{"id":21113,"date":"2025-03-31T16:13:39","date_gmt":"2025-03-31T14:13:39","guid":{"rendered":"https:\/\/www.univ-smb.fr\/listic\/?p=21113"},"modified":"2025-04-02T11:35:34","modified_gmt":"2025-04-02T09:35:34","slug":"soutenance-de-these-de-hela-hadhri-25-juin-2020traitement-automatique-de-time-lapses-stereoscopiques-de-milieux-naturelsapplication-a-la-surveillance-de-glaciers-alpins","status":"publish","type":"post","link":"https:\/\/www.univ-smb.fr\/listic\/archive-actualites\/soutenance-de-these-de-hela-hadhri-25-juin-2020traitement-automatique-de-time-lapses-stereoscopiques-de-milieux-naturelsapplication-a-la-surveillance-de-glaciers-alpins\/","title":{"rendered":"Soutenance de th\u00e8se\u00a0 de H\u00e9la HADHRI,le 25 juin 2020:Traitement automatique de time-lapses st\u00e9r\u00e9oscopiques de milieux naturels,application \u00e0 la surveillance de glaciers alpins"},"content":{"rendered":"

R\u00e9sum\u00e9:<\/strong><\/p>\n

Nous essayons dans cette th\u00e8se de r\u00e9soudre ces probl\u00e9matiques en proposant une cha\u00eene de
\ntraitements automatique de s\u00e9ries temporelles d\u2019images (time-lapses) st\u00e9r\u00e9oscopiques pour l\u2019observation de mouvements gravitaires tels que le d\u00e9placement de glaciers alpins. Nous \u00e9tudions
\ntout d\u2019abord les diff\u00e9rentes strat\u00e9gies de traitement possibles selon une taxonomie \u00e0 plusieurs
\nniveaux des donn\u00e9es \u00e0 disposition : monoscopiques et st\u00e9r\u00e9oscopiques, monodates et bidates,
\ntemporelles et multi-temporelles. Nous proposons ensuite une suite compl\u00e9mentaire de traitements automatiques robustes qui repose sur un choix justifi\u00e9 de repr\u00e9sentations et de mod\u00e8les
\ng\u00e9om\u00e9triques et temporels r\u00e9gissant le lien entre ces diff\u00e9rents types de donn\u00e9es. En particulier, nous \u00e9valuons l\u2019incertitude via une approche g\u00e9om\u00e9trique et maximisons la coh\u00e9rence des
\nestimations de v\u00e9locit\u00e9 m\u00e9trique issues des briques fondamentales de la cha\u00eene de traitements
\nvia l\u2019optimisation d\u2019une fonctionnelle tenant compte de descripteurs spatio-temporels, d\u2019une
\ncontrainte de fermeture temporelle des champs de d\u00e9placements intra time-lapse et enfin du
\nsens et de la stationnarit\u00e9 de l\u2019\u00e9coulement de glaciers alpins.<\/p>\n

Ces travaux s\u2019inscrivent dans le contexte du r\u00e9chauffement climatique et son impact sur la
\ncryosph\u00e8re. La surveillance proximale continue de glaciers alpins via un syst\u00e8me d\u2019observation
\nd\u00e9di\u00e9 ouvre en effet de nouvelles perspectives quant \u00e0 une quantification d\u2019indicateurs m\u00e9triques
\ncorr\u00e9l\u00e9s \u00e0 l\u2019\u00e9volution des temp\u00e9ratures et des pr\u00e9cipitations. Nous appliquons les m\u00e9thodes propos\u00e9es sur des donn\u00e9es acquises sur le site du glacier d\u2019Argenti\u00e8re dans le massif du Mont-Blanc.
\nLes s\u00e9ries temporelles de suivi m\u00e9trique g\u00e9or\u00e9f\u00e9renc\u00e9 de la v\u00e9locit\u00e9 d\u2019une partie de ce glacier
\nsont ainsi g\u00e9n\u00e9r\u00e9es avec une estimation de leurs incertitudes sur l\u2019ensemble des donn\u00e9es acquises .
\nen 2018.<\/p>\n

