{"id":5816,"date":"2025-09-24T16:40:29","date_gmt":"2025-09-24T14:40:29","guid":{"rendered":"https:\/\/clandestritons.fr\/?p=5816"},"modified":"2025-09-24T16:50:42","modified_gmt":"2025-09-24T14:50:42","slug":"visite-virtuelle-3d-grotte-du-deroc-07","status":"publish","type":"post","link":"https:\/\/clandestritons.fr\/?p=5816","title":{"rendered":"Visite virtuelle 3D &#8211; Grotte du D\u00e9roc (07)"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Apr\u00e8s <a href=\"\/?p=2404\" target=\"_blank\" rel=\"noreferrer noopener\">un premier essai<\/a> en 2019 r\u00e9alis\u00e9 sur la base d&rsquo;un relev\u00e9 au distoX, la qualit\u00e9 du mod\u00e8le n&rsquo;\u00e9tait pas suffisante pour avoir un rendu repr\u00e9sentatif. Un test avec un mod\u00e8le haute d\u00e9finition \u00e9tait n\u00e9cessaire. Il faudra attendre 6 ans pour qu&rsquo;une occasion se pr\u00e9sente.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Les 17 et 18 mai 2025 nous avons organis\u00e9 un week-end <a href=\"\/?p=5431\" target=\"_blank\" rel=\"noreferrer noopener\">d&rsquo;\u00e9change sur le th\u00e8me de la topographie<\/a>, et Beno\u00eet en a profit\u00e9 pour nous faire une d\u00e9monstration de relev\u00e9 lidar des principales galeries de la grotte du D\u00e9roc (Vallon Pont d&rsquo;Arc &#8211; 07) pendant que le reste de l&rsquo;\u00e9quipe r\u00e9alisait un relev\u00e9 traditionnel au distoX.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Arm\u00e9 de son scanner Xgrids K1 et de quelques puissants phares, le relev\u00e9 est r\u00e9alis\u00e9 rapidement en parcourant simplement l&rsquo;ensemble des conduits de la grotte. L&rsquo;op\u00e9ration est simple dans le D\u00e9roc qui est tr\u00e8s horizontal. Il faut orienter le lidar dans l&rsquo;ensemble des directions \u00e0 scanner et particuli\u00e8rement sur quelques points topo de r\u00e9f\u00e9rence. En tout cas le scan est r\u00e9alis\u00e9 bien plus rapidement que le relev\u00e9 au distoX !<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">La post-production est un peu plus longue :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Assemblage et ajustement des coordonn\u00e9es sur la topo <a href=\"https:\/\/therion.speleo.sk\/download.php\" target=\"_blank\" rel=\"noreferrer noopener\">Therion <\/a>avec <a href=\"https:\/\/www.cloudcompare.org\/\" target=\"_blank\" rel=\"noreferrer noopener\">CloudCompare<\/a>,<\/li>\n\n\n\n<li>Simplification et d\u00e9coupe avec <a href=\"https:\/\/www.meshlab.net\/\">Meshlab <\/a>pour all\u00e9ger le mod\u00e8le.<\/li>\n\n\n\n<li>Int\u00e9gration dans l&rsquo;animation 3D r\u00e9alis\u00e9e avec <a href=\"https:\/\/unity.com\/\" target=\"_blank\" rel=\"noreferrer noopener\">Unity<\/a>.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">La version Windows \u00e0 d\u00e9zipper et installer est disponible <a href=\"\/Deroc\/Deroc_Virtual_3D_Win.zip\">ici<\/a>. La version web pour un usage directement en ligne est disponible <a href=\"\/Deroc\/\" target=\"_blank\" rel=\"noreferrer noopener\">l\u00e0<\/a> (la patience est une vertu ;-). Attention, le rendu peut \u00eatre lent sur certains terminaux.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large is-resized\"><img decoding=\"async\" width=\"1024\" height=\"574\" src=\"https:\/\/clandestritons.fr\/wp-content\/uploads\/2025\/09\/Capture-decran-2025-09-17-170122-1024x574.jpg\" alt=\"\" class=\"wp-image-5829\" style=\"width:652px;height:auto\" srcset=\"https:\/\/clandestritons.fr\/wp-content\/uploads\/2025\/09\/Capture-decran-2025-09-17-170122-1024x574.jpg 1024w, https:\/\/clandestritons.fr\/wp-content\/uploads\/2025\/09\/Capture-decran-2025-09-17-170122-300x168.jpg 300w, https:\/\/clandestritons.fr\/wp-content\/uploads\/2025\/09\/Capture-decran-2025-09-17-170122-768x430.jpg 768w, https:\/\/clandestritons.fr\/wp-content\/uploads\/2025\/09\/Capture-decran-2025-09-17-170122-1536x861.jpg 1536w, https:\/\/clandestritons.fr\/wp-content\/uploads\/2025\/09\/Capture-decran-2025-09-17-170122.jpg 1863w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Cot\u00e9 rendu les choses peuvent \u00eatres encore travaill\u00e9es : am\u00e9liorer l&rsquo;\u00e9clairage pour remplacer l&rsquo;effet lampe de poche par un effet \u00ab\u00a0Scurion\u00a0\u00bb;  am\u00e9liorer les d\u00e9tails sans trop p\u00e9naliser la taille du mod\u00e8le, avoir un rendu plus r\u00e9aliste des couleurs&#8230; <\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Apr\u00e8s un premier essai en 2019 r\u00e9alis\u00e9 sur la base d&rsquo;un relev\u00e9 au distoX, la qualit\u00e9 du mod\u00e8le n&rsquo;\u00e9tait pas suffisante pour avoir un rendu repr\u00e9sentatif. Un test avec un mod\u00e8le haute d\u00e9finition \u00e9tait n\u00e9cessaire. Il faudra attendre 6 ans pour qu&rsquo;une occasion se pr\u00e9sente. Les 17 et 18 mai 2025 nous avons organis\u00e9 un [&hellip;]<\/p>\n","protected":false},"author":8,"featured_media":5829,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[342,136,547],"tags":[287,572,570,68,563,573,575],"class_list":["post-5816","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-science","category-technique","category-topographie","tag-3d","tag-deroc","tag-lidar","tag-speleo","tag-therion","tag-topographie","tag-unity"],"_links":{"self":[{"href":"https:\/\/clandestritons.fr\/index.php?rest_route=\/wp\/v2\/posts\/5816","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/clandestritons.fr\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/clandestritons.fr\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/clandestritons.fr\/index.php?rest_route=\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/clandestritons.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=5816"}],"version-history":[{"count":18,"href":"https:\/\/clandestritons.fr\/index.php?rest_route=\/wp\/v2\/posts\/5816\/revisions"}],"predecessor-version":[{"id":5853,"href":"https:\/\/clandestritons.fr\/index.php?rest_route=\/wp\/v2\/posts\/5816\/revisions\/5853"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/clandestritons.fr\/index.php?rest_route=\/wp\/v2\/media\/5829"}],"wp:attachment":[{"href":"https:\/\/clandestritons.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=5816"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/clandestritons.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=5816"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/clandestritons.fr\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=5816"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}