{"id":440,"date":"2018-07-23T09:59:00","date_gmt":"2018-07-23T07:59:00","guid":{"rendered":"https:\/\/blogs.autodesk.com\/villagebim\/2018\/07\/autodesk-recap-photo-coordonnees-gps-et-gcp.html"},"modified":"2018-07-23T09:59:00","modified_gmt":"2018-07-23T07:59:00","slug":"autodesk-recap-photo-coordonnees-gps-et-gcp","status":"publish","type":"post","link":"https:\/\/blogs.autodesk.com\/villagebim\/2018\/07\/autodesk-recap-photo-coordonnees-gps-et-gcp.html","title":{"rendered":"Autodesk ReCap Photo : Coordonn\u00e9es GPS et GCP"},"content":{"rendered":"<p><a href=\"http:\/\/villagebim.typepad.com\/.a\/6a015391e15a28970b022ad37e5129200d-pi\"><img loading=\"lazy\" decoding=\"async\" alt=\"clip_image002\" border=\"0\" height=\"249\" src=\"https:\/\/villagebim.typepad.com\/.a\/6a015391e15a28970b022ad3585d8d200c-pi\" style=\"background-image: none;margin-left: auto;margin-right: auto\" title=\"clip_image002\" width=\"454\" \/><\/a><\/p>\n<p>&#160;&#160;&#160;&#160;Lorsque l\u2019on utilise la technologie de la photogramm\u00e9trie, il est tr\u00e8s pratique de g\u00e9olocaliser le mod\u00e8le maill\u00e9 afin que celui-ci apparaisse au bon endroit sur le surface du globe.<\/p>\n<p style=\"text-align: justify\">&#160;&#160;&#160;&#160;Saviez-vous que le logiciel de photogramm\u00e9trie <a href=\"https:\/\/www.autodesk.com\/products\/recap\/overview\">Autodesk Recap Photo<\/a> permet de prendre en compte les coordonn\u00e9es GPS encapsul\u00e9s en m\u00e9tadonn\u00e9es dans vos photos. Il faut pour cela que l\u2019appareil photo dispose d\u2019un dispositif de capture de positionnement GPS lors de campagnes de relev\u00e9s.<\/p>\n<p style=\"text-align: justify\">&#160;&#160;&#160;&#160;Certains dispositifs de positionnement GPS peuvent \u00eatre tr\u00e8s co\u00fbteux suivant la pr\u00e9cision que vous voulez obtenir, c\u2019est pour une de ces raisons que le logiciel <a href=\"https:\/\/www.autodesk.com\/products\/recap\/overview\">Autodesk Recap Photo<\/a> autorise la rentr\u00e9e de GCP.<\/p>\n<p style=\"text-align: justify\">&#160;&#160;&#160;&#160;Quid GCP ? Il s\u2019agit d\u2019un acronyme anglo-saxon, \u00ab <strong>G<\/strong>round <strong>C<\/strong>ontrol <strong>P<\/strong>oint \u00bb, soit dans langue de Moli\u00e8re : \u00ab Points de Contr\u00f4le au Sol \u00bb. Les GCP am\u00e9liorent grandement la pr\u00e9cision globale de votre mod\u00e8le issue de drone. C&#039;est-\u00e0-dire qu\u2019ils aident \u00e0 s\u2019assurer que la latitude et la longitude de n&#039;importe quel point sur votre mod\u00e8le correspondent exactement aux coordonn\u00e9es GPS r\u00e9elles.<\/p>\n<p style=\"text-align: justify\">&#160;&#160;&#160;&#160;Sur le terrain, ces GCP sont plac\u00e9s strat\u00e9giquement dans la zone \u00e9tudi\u00e9e. Ils peuvent \u00eatre mat\u00e9rialis\u00e9s par des marques aux sols (exemple : intersections de ligne de terrain de football), par des cibles artificielles (exemple : rectangulaire avec des zones noires et blanches) dont les coordonn\u00e9es GPS sont connues pr\u00e9cis\u00e9ment. Les cibles GCP doivent \u00eatre imp\u00e9rativement et clairement identifiables sur les photos afin de pouvoir les pointer \u00e0 la souris et elles doivent \u00eatre g\u00e9or\u00e9f\u00e9renc\u00e9es.