{"id":1611,"date":"2012-04-09T10:52:41","date_gmt":"2012-04-09T09:52:41","guid":{"rendered":"http:\/\/www.keris-studio.fr\/blog\/?p=1611"},"modified":"2014-11-23T10:49:34","modified_gmt":"2014-11-23T09:49:34","slug":"la-joselire-relev-photosynth","status":"publish","type":"post","link":"https:\/\/www.keris-studio.fr\/blog\/?p=1611","title":{"rendered":"3D-photo &#8211; La Joseli\u00e8re, relev\u00e9 Photosynth"},"content":{"rendered":"<p><a href=\"https:\/\/www.keris-studio.fr\/blog\/wp-content\/image229.png\"><img loading=\"lazy\" decoding=\"async\" style=\"background-image: none; border-bottom: 0px; border-left: 0px; margin: 0px; padding-left: 0px; padding-right: 0px; display: inline; border-top: 0px; border-right: 0px; padding-top: 0px\" title=\"image\" border=\"0\" alt=\"image\" src=\"https:\/\/www.keris-studio.fr\/blog\/wp-content\/image_thumb227.png\" width=\"642\" height=\"349\" \/><\/a><\/p>\n<p>Photosynth a \u00e9t\u00e9 utilis\u00e9 pour faire le relev\u00e9 de la Joseli\u00e8re. Une collection de 121 photographies pour une corr\u00e9lation de 100 % a \u00e9t\u00e9 engag\u00e9e.<a href=\"https:\/\/www.keris-studio.fr\/blog\/wp-content\/image230.png\"><img loading=\"lazy\" decoding=\"async\" style=\"background-image: none; border-bottom: 0px; border-left: 0px; margin: 0px; padding-left: 0px; padding-right: 0px; display: inline; border-top: 0px; border-right: 0px; padding-top: 0px\" title=\"image\" border=\"0\" alt=\"image\" src=\"https:\/\/www.keris-studio.fr\/blog\/wp-content\/image_thumb228.png\" width=\"642\" height=\"209\" \/><\/a><\/p>\n<p>Le temps couvert \u00e9tait id\u00e9al pour obtenir une lumi\u00e8re uniforme et diffuse, toutefois, la tr\u00e8s faible luminosit\u00e9 a donn\u00e9 des contrastes (\u00e9quivalent occlusions ambiantes) tr\u00e8s faibles.<\/p>\n<p><a href=\"https:\/\/www.keris-studio.fr\/blog\/wp-content\/image231.png\"><img loading=\"lazy\" decoding=\"async\" style=\"background-image: none; border-bottom: 0px; border-left: 0px; margin: 0px; padding-left: 0px; padding-right: 0px; display: inline; border-top: 0px; border-right: 0px; padding-top: 0px\" title=\"image\" border=\"0\" alt=\"image\" src=\"https:\/\/www.keris-studio.fr\/blog\/wp-content\/image_thumb229.png\" width=\"642\" height=\"212\" \/><\/a><\/p>\n<p>Le nuage de points :<a href=\"https:\/\/www.keris-studio.fr\/blog\/wp-content\/image232.png\"><img loading=\"lazy\" decoding=\"async\" style=\"background-image: none; border-bottom: 0px; border-left: 0px; padding-left: 0px; padding-right: 0px; display: inline; border-top: 0px; border-right: 0px; padding-top: 0px\" title=\"image\" border=\"0\" alt=\"image\" src=\"https:\/\/www.keris-studio.fr\/blog\/wp-content\/image_thumb230.png\" width=\"642\" height=\"191\" \/><\/a><\/p>\n<p>Le nuage en vue de dessus donne le plan de l\u2019\u00e9difice :<a href=\"https:\/\/www.keris-studio.fr\/blog\/wp-content\/image233.png\"><img loading=\"lazy\" decoding=\"async\" style=\"background-image: none; border-bottom: 0px; border-left: 0px; padding-left: 0px; padding-right: 0px; display: inline; border-top: 0px; border-right: 0px; padding-top: 0px\" title=\"image\" border=\"0\" alt=\"image\" src=\"https:\/\/www.keris-studio.fr\/blog\/wp-content\/image_thumb231.png\" width=\"642\" height=\"317\" \/><\/a><\/p>\n<p>Le relev\u00e9 photographique n\u2019incluait pas de vues int\u00e9rieures.