{"id":214,"date":"2024-06-25T14:09:59","date_gmt":"2024-06-25T12:09:59","guid":{"rendered":"https:\/\/opi-test.univ-lemans.fr\/?p=214"},"modified":"2025-07-07T13:19:39","modified_gmt":"2025-07-07T11:19:39","slug":"214","status":"publish","type":"post","link":"https:\/\/optique-ingenieur.org\/?p=214","title":{"rendered":"Seuillage par histogramme"},"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;\">Le module du gradient de l&rsquo;image a \u00e9t\u00e9 calcul\u00e9 par filtrage de Sobel. Il s&rsquo;agit ensuite de ne garder que les contours les plus significatifs en recourant \u00e0 la technique de seuillage par histogramme. Plusieurs seuils sont possibles : un seuil \u00e0 90 % signifie que seulement 10 % des contours les plus significatifs sont conserv\u00e9s. L&rsquo;animation permet de montrer l&rsquo;influence du seuil sur la qualit\u00e9 des contours obtenus (en cliquant sur les points rouges dans l&rsquo;histogramme cumul\u00e9 en bas \u00e0 gauche).<\/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\n<iframe loading=\"lazy\" src=\"\/modules\/animations\/OPI_anim_M02C02A01_JHT.html\" width=\"900\" height=\"700\" allow=\"fullscreen\"><\/iframe>\n","protected":false},"excerpt":{"rendered":"<p>Auteur(s) : Jean-Hugh Thomas \u2013 ENSIM &#8211; Le Mans Universit\u00e9 Contexte : Le module du gradient de l&rsquo;image a \u00e9t\u00e9 calcul\u00e9 par filtrage de Sobel. Il s&rsquo;agit ensuite de ne garder que les contours&#46;&#46;&#46;<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_uag_custom_page_level_css":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-214","post","type-post","status-publish","format-standard","hentry","category-animations"],"uagb_featured_image_src":{"full":false,"thumbnail":false,"medium":false,"medium_large":false,"large":false,"1536x1536":false,"2048x2048":false,"thumb-small":false,"thumb-standard":false,"thumb-medium":false,"thumb-large":false,"thumb-xlarge":false,"thumb-xxlarge":false},"uagb_author_info":{"display_name":"Jeremy BUARD","author_link":"https:\/\/optique-ingenieur.org\/?author=3"},"uagb_comment_info":0,"uagb_excerpt":"Auteur(s) : Jean-Hugh Thomas \u2013 ENSIM &#8211; Le Mans Universit\u00e9 Contexte : Le module du gradient de l&rsquo;image a \u00e9t\u00e9 calcul\u00e9 par filtrage de Sobel. Il s&rsquo;agit ensuite de ne garder que les contours&#46;&#46;&#46;","_links":{"self":[{"href":"https:\/\/optique-ingenieur.org\/index.php?rest_route=\/wp\/v2\/posts\/214","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\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/optique-ingenieur.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=214"}],"version-history":[{"count":16,"href":"https:\/\/optique-ingenieur.org\/index.php?rest_route=\/wp\/v2\/posts\/214\/revisions"}],"predecessor-version":[{"id":1423,"href":"https:\/\/optique-ingenieur.org\/index.php?rest_route=\/wp\/v2\/posts\/214\/revisions\/1423"}],"wp:attachment":[{"href":"https:\/\/optique-ingenieur.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=214"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/optique-ingenieur.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=214"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/optique-ingenieur.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=214"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}