<\/p>\n<p><a href=\"http:\/\/villagebim.typepad.com\/.a\/6a015391e15a28970b022ad3585d91200c-pi\"><img loading=\"lazy\" decoding=\"async\" alt=\"clip_image003\" border=\"0\" height=\"147\" src=\"https:\/\/villagebim.typepad.com\/.a\/6a015391e15a28970b022ad3585d96200c-pi\" style=\"background-image: none;margin-left: auto;margin-right: auto\" title=\"clip_image003\" width=\"454\" \/><\/a><\/p>\n<p style=\"text-align: justify\">Voici le mode op\u00e9ratoire dans le logiciel <a href=\"https:\/\/www.autodesk.com\/products\/recap\/overview\">Autodesk Recap Photo<\/a> pour utiliser les points GCP :<\/p>\n<p style=\"text-align: justify\">&#8211; cliquez sur le bouton \u00ab <em>Aerial<\/em> \u00bb de l\u2019espace d\u2019accueil du logiciel,<\/p>\n<p><a href=\"http:\/\/villagebim.typepad.com\/.a\/6a015391e15a28970b022ad39e33b8200b-pi\"><img loading=\"lazy\" decoding=\"async\" alt=\"clip_image004\" border=\"0\" height=\"280\" src=\"https:\/\/villagebim.typepad.com\/.a\/6a015391e15a28970b022ad39e33be200b-pi\" style=\"background-image: none;margin-left: auto;margin-right: auto\" title=\"clip_image004\" width=\"454\" \/><\/a><\/p>\n<p style=\"text-align: justify\">&#8211; Chargez vos photos en cliquant sur le bouton au milieu de l\u2019\u00e9cran,<\/p>\n<p><a href=\"http:\/\/villagebim.typepad.com\/.a\/6a015391e15a28970b022ad3585d9a200c-pi\"><img loading=\"lazy\" decoding=\"async\" alt=\"clip_image006\" border=\"0\" height=\"248\" src=\"https:\/\/villagebim.typepad.com\/.a\/6a015391e15a28970b022ad39e33c2200b-pi\" style=\"background-image: none;margin-left: auto;margin-right: auto\" title=\"clip_image006\" width=\"454\" \/><\/a><\/p>\n<p style=\"text-align: justify\">&#8211; Une fois charg\u00e9es, le logiciel vous indique l\u2019absence de coordonn\u00e9e GPS dans les photos ; cliquez sur le bouton \u00ab <em>Continue<\/em> \u00bb,<\/p>\n<p><a href=\"http:\/\/villagebim.typepad.com\/.a\/6a015391e15a28970b022ad37e512d200d-pi\"><img loading=\"lazy\" decoding=\"async\" alt=\"clip_image007\" border=\"0\" height=\"212\" src=\"https:\/\/villagebim.typepad.com\/.a\/6a015391e15a28970b022ad37e5131200d-pi\" style=\"background-image: none;margin-left: auto;margin-right: auto\" title=\"clip_image007\" width=\"454\" \/><\/a><\/p>\n<p style=\"text-align: justify\">&#8211; Sur la partie gauche de l\u2019\u00e9cran, cliquez sur le bouton \u00ab <em>GCP<\/em> \u00bb,<\/p>\n<p><a href=\"http:\/\/villagebim.typepad.com\/.a\/6a015391e15a28970b022ad37e5135200d-pi\"><img loading=\"lazy\" decoding=\"async\" alt=\"clip_image008\" border=\"0\" height=\"297\" src=\"https:\/\/villagebim.typepad.com\/.a\/6a015391e15a28970b022ad3585da3200c-pi\" style=\"background-image: none;margin-left: auto;margin-right: auto\" title=\"clip_image008\" width=\"454\" \/><\/a><\/p>\n<p style=\"text-align: justify\">&#8211; La fen\u00eatre ci-dessous vous permet de cr\u00e9er les GCP,<\/p>\n<p><a