<\/p>\n<p>Comparaison avec le lev\u00e9 de L\u2019Helgouach : <a title=\"http:\/\/www.persee.fr\/web\/revues\/home\/prescript\/article\/rao_0767-709x_1989_num_6_1_932\" href=\"http:\/\/www.persee.fr\/web\/revues\/home\/prescript\/article\/rao_0767-709x_1989_num_6_1_932\">http:\/\/www.persee.fr\/web\/revues\/home\/prescript\/article\/rao_0767-709x_1989_num_6_1_932<\/a> \u2013 plan de fouille et reconstitution.<\/p>\n<p><a href=\"https:\/\/www.keris-studio.fr\/blog\/wp-content\/josefouille.jpg\"><img loading=\"lazy\" decoding=\"async\" style=\"background-image: none; border-bottom: 0px; border-left: 0px; padding-left: 0px; padding-right: 0px; display: inline; border-top: 0px; border-right: 0px; padding-top: 0px\" title=\"josefouille\" border=\"0\" alt=\"josefouille\" src=\"https:\/\/www.keris-studio.fr\/blog\/wp-content\/josefouille_thumb.jpg\" width=\"317\" height=\"316\" \/><\/a>&#160;<a href=\"https:\/\/www.keris-studio.fr\/blog\/wp-content\/josereconst.jpg\"><img loading=\"lazy\" decoding=\"async\" style=\"background-image: none; border-bottom: 0px; border-left: 0px; padding-left: 0px; padding-right: 0px; display: inline; border-top: 0px; border-right: 0px; padding-top: 0px\" title=\"josereconst\" border=\"0\" alt=\"josereconst\" src=\"https:\/\/www.keris-studio.fr\/blog\/wp-content\/josereconst_thumb.jpg\" width=\"317\" height=\"316\" \/><\/a><\/p>\n<p><a href=\"https:\/\/www.keris-studio.fr\/blog\/wp-content\/josesuperposition.jpg\"><img loading=\"lazy\" decoding=\"async\" style=\"background-image: none; border-bottom: 0px; border-left: 0px; padding-left: 0px; padding-right: 0px; display: inline; border-top: 0px; border-right: 0px; padding-top: 0px\" title=\"josesuperposition\" border=\"0\" alt=\"josesuperposition\" src=\"https:\/\/www.keris-studio.fr\/blog\/wp-content\/josesuperposition_thumb.jpg\" width=\"483\" height=\"482\" \/><\/a><\/p>\n<p>La superposition du nuage et des relev\u00e9s reste coh\u00e9rent. Un relev\u00e9 laser permettrait de valider la justesse v\u00e9ritable des positions.<\/p>\n<p>Le nuage export\u00e9 au format PLY, une fois nettoy\u00e9, il reste environ 60 000 exploitables.<a href=\"https:\/\/www.keris-studio.fr\/blog\/wp-content\/image234.png\"><img loading=\"lazy\" decoding=\"async\" style=\"background-image: none; border-bottom: 0px; border-left: 0px; margin: 0px; padding-left: 0px; padding-right: 0px; display: inline; border-top: 0px; border-right: 0px; padding-top: 0px\" title=\"image\" border=\"0\" alt=\"image\" src=\"https:\/\/www.keris-studio.fr\/blog\/wp-content\/image_thumb232.png\" width=\"642\" height=\"375\" \/><\/a>    <br clear=\"all\" \/>    <br clear=\"all\" \/><a href=\"https:\/\/www.keris-studio.fr\/blog\/wp-content\/image235.png\"><img loading=\"lazy\" decoding=\"async\" style=\"background-image: none; border-bottom: 0px; border-left: 0px; margin: 0px; padding-left: 0px; padding-right: 0px; display: inline; border-top: 0px; border-right: 0px; padding-top: 0px\" title=\"image\" border=\"0\" alt=\"image\" src=\"https:\/\/www.keris-studio.fr\/blog\/wp-content\/image_thumb233.png\" width=\"642\" height=\"221\" \/><\/a><\/p>\n<p>La passe par d\u00e9faut ne donne pas de bons r\u00e9sultats, il y a trop peu d\u2019informations, particuli\u00e8rement sur les faces sup\u00e9rieures.