{"id":853,"date":"2025-06-24T11:17:24","date_gmt":"2025-06-24T09:17:24","guid":{"rendered":"https:\/\/opi-test.univ-lemans.fr\/?p=853"},"modified":"2025-06-26T18:57:23","modified_gmt":"2025-06-26T16:57:23","slug":"seuillage-par-hysteresis","status":"publish","type":"post","link":"https:\/\/optique-ingenieur.org\/?p=853","title":{"rendered":"Seuillage par hyst\u00e9r\u00e9sis"},"content":{"rendered":"<h4>Auteur(s) :<\/h4>\n<p style=\"padding-left: 40px;\"><span style=\"color: #3b8dbd;\"><strong>Jean-Hugh THOMAS<\/strong><\/span> \u2013 ENSIM &#8211; Le Mans Universit\u00e9<\/p>\n<h4>Contexte :<\/h4>\n<p style=\"padding-left: 40px;\">Apr\u00e8s calcul du module du gradient, un seuillage par hyst\u00e9r\u00e9sis est employ\u00e9. L&rsquo;animation permet de montrer l&rsquo;int\u00e9r\u00eat de cette technique. L&rsquo;id\u00e9e est d&rsquo;obtenir un compromis entre contours trop s\u00e9lectifs et contours pas assez s\u00e9lectifs, compromis qui ne serait pas atteignable avec un seuil unique. En cliquant successivement sur les deux boutons de gauche, la capacit\u00e9 du seuillage par hyst\u00e9r\u00e9sis \u00e0 ajouter des contours par rapport \u00e0 l&rsquo;image tr\u00e8s s\u00e9lective est soulign\u00e9e. Par des clics similaires sur les boutons de droite, la capacit\u00e9 du seuillage par hyst\u00e9r\u00e9sis \u00e0 r\u00e9duire le nombre de contours par rapport \u00e0 une image pas assez s\u00e9lective est mise en \u00e9vidence (seuils utilis\u00e9s : seuil haut \u00e0 72 %, seuil bas \u00e0 60 %).<\/p>\n<div class=\"wp-block-uagb-buttons uagb-buttons__outer-wrap uagb-btn__default-btn uagb-btn-tablet__default-btn uagb-btn-mobile__default-btn uagb-block-7cf61b02\">\n<div class=\"uagb-buttons__wrap uagb-buttons-layout-wrap \"> <\/div>\n<\/div>\n\n\n<iframe src=\"modules\/animations\/OPI_anim_M02C02A03_JHT.html\" width=100% height=\"600\" allow=\"fullscreen\"><\/iframe>\n","protected":false},"excerpt":{"rendered":"<p>Auteur(s) : Jean-Hugh THOMAS \u2013 ENSIM &#8211; Le Mans Universit\u00e9 Contexte : Apr\u00e8s calcul du module du gradient, un seuillage par hyst\u00e9r\u00e9sis est employ\u00e9. L&rsquo;animation permet de montrer l&rsquo;int\u00e9r\u00eat de cette technique. L&rsquo;id\u00e9e est&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":1021,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_uag_custom_page_level_css":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-853","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-animations"],"uagb_featured_image_src":{"full":["https:\/\/optique-ingenieur.org\/wp-content\/uploads\/2025\/06\/hysteresis.jpg",883,603,false],"thumbnail":["https:\/\/optique-ingenieur.org\/wp-content\/uploads\/2025\/06\/hysteresis-150x150.jpg",150,150,true],"medium":["https:\/\/optique-ingenieur.org\/wp-content\/uploads\/2025\/06\/hysteresis-300x205.jpg",300,205,true],"medium_large":["https:\/\/optique-ingenieur.org\/wp-content\/uploads\/2025\/06\/hysteresis-768x524.jpg",768,524,true],"large":["https:\/\/optique-ingenieur.org\/wp-content\/uploads\/2025\/06\/hysteresis.jpg",883,603,false],"1536x1536":["https:\/\/optique-ingenieur.org\/wp-content\/uploads\/2025\/06\/hysteresis.jpg",883,603,false],"2048x2048":["https:\/\/optique-ingenieur.org\/wp-content\/uploads\/2025\/06\/hysteresis.jpg",883,603,false],"thumb-small":["https:\/\/optique-ingenieur.org\/wp-content\/uploads\/2025\/06\/hysteresis-80x80.jpg",80,80,true],"thumb-standard":["https:\/\/optique-ingenieur.org\/wp-content\/uploads\/2025\/06\/hysteresis-320x320.jpg",320,320,true],"thumb-medium":["https:\/\/optique-ingenieur.org\/wp-content\/uploads\/2025\/06\/hysteresis-520x245.jpg",520,245,true],"thumb-large":["https:\/\/optique-ingenieur.org\/wp-content\/uploads\/2025\/06\/hysteresis-720x340.jpg",720,340,true],"thumb-xlarge":["https:\/\/optique-ingenieur.org\/wp-content\/uploads\/2025\/06\/hysteresis-883x450.jpg",883,450,true],"thumb-xxlarge":["https:\/\/optique-ingenieur.org\/wp-content\/uploads\/2025\/06\/hysteresis-883x500.jpg",883,500,true]},"uagb_author_info":{"display_name":"admin","author_link":"https:\/\/optique-ingenieur.org\/?author=1"},"uagb_comment_info":0,"uagb_excerpt":"Auteur(s) : Jean-Hugh THOMAS \u2013 ENSIM &#8211; Le Mans Universit\u00e9 Contexte : Apr\u00e8s calcul du module du gradient, un seuillage par hyst\u00e9r\u00e9sis est employ\u00e9. L&rsquo;animation permet de montrer l&rsquo;int\u00e9r\u00eat de cette technique. L&rsquo;id\u00e9e est&#46;&#46;&#46;","_links":{"self":[{"href":"https:\/\/optique-ingenieur.org\/index.php?rest_route=\/wp\/v2\/posts\/853","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/optique-ingenieur.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/optique-ingenieur.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/optique-ingenieur.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/optique-ingenieur.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=853"}],"version-history":[{"count":2,"href":"https:\/\/optique-ingenieur.org\/index.php?rest_route=\/wp\/v2\/posts\/853\/revisions"}],"predecessor-version":[{"id":1020,"href":"https:\/\/optique-ingenieur.org\/index.php?rest_route=\/wp\/v2\/posts\/853\/revisions\/1020"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/optique-ingenieur.org\/index.php?rest_route=\/wp\/v2\/media\/1021"}],"wp:attachment":[{"href":"https:\/\/optique-ingenieur.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=853"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/optique-ingenieur.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=853"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/optique-ingenieur.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=853"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}