href=\"http:\/\/villagebim.typepad.com\/.a\/6a015391e15a28970b022ad37e5139200d-pi\"><img loading=\"lazy\" decoding=\"async\" alt=\"clip_image010\" border=\"0\" height=\"251\" src=\"https:\/\/villagebim.typepad.com\/.a\/6a015391e15a28970b022ad39e33c9200b-pi\" style=\"background-image: none;margin-left: auto;margin-right: auto\" title=\"clip_image010\" width=\"454\" \/><\/a><\/p>\n<p style=\"text-align: justify\">&#8211; Cliquez sur le bouton \u00ab <em>Add Row<\/em> \u00bb :<\/p>\n<ul>\n<li>rentrez les coordonn\u00e9es du premier GCP (Longitude, Latitude et Altitude),<\/li>\n<\/ul>\n<p><a href=\"http:\/\/villagebim.typepad.com\/.a\/6a015391e15a28970b022ad3585da7200c-pi\"><img loading=\"lazy\" decoding=\"async\" alt=\"clip_image011\" border=\"0\" height=\"137\" src=\"https:\/\/villagebim.typepad.com\/.a\/6a015391e15a28970b022ad39e33cd200b-pi\" style=\"background-image: none;margin-left: auto;margin-right: auto\" title=\"clip_image011\" width=\"454\" \/><\/a><\/p>\n<p style=\"text-align: justify\">Nota : il est possible de copier\/coller les coordonn\u00e9es GPS des GCP \u00e0 partir de fichiers :<\/p>\n<p style=\"text-align: justify\">&#160; &#160; &#160; &#160; &#8211; texte (.txt),<\/p>\n<p style=\"text-align: justify\">&#160; &#160; &#160; &#160; &#8211; tableur (.csv ; .xls),<\/p>\n<p style=\"text-align: justify\">Voir l\u2019exemple ci-dessous :<\/p>\n<p><a href=\"http:\/\/villagebim.typepad.com\/.a\/6a015391e15a28970b022ad37e513f200d-pi\"><img loading=\"lazy\" decoding=\"async\" alt=\"clip_image012\" border=\"0\" height=\"511\" src=\"https:\/\/villagebim.typepad.com\/.a\/6a015391e15a28970b022ad37e5144200d-pi\" style=\"background-image: none;margin-left: auto;margin-right: auto\" title=\"clip_image012\" width=\"454\" \/><\/a><\/p>\n<ul>\n<li>en ayant toujours la ligne s\u00e9lectionn\u00e9e, cliquez sur une des photos pour indiquer le premier GCP (possibilit\u00e9 de zoomer et de d\u00e9placer la cible) puis cliquez sur bouton \u00ab <em>Done<\/em> \u00bb,<\/li>\n<\/ul>\n<p><a href=\"http:\/\/villagebim.typepad.com\/.a\/6a015391e15a28970b022ad3585dac200c-pi\"><img loading=\"lazy\" decoding=\"async\" alt=\"clip_image014\" border=\"0\" height=\"337\" src=\"https:\/\/villagebim.typepad.com\/.a\/6a015391e15a28970b022ad37e5148200d-pi\" style=\"background-image: none;margin-left: auto;margin-right: auto\" title=\"clip_image014\" width=\"454\" \/><\/a><\/p>\n<ul>\n<li>cliquez sur le bouton bleu vous signifiant qu\u2019il faut indiquer sur trois autres images le m\u00eame point (en cons\u00e9quence pour d\u00e9finir pr\u00e9cis\u00e9ment un point GCP, il faut l\u2019identifier sur 4 photos)<\/li>\n<\/ul>\n<p><a href=\"http:\/\/villagebim.typepad.com\/.a\/6a015391e15a28970b022ad37e514c200d-pi\"><img loading=\"lazy\" decoding=\"async\" alt=\"clip_image015\" border=\"0\" height=\"202\" src=\"https:\/\/villagebim.typepad.com\/.a\/6a015391e15a28970b022ad37e5150200d-pi\" style=\"background-image: none;margin-left: auto;margin-right: auto\" title=\"clip_image015\" width=\"454\" \/><\/a><\/p>\n<p style=\"text-align: justify\">&#8211; Une fois que vous avez sp\u00e9cifi\u00e9 le m\u00eame point