{"id":33,"date":"2026-04-13T10:48:29","date_gmt":"2026-04-13T10:48:29","guid":{"rendered":"https:\/\/hasorimaging.com\/?page_id=33"},"modified":"2026-05-11T21:06:00","modified_gmt":"2026-05-11T21:06:00","slug":"la-technologie-rti","status":"publish","type":"page","link":"https:\/\/hasorimaging.com\/index.php\/la-technologie-rti\/","title":{"rendered":"Qu&rsquo;est-ce que la RTI"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"33\" class=\"elementor elementor-33\">\n\t\t\t\t<div class=\"elementor-element elementor-element-4243e401 e-flex e-con-boxed e-con e-parent\" data-id=\"4243e401\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t\t\t\t\n\t\t<img class=\"e-image-base e-699de90-3d02610\" \n\t\t\t\t\tdata-interaction-id=\"699de90\" \n\t\t \n\t\t \n\t\t\t\t\t\t\t\t\tid=\"213\"\n\t\t\t\t\t\t\t\t\t\t\t\tsrc=\"https:\/\/hasorimaging.com\/wp-content\/uploads\/2026\/04\/Meaudre-Bouhier_Fig2_Castel-Minier_72ppp-1024x294-1.jpg\"\n\t\t\t\t\t\t\t\t\t\t\t\twidth=\"1024\"\n\t\t\t\t\t\t\t\t\t\t\t\theight=\"294\"\n\t\t\t\t\t\t\t\t\t\t\t\tsrcset=\"https:\/\/hasorimaging.com\/wp-content\/uploads\/2026\/04\/Meaudre-Bouhier_Fig2_Castel-Minier_72ppp-1024x294-1.jpg 1024w, https:\/\/hasorimaging.com\/wp-content\/uploads\/2026\/04\/Meaudre-Bouhier_Fig2_Castel-Minier_72ppp-1024x294-1-300x86.jpg 300w, https:\/\/hasorimaging.com\/wp-content\/uploads\/2026\/04\/Meaudre-Bouhier_Fig2_Castel-Minier_72ppp-1024x294-1-768x221.jpg 768w\"\n\t\t\t\t\t\t\t\t\t\t\t\talt=\"\"\n\t\t\t\t\t\t\/>\n\t\t\t\t\t\t\t\t\n\t\t<img class=\"e-image-base e-a838843-1f08139\" \n\t\t\t\t\tdata-interaction-id=\"a838843\" \n\t\t \n\t\t \n\t\t\t\t\t\t\t\t\tid=\"212\"\n\t\t\t\t\t\t\t\t\t\t\t\tsrc=\"https:\/\/hasorimaging.com\/wp-content\/uploads\/2026\/04\/CM15_3111_44144_12695_droit_v3_500x323_256b.gif\"\n\t\t\t\t\t\t\t\t\t\t\t\twidth=\"500\"\n\t\t\t\t\t\t\t\t\t\t\t\theight=\"323\"\n\t\t\t\t\t\t\t\t\t\t\t\tsrcset=\"\"\n\t\t\t\t\t\t\t\t\t\t\t\talt=\"\"\n\t\t\t\t\t\t\/>\n\t\t\t\t\t<div class=\"elementor-element elementor-element-4f146c1d elementor-widget elementor-widget-text-editor\" data-id=\"4f146c1d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2 data-start=\"126\" data-end=\"486\">Introduction<\/h2>\n<p data-start=\"126\" data-end=\"486\">La <strong data-start=\"129\" data-end=\"173\">RTI (Reflectance Transformation Imaging)<\/strong>, ou <em data-start=\"178\" data-end=\"225\">imagerie par transformation de la r\u00e9flectance<\/em>, est une technique photographique avanc\u00e9e qui permet d\u2019analyser en d\u00e9tail la surface d\u2019un objet.<\/p>\n<p data-start=\"126\" data-end=\"486\">Elle se r\u00e9v\u00e8le tr\u00e8s utile dans les domaines notament:<\/p>\n<ul>\n<li data-start=\"126\" data-end=\"486\"><strong>Patrimoine<\/strong><\/li>\n<li data-start=\"126\" data-end=\"486\"><strong>Arch\u00e9ologie<\/strong><\/li>\n<li data-start=\"126\" data-end=\"486\"><strong>Numismatique<\/strong><\/li>\n<li data-start=\"126\" data-end=\"486\"><strong>Pal\u00e9ontologie<\/strong><\/li>\n<li data-start=\"126\" data-end=\"486\"><strong>Conservation d\u2019\u0153uvres d\u2019art<\/strong><\/li>\n<li data-start=\"126\" data-end=\"486\"><strong>Forensique<\/strong><\/li>\n<\/ul>\n<p data-start=\"488\" data-end=\"634\">Son objectif est simple : r\u00e9v\u00e9ler des d\u00e9tails invisibles \u00e0 l\u2019\u0153il nu en jouant sur la mani\u00e8re dont la lumi\u00e8re interagit avec la surface d\u2019un objet.