Le jury est compos\u00e9 de :<\/p>\n

Sous la direction de Emmanuel Trouv\u00e9, Professeur des Universit\u00e9s
\nSous la co-direction de Abdourahmane Atto, Ma\u00eetre de conf\u00e9rences
\nSous la supervision de Flavien Vernier, Ma\u00eetre de conf\u00e9rences
\nMembres ext\u00e9rieurs:
\nPr\u00e9sident du jury : Marie-Odile Berger, Dir. de recherche, INRIA \/ LORIA, Nancy.
\nExaminateur : Antoine Rabatel, Charg\u00e9 de recherche, IGE, Grenoble.
\nRapporteur : C\u00e9dric Demonceaux, Prof. des Universit\u00e9s, Le2i, Le Creusot.
\nRapporteur : Jean-Philippe Malet, Dir. de recherche, EOST \/ IPGS, Starsbourg<\/p>\n","protected":false},"excerpt":{"rendered":"

R\u00e9sum\u00e9: Nous essayons dans cette th\u00e8se de r\u00e9soudre ces probl\u00e9matiques en proposant une cha\u00eene de traitements automatique de s\u00e9ries temporelles d\u2019images (time-lapses) st\u00e9r\u00e9oscopiques pour l\u2019observation de mouvements gravitaires tels que le d\u00e9placement de glaciers alpins. […]<\/p>\n","protected":false},"author":499,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_seopress_titles_title":"","_seopress_titles_desc":"","_seopress_robots_index":"","_seopress_robots_follow":"","_seopress_robots_imageindex":"","_seopress_robots_snippet":"","_seopress_robots_primary_cat":"","_seopress_robots_breadcrumbs":"","_seopress_robots_freeze_modified_date":"","_seopress_robots_custom_modified_date":"","_seopress_robots_canonical":"","_seopress_social_fb_title":"","_seopress_social_fb_desc":"","_seopress_social_fb_img":"","_seopress_social_fb_img_attachment_id":0,"_seopress_social_fb_img_width":0,"_seopress_social_fb_img_height":0,"_seopress_social_twitter_title":"","_seopress_social_twitter_desc":"","_seopress_social_twitter_img":"","_seopress_social_twitter_img_attachment_id":0,"_seopress_social_twitter_img_width":0,"_seopress_social_twitter_img_height":0,"_seopress_redirections_value":"","_seopress_redirections_enabled":"","_seopress_redirections_enabled_regex":"","_seopress_redirections_logged_status":"","_seopress_redirections_param":"","_seopress_redirections_type":0,"_seopress_analysis_target_kw":"","_seopress_news_disabled":"","_seopress_video_disabled":"","_seopress_video":[],"_seopress_pro_schemas_manual":[],"_seopress_pro_rich_snippets_disable_all":"","_seopress_pro_rich_snippets_disable":[],"_seopress_pro_schemas":[],"_relevanssi_hide_post":"","_relevanssi_hide_content":"","_relevanssi_pin_for_all":"","_relevanssi_pin_keywords":"","_relevanssi_unpin_keywords":"","_relevanssi_related_keywords":"","_relevanssi_related_include_ids":"","_relevanssi_related_exclude_ids":"","_relevanssi_related_no_append":"","_relevanssi_related_not_related":"","_relevanssi_related_posts":"","_relevanssi_noindex_reason":"","_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":false},"categories":[19],"tags":[],"class_list":["post-21113","post","type-post","status-publish","format-standard","hentry","category-archive-actualites"],"acf":[],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/www.univ-smb.fr\/listic\/wp-json\/wp\/v2\/posts\/21113","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.univ-smb.fr\/listic\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.univ-smb.fr\/listic\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.univ-smb.fr\/listic\/wp-json\/wp\/v2\/users\/499"}],"replies":[{"embeddable":true,"href":"https:\/\/www.univ-smb.fr\/listic\/wp-json\/wp\/v2\/comments?post=21113"}],"version-history":[{"count":2,"href":"https:\/\/www.univ-smb.fr\/listic\/wp-json\/wp\/v2\/posts\/21113\/revisions"}],"predecessor-version":[{"id":21175,"href":"https:\/\/www.univ-smb.fr\/listic\/wp-json\/wp\/v2\/posts\/21113\/revisions\/21175"}],"wp:attachment":[{"href":"https:\/\/www.univ-smb.fr\/listic\/wp-json\/wp\/v2\/media?parent=21113"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.univ-smb.fr\/listic\/wp-json\/wp\/v2\/categories?post=21113"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.univ-smb.fr\/listic\/wp-json\/wp\/v2\/tags?post=21113"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}