sur quatre images, vous devez obtenir l\u2019image ci-dessous :<\/p>\n<p><a href=\"http:\/\/villagebim.typepad.com\/.a\/6a015391e15a28970b022ad3585db1200c-pi\"><img loading=\"lazy\" decoding=\"async\" alt=\"clip_image017\" border=\"0\" height=\"76\" src=\"https:\/\/villagebim.typepad.com\/.a\/6a015391e15a28970b022ad3585db5200c-pi\" style=\"background-image: none;margin-left: auto;margin-right: auto\" title=\"clip_image017\" width=\"454\" \/><\/a><\/p>\n<p style=\"text-align: justify\">&#8211; Pour r\u00e9f\u00e9rencer correctement votre mod\u00e8le, il faut au minimum 3 GCP (plus c\u2019est mieux), soit l\u2019image ci-dessous :<\/p>\n<p><a href=\"http:\/\/villagebim.typepad.com\/.a\/6a015391e15a28970b022ad3585db9200c-pi\"><img loading=\"lazy\" decoding=\"async\" alt=\"clip_image018\" border=\"0\" height=\"195\" src=\"https:\/\/villagebim.typepad.com\/.a\/6a015391e15a28970b022ad3585dbd200c-pi\" style=\"background-image: none;margin-left: auto;margin-right: auto\" title=\"clip_image018\" width=\"454\" \/><\/a><\/p>\n<p style=\"text-align: justify\">Nota : si vous activez la case \u00e0 coche \u00ab <em>Checkpoint<\/em> \u00bb, cela veut dire que ce point servira pour mesurer la diff\u00e9rence entre ce point et le point virtuel correspondant \u00e0 votre mod\u00e8le 3D.<\/p>\n<p style=\"text-align: justify\">&#8211; Avant de cliquer sur le bouton \u00ab <em>Done<\/em> \u00bb, d\u00e9finissez le syst\u00e8me de coordonn\u00e9es en cliquant sur les trois petits points :<\/p>\n<p><a href=\"http:\/\/villagebim.typepad.com\/.a\/6a015391e15a28970b022ad3585dc1200c-pi\"><img loading=\"lazy\" decoding=\"async\" alt=\"clip_image019\" border=\"0\" height=\"507\" src=\"https:\/\/villagebim.typepad.com\/.a\/6a015391e15a28970b022ad3585dc5200c-pi\" style=\"background-image: none;margin-left: auto;margin-right: auto\" title=\"clip_image019\" width=\"454\" \/><\/a><\/p>\n<p style=\"text-align: justify\">&#8211; De retour \u00e0 la fen\u00eatre principale, cliquez sur le bouton \u00ab <em>Create<\/em> \u00bb :<\/p>\n<p><a href=\"http:\/\/villagebim.typepad.com\/.a\/6a015391e15a28970b022ad37e515a200d-pi\"><img loading=\"lazy\" decoding=\"async\" alt=\"clip_image021\" border=\"0\" height=\"247\" src=\"https:\/\/villagebim.typepad.com\/.a\/6a015391e15a28970b022ad39e33d1200b-pi\" style=\"background-image: none;margin-left: auto;margin-right: auto\" title=\"clip_image021\" width=\"454\" \/><\/a><\/p>\n<p style=\"text-align: justify\">&#8211; Enfin d\u00e9finissez :<\/p>\n<ul>\n<li>Le nom du projet,<\/li>\n<li>Les types de format du r\u00e9sultat (RCM = format <a href=\"https:\/\/www.autodesk.com\/products\/recap\/overview\">ReCap Photo<\/a> \u2013 maillage ; RCS = Format ReCap PRO \u2013 nuage de points),<\/li>\n<li>Ortho photo et carte d\u2019\u00e9l\u00e9vation (GeoTiff &#8211; m\u00e9tadonn\u00e9es de g\u00e9or\u00e9f\u00e9rencement),<\/li>\n<\/ul>\n<p><a href=\"http:\/\/villagebim.typepad.com\/.a\/6a015391e15a28970b022ad3585dcb200c-pi\"><img loading=\"lazy\" decoding=\"async\" alt=\"clip_image023\" border=\"0\" height=\"535\" src=\"https:\/\/villagebim.typepad.com\/.a\/6a015391e15a28970b022ad3585dcf200c-pi\" style=\"background-image: none;margin-left: auto;margin-right: auto\" title=\"clip_image023\" width=\"454\" \/><\/a><\/p>\n<p style=\"text-align: justify\">&#8211; Cliquez sur le bouton \u00ab Start \u00bb.