<\/p>\n<h2>Le principe de fonctionnement<\/h2>\n<p data-start=\"675\" data-end=\"751\">La RTI exploite les jeux d&rsquo;ombres et de lumi\u00e8re <strong data-start=\"719\" data-end=\"750\">r\u00e9v\u00e9lant ainsi des differences de reliefs les plus infime<\/strong>.<\/p>\n<p data-start=\"675\" data-end=\"751\">Le mode op\u00e9ratoire d&rsquo;une acquisition RTI est le suivant:<\/p>\n<ol>\n<li>Un objet est positionn\u00e9 devant un appareil photo fixe.<\/li>\n<li>Plusieurs dizaines de photographies sont prises depuis le m\u00eame point de vue.<\/li>\n<li>\u00c0 chaque prise de vue, seule la position d&rsquo;une source lumineuse eclairant l&rsquo;objet change.<\/li>\n<\/ol>\n<p data-start=\"965\" data-end=\"1083\">On obtient ainsi une s\u00e9rie d\u2019images mettant en \u00e9vidence les reliefs de l&rsquo;objet sous different angle d&rsquo;incidence de la lumi\u00e8re.<\/p>\n<p data-start=\"1085\" data-end=\"1214\">Un logiciel sp\u00e9cialis\u00e9 analyse ensuite ces variations de r\u00e9flectance pour cr\u00e9er un fichier interactif. L\u2019utilisateur peut maintenant analyser et partager ce fichierdans lequel il est possible de :<\/p>\n<ul data-start=\"1216\" data-end=\"1377\">\n<li data-section-id=\"i6gonv\" data-start=\"1216\" data-end=\"1261\">D\u00e9placer virtuellement la source lumineuse<\/li>\n<li data-section-id=\"k7qxja\" data-start=\"1262\" data-end=\"1285\">Accentuer les ombres<\/li>\n<li data-section-id=\"1phywn1\" data-start=\"1286\" data-end=\"1316\">Renforcer les micro-reliefs<\/li>\n<li data-section-id=\"1b58lln\" data-start=\"1317\" data-end=\"1377\">R\u00e9v\u00e9ler des gravures, inscriptions ou textures tr\u00e8s fines<\/li>\n<\/ul>\n<h2 data-section-id=\"10qgsh7\" data-start=\"1384\" data-end=\"1413\">Pourquoi utiliser la RTI ?<\/h2>\n<p data-start=\"1415\" data-end=\"1433\">La RTI permet de :<\/p>\n<ul data-start=\"1435\" data-end=\"1651\">\n<li data-section-id=\"c78oi7\" data-start=\"1435\" data-end=\"1494\">Mettre en \u00e9vidence des inscriptions effac\u00e9es ou \u00e9rod\u00e9es<\/li>\n<li data-section-id=\"1ivkwix\" data-start=\"1495\" data-end=\"1545\">Analyser des traces d\u2019outils ou de fabrication<\/li>\n<li data-section-id=\"5qrufx\" data-start=\"1546\" data-end=\"1594\">\u00c9tudier l\u2019\u00e9tat de conservation d\u2019une surface<\/li>\n<li data-section-id=\"19fywpf\" data-start=\"1595\" data-end=\"1651\">Documenter des objets fragiles sans contact physique<\/li>\n<li data-section-id=\"19fywpf\" data-start=\"1595\" data-end=\"1651\">Partager une documentation avec les sp\u00e9cialistes\u00a0<\/li>\n<\/ul>\n<p>\u00a0<\/p>\n<p data-start=\"1653\" data-end=\"1791\">Contrairement \u00e0 un simple \u00e9clairage rasant, la RTI offre une <strong data-start=\"1714\" data-end=\"1752\">analyse dynamique et reproductible<\/strong>, sans manipulation directe de l\u2019objet.