s\u00ed\u00f0a og skerpa MSI og HSI myndir. Til \u00feess a\u00f0 \u00fer\u00f3a \u00feessar a\u00f0fer\u00f0ir eru nota\u00f0ar hugmyndir fr\u00e1 merkjafr\u00e6\u00f0i og t\u00f6lfr\u00e6\u00f0i eins og t.d., notkun \u00e1 t\u00ed\u00f0nisv\u00f6run myndskynjarana, SURE (e. Stein&#8217;s unbiased risk estimator), r\u00fdr merkjafr\u00e6\u00f0i (e. sparse signal processing), og a\u00f0 fjark\u00f6nnunarmyndir &#8222;lifa&#8220; oft \u00ed st\u00e6r\u00f0fr\u00e6\u00f0ilegu r\u00fami af miklu l\u00e6gri v\u00eddd en \u00fe\u00e6r eru teknar \u00e1.<\/p>\n<p><strong>Um doktorsefni\u00f0<\/strong><\/p>\n<p>Han Van Nguyen f\u00e6ddist 1985 \u00ed Hai Duong, Vietnam. Hann lauk BS gr\u00e1\u00f0u \u00ed uppl\u00fdsinga- og fjarskiptaverkfr\u00e6\u00f0i fr\u00e1 H\u00e1sk\u00f3lanum \u00ed Hanoi, \u00ed Hanoi \u00e1ri\u00f0 2008 og lauk s\u00ed\u00f0an MS gr\u00e1\u00f0u \u00e1ri\u00f0 2014 \u00ed uppl\u00fdsinga- og fjarskiptaverkfr\u00e6\u00f0i fr\u00e1 H\u00e1sk\u00f3lanum \u00ed Chosun \u00ed Su\u00f0ur Koreu. Hann h\u00f3f doktorsn\u00e1m vi\u00f0 rafmagns- og t\u00f6lvuverkfr\u00e6\u00f0ideild H\u00e1sk\u00f3la \u00cdslands \u00e1ri\u00f0 2019. Fr\u00e1 \u00e1rinu 2010 hefur hann veri\u00f0 stundakennari vi\u00f0 Rafmagns- og t\u00f6lvuverkfr\u00e6\u00f0ideild Nha Trang H\u00e1sk\u00f3la \u00ed Vietnam. Ranns\u00f3knar\u00e1herslur Han Van Nguyen 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":5412,"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":"2022-12-08T13:00:00+00:00","_phd_date_end":"2022-12-08T15:00:00+00:00","_phd_location":"A\u00f0albygging H\u00e1t\u00ed\u00f0asalur","_phd_admission":"A\u00f0gangur \u00f3keypis","_phd_thesis_title":"\u00d3lei\u00f0beindar dj\u00fapn\u00e1msa\u00f0fer\u00f0ir til \u00feess a\u00f0 skerpa og su\u00f0s\u00eda fjark\u00f6nnunarmyndir","_phd_source_url":"https:\/\/gamli.hi.is\/vidburdir\/doktorsvorn_i_rafmagns_og_tolvuverkfraedi_han_van_nguyen","_phd_source_node_id":"391255","_phd_source_type":"vidburdir","_phd_member_id":845,"footnotes":""},"phd_school":[94,93],"phd_discipline":[95],"class_list":["post-6311","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\/6311","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\/6311\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/phd.hi.is\/en\/wp-json\/wp\/v2\/media\/5412"}],"wp:attachment":[{"href":"https:\/\/phd.hi.is\/en\/wp-json\/wp\/v2\/media?parent=6311"}],"wp:term":[{"taxonomy":"phd_school","embeddable":true,"href":"https:\/\/phd.hi.is\/en\/wp-json\/wp\/v2\/phd_school?post=6311"},{"taxonomy":"phd_discipline","embeddable":true,"href":"https:\/\/phd.hi.is\/en\/wp-json\/wp\/v2\/phd_discipline?post=6311"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}