<\/p>\n<p style=\"text-align: justify\">Ensuite trois \u00e9tapes se succ\u00e8dent, visible depuis l\u2019espace d\u2019accueil du logiciel :<\/p>\n<p style=\"text-align: justify\">&#8211; \u00ab <em>Upload<\/em> \u00bb des photos sur le cloud,<\/p>\n<p><a href=\"http:\/\/villagebim.typepad.com\/.a\/6a015391e15a28970b022ad3585dd3200c-pi\"><img loading=\"lazy\" decoding=\"async\" alt=\"clip_image024\" border=\"0\" height=\"161\" src=\"https:\/\/villagebim.typepad.com\/.a\/6a015391e15a28970b022ad3585dd7200c-pi\" style=\"background-image: none;margin-left: auto;margin-right: auto\" title=\"clip_image024\" width=\"454\" \/><\/a><\/p>\n<p style=\"text-align: justify\">&#8211; R\u00e9alisation du calcul dans le cloud,<\/p>\n<p><a href=\"http:\/\/villagebim.typepad.com\/.a\/6a015391e15a28970b022ad39e33d6200b-pi\"><img loading=\"lazy\" decoding=\"async\" alt=\"clip_image025\" border=\"0\" height=\"175\" src=\"https:\/\/villagebim.typepad.com\/.a\/6a015391e15a28970b022ad39e33db200b-pi\" style=\"background-image: none;margin-left: auto;margin-right: auto\" title=\"clip_image025\" width=\"454\" \/><\/a><\/p>\n<p style=\"text-align: justify\">&#8211; T\u00e9l\u00e9chargement du r\u00e9sultat :<\/p>\n<p><a href=\"http:\/\/villagebim.typepad.com\/.a\/6a015391e15a28970b022ad37e5160200d-pi\"><img loading=\"lazy\" decoding=\"async\" alt=\"clip_image026\" border=\"0\" height=\"177\" src=\"https:\/\/villagebim.typepad.com\/.a\/6a015391e15a28970b022ad37e5164200d-pi\" style=\"background-image: none;margin-left: auto;margin-right: auto\" title=\"clip_image026\" width=\"454\" \/><\/a><\/p>\n<p style=\"text-align: justify\">Une fois t\u00e9l\u00e9charg\u00e9, vous pouvez visualiser le mod\u00e8le en cliquant sur le vignette du projet.<\/p>\n<p><a href=\"http:\/\/villagebim.typepad.com\/.a\/6a015391e15a28970b022ad3585ddb200c-pi\"><img loading=\"lazy\" decoding=\"async\" alt=\"clip_image028\" border=\"0\" height=\"250\" src=\"https:\/\/villagebim.typepad.com\/.a\/6a015391e15a28970b022ad37e5168200d-pi\" style=\"background-image: none;margin-left: auto;margin-right: auto\" title=\"clip_image028\" width=\"454\" \/><\/a><\/p>\n<p style=\"text-align: justify\">&#160;&#160;&#160;&#160;Il ne reste plus qu\u2019\u00e0 nettoyer le mod\u00e8le (suppression des \u00e9l\u00e9ments hors contexte, remplissage des trous, suppression de particules\u2026).<\/p>\n<p style=\"text-align: justify\">De la m\u00eame mani\u00e8re, vous pouvez ouvrir le nuage de points dans le logiciel <a href=\"https:\/\/www.autodesk.com\/products\/recap\/overview\">Autodesk ReCap Pro<\/a> (si vous avez demand\u00e9 la g\u00e9n\u00e9ration du fichier format RCS).