{"id":21038,"date":"2025-03-31T11:23:20","date_gmt":"2025-03-31T09:23:20","guid":{"rendered":"https:\/\/www.univ-smb.fr\/listic\/?p=21038"},"modified":"2025-04-02T11:36:15","modified_gmt":"2025-04-02T09:36:15","slug":"soutenance-de-these-guilhem-marsy-22-septembre-2020apport-de-limagerie-optique-time-lapse-stereoscopique-pour-la-quantification-a-haute-resolution-spatio-temporelle-4d-des-dy","status":"publish","type":"post","link":"https:\/\/www.univ-smb.fr\/listic\/archive-actualites\/soutenance-de-these-guilhem-marsy-22-septembre-2020apport-de-limagerie-optique-time-lapse-stereoscopique-pour-la-quantification-a-haute-resolution-spatio-temporelle-4d-des-dy\/","title":{"rendered":"Soutenance de th\u00e8se Guilhem Marsy, le 22 septembre 2020:Apport de l\u2019imagerie optique \u00ab time-lapse \u00bb st\u00e9r\u00e9oscopique pour la quantification \u00e0 haute r\u00e9solution spatio-temporelle (4D) des dynamiques de versants en montagne"},"content":{"rendered":"

R\u00e9sum\u00e9:\u00a0<\/strong><\/p>\n

Ce travail de th\u00e8se porte sur le d\u00e9veloppement d’un dispositif st\u00e9r\u00e9o time-lapse
\npour le suivi \u00e0 haute r\u00e9solution spatio-temporelle des mouvements de versants en
\nmontagne. Le dispositif est bas\u00e9 sur deux appareils photos fixes avec deux points
\nde vue diff\u00e9rents, qui enregistrent des images du mouvement \u00e9tudi\u00e9 de fa\u00e7on
\nautonome et quotidienne. Les images obtenues par ce dispositif sont trait\u00e9es par
\nun agencement de m\u00e9thodes qui permettent de calculer des champs de
\nd\u00e9placements tri-dimensionnels de la surface et des mod\u00e9lisations 3D de celle-ci.
\nLes r\u00e9sultats obtenus assurent un suivi spatialis\u00e9 de la surface d’\u00e9tude. Afin de
\nsuivre la dynamique du mouvement dans le temps nous proposons des m\u00e9thodes
\npermettant de combiner de nombreux couples de d\u00e9placements calcul\u00e9s entre
\ndiff\u00e9rentes dates. Ces m\u00e9thodes produisent des s\u00e9ries temporelles de
\nd\u00e9placements robustes au bruit et erreurs de mesures avec une indication sur la
\ndispersion des mesures. Les m\u00e9thodes d\u00e9velopp\u00e9es sont test\u00e9es sur deux sites
\nd’\u00e9tude : le glacier d’Argenti\u00e8re et le glacier rocheux du Laurichard. L’aspect et la
\ndynamique, diff\u00e9rents sur les deux sites ont permis la validation des m\u00e9thodes.
\nCette validation repose sur des indicateurs issus \u00e0 la fois des images du dispositif
\net de mesures provenant d’autres capteurs. Enfin, nous proposons une
\napplication, couplant notre dispositif et des mesures GPS in-situ, au calcul des
\nbilans de masse journalier du glacier d’Argenti\u00e8re.<\/p>\n

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

M. Etienne Berthier<\/b><\/span>
<\/span><\/span><\/span><\/div>\n
Directeur de recherche, LEGOS\u00a0<\/span>(rapporteur)<\/span><\/span><\/span>
<\/b><\/span><\/div>\n
M. Marc\u00a0 PIERROT-DESEILLIGNY<\/b><\/span>
<\/span><\/span><\/span><\/div>\n
Directrice de recherche, IGN<\/span><\/span>\u00a0<\/span><\/span>(rapporteur)<\/span><\/span><\/span>
<\/b><\/span><\/div>\n
M. Christophe DELACOURT<\/b><\/span>
<\/span><\/span><\/span><\/div>\n
Professeur des universit\u00e9s, UBO Brest<\/span><\/span>\u00a0<\/span><\/span>(examinateur)<\/span><\/span><\/span>
<\/b><\/span><\/div>\n
Mme. Marie-Aur\u00e9lie CHANUT<\/b><\/span><\/div>\n
Ing\u00e9nieure de recherche, CEREMA Centre-EST<\/span><\/span>\u00a0<\/span><\/span>(examinatrice)<\/span><\/span><\/span>
<\/b><\/span><\/div>\n
M. Emmanuel TROUV\u00c9<\/b><\/span>
<\/span><\/span><\/span><\/div>\n
Professeur des Universit\u00e9s, Universit\u00e9 Savoie Mont Blanc (Directeur)<\/span><\/span><\/span>
<\/b><\/span><\/div>\n
M. Flavien VERNIER<\/b><\/span>
<\/span><\/span><\/span><\/div>\n
Maitre de conf\u00e9rence, Universit\u00e9 Savoie Mont Blanc (co directeur)<\/span><\/span><\/span><\/div>\n
M. Xavier BODIN
\n<\/b><\/span><\/div>\n
Charg\u00e9 de recherche, CNRS\/Universit\u00e9 Savoie Mont Blanc (co directeur)<\/span><\/span><\/span><\/div>\n
M. William CASTAINGS
\n<\/b><\/span><\/div>\n
Directeur technique, TENEVIA (co directeur)<\/span><\/span><\/span><\/div>\n","protected":false},"excerpt":{"rendered":"

R\u00e9sum\u00e9:\u00a0 Ce travail de th\u00e8se porte sur le d\u00e9veloppement d’un dispositif st\u00e9r\u00e9o time-lapse pour le suivi \u00e0 haute r\u00e9solution spatio-temporelle des mouvements de versants en montagne. Le dispositif est bas\u00e9 sur deux appareils photos fixes […]<\/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-21038","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\/21038","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=21038"}],"version-history":[{"count":3,"href":"https:\/\/www.univ-smb.fr\/listic\/wp-json\/wp\/v2\/posts\/21038\/revisions"}],"predecessor-version":[{"id":21178,"href":"https:\/\/www.univ-smb.fr\/listic\/wp-json\/wp\/v2\/posts\/21038\/revisions\/21178"}],"wp:attachment":[{"href":"https:\/\/www.univ-smb.fr\/listic\/wp-json\/wp\/v2\/media?parent=21038"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.univ-smb.fr\/listic\/wp-json\/wp\/v2\/categories?post=21038"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.univ-smb.fr\/listic\/wp-json\/wp\/v2\/tags?post=21038"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}