<\/p>\n<p data-start=\"1653\" data-end=\"1791\">La construction d&rsquo;un fichier RTI est aussi beaucoup moins chronophage et gourmant en ressources informatiques que la photogramm\u00e9trie ou le scan 3D. Contrairement \u00e0 ces deux techniques, la RTI peut \u00eatre mise en \u0153uvre tr\u00e8s simplement par un <strong>utilisateur non-expert<\/strong>, notamment gr\u00e2ce \u00e0 nos outils d&rsquo;acquisition ergonomiques et automatis\u00e9s. Enfin la RTI g\u00e9n\u00e8re des fichiers de faible poids, compatibles avec de simples envoies par mail ou une visualisation dynamique sur une page web.<\/p>\n<p><!-- \/wp:paragraph --><!-- wp:paragraph --><!-- \/wp:paragraph --><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-53f0fd4 elementor-widget elementor-widget-text-editor\" data-id=\"53f0fd4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>\u00a0<\/p><p><a href=\"https:\/\/culturalheritageimaging.org\/What_We_Offer\/Downloads\/Process\/index.html\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">https:\/\/culturalheritageimaging.org\/What_We_Offer\/Downloads\/Process\/index.html<\/a>\u00a0<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Introduction La RTI (Reflectance Transformation Imaging), ou imagerie par transformation de la r\u00e9flectance, est une technique photographique avanc\u00e9e qui permet d\u2019analyser en d\u00e9tail la surface d\u2019un objet. Elle se r\u00e9v\u00e8le tr\u00e8s utile dans les domaines notament: Patrimoine Arch\u00e9ologie Numismatique Pal\u00e9ontologie Conservation d\u2019\u0153uvres d\u2019art Forensique Son objectif est simple : r\u00e9v\u00e9ler des d\u00e9tails invisibles \u00e0 l\u2019\u0153il [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":32,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-33","page","type-page","status-publish","has-post-thumbnail","hentry"],"_links":{"self":[{"href":"https:\/\/hasorimaging.com\/index.php\/wp-json\/wp\/v2\/pages\/33","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hasorimaging.com\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/hasorimaging.com\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/hasorimaging.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/hasorimaging.com\/index.php\/wp-json\/wp\/v2\/comments?post=33"}],"version-history":[{"count":13,"href":"https:\/\/hasorimaging.com\/index.php\/wp-json\/wp\/v2\/pages\/33\/revisions"}],"predecessor-version":[{"id":300,"href":"https:\/\/hasorimaging.com\/index.php\/wp-json\/wp\/v2\/pages\/33\/revisions\/300"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hasorimaging.com\/index.php\/wp-json\/wp\/v2\/media\/32"}],"wp:attachment":[{"href":"https:\/\/hasorimaging.com\/index.php\/wp-json\/wp\/v2\/media?parent=33"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}