<\/p>\n<p><a href=\"http:\/\/villagebim.typepad.com\/.a\/6a015391e15a28970b022ad3585ddf200c-pi\"><img loading=\"lazy\" decoding=\"async\" alt=\"clip_image030\" border=\"0\" height=\"252\" src=\"https:\/\/villagebim.typepad.com\/.a\/6a015391e15a28970b022ad3585de3200c-pi\" style=\"background-image: none;margin-left: auto;margin-right: auto\" title=\"clip_image030\" width=\"454\" \/><\/a><\/p>\n<p style=\"text-align: justify\">&#160;&#160;&#160;&#160;Vous pouvez importer le projet g\u00e9or\u00e9f\u00e9renc\u00e9 dans diff\u00e9rents logiciels du <a href=\"https:\/\/www.autodesk.fr\/collections\/architecture-engineering-construction\/overview\">portfolio Autodesk<\/a>. Il viendra se placer automatiquement au bon emplacement comme le montre l\u2019image ci-dessous dans le logiciel <a href=\"https:\/\/www.autodesk.fr\/products\/infraworks\/overview\">Autodesk Infraworks<\/a>.<\/p>\n<p><a href=\"http:\/\/villagebim.typepad.com\/.a\/6a015391e15a28970b022ad39e33e0200b-pi\"><img loading=\"lazy\" decoding=\"async\" alt=\"clip_image032\" border=\"0\" height=\"251\" src=\"https:\/\/villagebim.typepad.com\/.a\/6a015391e15a28970b022ad3585de7200c-pi\" style=\"background-image: none;margin-left: auto;margin-right: auto\" title=\"clip_image032\" width=\"454\" \/><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>&#160;&#160;&#160;&#160;Lorsque l\u2019on utilise la technologie de la photogramm\u00e9trie, il est tr\u00e8s pratique de g\u00e9olocaliser le mod\u00e8le maill\u00e9 afin que celui-ci apparaisse au bon endroit sur le surface du globe. &#160;&#160;&#160;&#160;Saviez-vous que le logiciel de photogramm\u00e9trie Autodesk Recap Photo permet de prendre en compte les coordonn\u00e9es GPS encapsul\u00e9s en m\u00e9tadonn\u00e9es dans vos photos. Il faut pour [&hellip;]<\/p>\n","protected":false},"author":13092,"featured_media":2472,"menu_order":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[5,6,19],"tags":[20,44,158,585],"class_list":["post-440","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-bim","category-trucs-et-astuces","category-visualisation","tag-autodesk","tag-bim","tag-georeferencement","tag-recap-photo","dhig-theme--light"],"acf":[],"_links":{"self":[{"href":"https:\/\/blogs.autodesk.com\/villagebim\/wp-json\/wp\/v2\/posts\/440","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blogs.autodesk.com\/villagebim\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blogs.autodesk.com\/villagebim\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blogs.autodesk.com\/villagebim\/wp-json\/wp\/v2\/users\/13092"}],"replies":[{"embeddable":true,"href":"https:\/\/blogs.autodesk.com\/villagebim\/wp-json\/wp\/v2\/comments?post=440"}],"version-history":[{"count":0,"href":"https:\/\/blogs.autodesk.com\/villagebim\/wp-json\/wp\/v2\/posts\/440\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blogs.autodesk.com\/villagebim\/wp-json\/wp\/v2\/media\/2472"}],"wp:attachment":[{"href":"https:\/\/blogs.autodesk.com\/villagebim\/wp-json\/wp\/v2\/media?parent=440"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.autodesk.com\/villagebim\/wp-json\/wp\/v2\/categories?post=440"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.autodesk.com\/villagebim\/wp-json\/wp\/v2\/tags?post=440"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}