<a href=\"https:\/\/www.keris-studio.fr\/blog\/wp-content\/image236.png\"><img loading=\"lazy\" decoding=\"async\" style=\"background-image: none; border-bottom: 0px; border-left: 0px; margin: 0px; padding-left: 0px; padding-right: 0px; display: inline; border-top: 0px; border-right: 0px; padding-top: 0px\" title=\"image\" border=\"0\" alt=\"image\" src=\"https:\/\/www.keris-studio.fr\/blog\/wp-content\/image_thumb234.png\" width=\"642\" height=\"201\" \/><\/a><\/p>\n<p>Le maillage reste sommaire.<a href=\"https:\/\/www.keris-studio.fr\/blog\/wp-content\/image237.png\"><img loading=\"lazy\" decoding=\"async\" style=\"background-image: none; border-bottom: 0px; border-left: 0px; margin: 0px; padding-left: 0px; padding-right: 0px; display: inline; border-top: 0px; border-right: 0px; padding-top: 0px\" title=\"image\" border=\"0\" alt=\"image\" src=\"https:\/\/www.keris-studio.fr\/blog\/wp-content\/image_thumb235.png\" width=\"642\" height=\"307\" \/><\/a><\/p>\n<p>Photosynth donne de bons r\u00e9sultats pour restituer le plan de l\u2019\u00e9difice et les proportions g\u00e9n\u00e9rales, la remod\u00e9lisation est ici contrainte par le faible nombre de points malgr\u00e9 les 121 photos et le manque d\u2019informations sur les parties sup\u00e9rieures de l\u2019\u00e9difice. Une campagne de prise de vues compl\u00e9mentaires devra couvrir l\u2019int\u00e9rieur et le dessus du m\u00e9galithe.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Photosynth a \u00e9t\u00e9 utilis\u00e9 pour faire le relev\u00e9 de la Joseli\u00e8re. Une collection de 121 photographies pour une corr\u00e9lation de 100 % a \u00e9t\u00e9 engag\u00e9e. Le temps couvert \u00e9tait id\u00e9al pour obtenir une lumi\u00e8re uniforme et diffuse, toutefois, la tr\u00e8s faible luminosit\u00e9 a donn\u00e9 des contrastes (\u00e9quivalent occlusions ambiantes) tr\u00e8s faibles. Le nuage de points &hellip; <a href=\"https:\/\/www.keris-studio.fr\/blog\/?p=1611\" class=\"more-link\">Continuer la lecture de <span class=\"screen-reader-text\">3D-photo &#8211; La Joseli\u00e8re, relev\u00e9 Photosynth<\/span>  <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6,117,14,25,8,147],"tags":[150,153],"class_list":["post-1611","post","type-post","status-publish","format-standard","hentry","category-3d","category-archeologie","category-conception","category-etats-de-lart","category-methodologie","category-photomodelisation","tag-joseliere","tag-photosynth"],"_links":{"self":[{"href":"https:\/\/www.keris-studio.fr\/blog\/index.php?rest_route=\/wp\/v2\/posts\/1611","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.keris-studio.fr\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.keris-studio.fr\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.keris-studio.fr\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.keris-studio.fr\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1611"}],"version-history":[{"count":3,"href":"https:\/\/www.keris-studio.fr\/blog\/index.php?rest_route=\/wp\/v2\/posts\/1611\/revisions"}],"predecessor-version":[{"id":5343,"href":"https:\/\/www.keris-studio.fr\/blog\/index.php?rest_route=\/wp\/v2\/posts\/1611\/revisions\/5343"}],"wp:attachment":[{"href":"https:\/\/www.keris-studio.fr\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1611"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.keris-studio.fr\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1611"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.keris-studio.fr\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1611"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}