{"id":1590,"date":"2015-11-04T14:19:56","date_gmt":"2015-11-04T13:19:56","guid":{"rendered":"http:\/\/voyager3.com\/?page_id=1590"},"modified":"2015-11-04T14:31:44","modified_gmt":"2015-11-04T13:31:44","slug":"pixmoy","status":"publish","type":"page","link":"https:\/\/voyager3.com\/?page_id=1590","title":{"rendered":"PixMoy"},"content":{"rendered":"<p>PixMoy (<strong>Pix<\/strong>els <strong>Moy<\/strong>ens) est un petit soft permettant de moyenner un ensemble d\u2019image webcam en soustrayant les darks associ\u00e9s.<br \/>\nLe but premier de PixMoy est d\u2019\u00e9viter les effets de perte d\u2019informations dues aux pixels<br \/>\nsatur\u00e9s des darks et du ph\u00e9nom\u00e8ne d\u2019\u0153il de merlan (chute de la valeur des pixels autour d\u2019un pixel satur\u00e9).<\/p>\n<p>Le principe de fonctionnement de PixMoy est de pond\u00e9r\u00e9e le calcul de la valeur moyenne de chaque pixel, non pas par le nombre d\u2019image, mais par le nombre de pixel non satur\u00e9 contribuant \u00e0 la valeur moyenne d\u2019un pixel<br \/>\ndonn\u00e9.\u00a0 Ainsi,\u00a0 le principe de PixMoy impose d\u2019avoir des images ayant des d\u00e9calages (en x et en y) entre elles.<\/p>\n<ul>\n<ul>\n<li>Exemple d&rsquo;effet sur une image acquise en 2002 \u00e0 l&rsquo;aide d&rsquo;un vesta pro modifi\u00e9e longue pose lors d&rsquo;une mission \u00e0 l&rsquo;observatoire de Saint V\u00e9ran.<\/li>\n<\/ul>\n<\/ul>\n<p style=\"padding-left: 90px;\">&#8211; Image brute de M74 et un dark associ\u00e9 comportant des pixels satur\u00e9s<\/p>\n<table  class=\" table table-hover\" style=\"height: 240px;\" width=\"800\">\n<tbody>\n<tr>\n<td style=\"padding-left: 60px;\"><a href=\"https:\/\/i0.wp.com\/voyager3.com\/wp-content\/uploads\/2015\/11\/image_brute.jpg?ssl=1\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"1594\" data-permalink=\"https:\/\/voyager3.com\/?attachment_id=1594\" data-orig-file=\"https:\/\/i0.wp.com\/voyager3.com\/wp-content\/uploads\/2015\/11\/image_brute.jpg?fit=640%2C480&amp;ssl=1\" data-orig-size=\"640,480\" data-comments-opened=\"0\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"image_brute\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/voyager3.com\/wp-content\/uploads\/2015\/11\/image_brute.jpg?fit=640%2C480&amp;ssl=1\" class=\"size-medium wp-image-1594 aligncenter\" src=\"https:\/\/i0.wp.com\/voyager3.com\/wp-content\/uploads\/2015\/11\/image_brute.jpg?resize=300%2C225&#038;ssl=1\" alt=\"image_brute\" width=\"300\" height=\"225\" srcset=\"https:\/\/i0.wp.com\/voyager3.com\/wp-content\/uploads\/2015\/11\/image_brute.jpg?resize=300%2C225&amp;ssl=1 300w, https:\/\/i0.wp.com\/voyager3.com\/wp-content\/uploads\/2015\/11\/image_brute.jpg?resize=175%2C131&amp;ssl=1 175w, https:\/\/i0.wp.com\/voyager3.com\/wp-content\/uploads\/2015\/11\/image_brute.jpg?w=640&amp;ssl=1 640w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/td>\n<td><a href=\"https:\/\/i0.wp.com\/voyager3.com\/wp-content\/uploads\/2015\/11\/dark.jpg?ssl=1\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"1592\" data-permalink=\"https:\/\/voyager3.com\/?attachment_id=1592\" data-orig-file=\"https:\/\/i0.wp.com\/voyager3.com\/wp-content\/uploads\/2015\/11\/dark.jpg?fit=640%2C480&amp;ssl=1\" data-orig-size=\"640,480\" data-comments-opened=\"0\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"dark\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/voyager3.com\/wp-content\/uploads\/2015\/11\/dark.jpg?fit=640%2C480&amp;ssl=1\" class=\"size-medium wp-image-1592 aligncenter\" src=\"https:\/\/i0.wp.com\/voyager3.com\/wp-content\/uploads\/2015\/11\/dark.jpg?resize=300%2C225&#038;ssl=1\" alt=\"dark\" width=\"300\" height=\"225\" srcset=\"https:\/\/i0.wp.com\/voyager3.com\/wp-content\/uploads\/2015\/11\/dark.jpg?resize=300%2C225&amp;ssl=1 300w, https:\/\/i0.wp.com\/voyager3.com\/wp-content\/uploads\/2015\/11\/dark.jpg?resize=175%2C131&amp;ssl=1 175w, https:\/\/i0.wp.com\/voyager3.com\/wp-content\/uploads\/2015\/11\/dark.jpg?w=640&amp;ssl=1 640w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p style=\"padding-left: 90px;\">&#8211; Masque et coefficient de pond\u00e9ration utilis\u00e9 par PixMoy pour contourn\u00e9 les pixels satur\u00e9s des darks.<\/p>\n<table  class=\" table table-hover\" >\n<tbody>\n<tr>\n<td style=\"padding-left: 60px;\"><a href=\"https:\/\/i0.wp.com\/voyager3.com\/wp-content\/uploads\/2015\/11\/mask.jpg?ssl=1\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"1593\" data-permalink=\"https:\/\/voyager3.com\/?attachment_id=1593\" data-orig-file=\"https:\/\/i0.wp.com\/voyager3.com\/wp-content\/uploads\/2015\/11\/mask.jpg?fit=675%2C508&amp;ssl=1\" data-orig-size=\"675,508\" data-comments-opened=\"0\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"mask\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/voyager3.com\/wp-content\/uploads\/2015\/11\/mask.jpg?fit=648%2C488&amp;ssl=1\" class=\"size-medium wp-image-1593 aligncenter\" src=\"https:\/\/i0.wp.com\/voyager3.com\/wp-content\/uploads\/2015\/11\/mask.jpg?resize=300%2C226&#038;ssl=1\" alt=\"mask\" width=\"300\" height=\"226\" srcset=\"https:\/\/i0.wp.com\/voyager3.com\/wp-content\/uploads\/2015\/11\/mask.jpg?resize=300%2C226&amp;ssl=1 300w, https:\/\/i0.wp.com\/voyager3.com\/wp-content\/uploads\/2015\/11\/mask.jpg?resize=175%2C131&amp;ssl=1 175w, https:\/\/i0.wp.com\/voyager3.com\/wp-content\/uploads\/2015\/11\/mask.jpg?resize=664%2C500&amp;ssl=1 664w, https:\/\/i0.wp.com\/voyager3.com\/wp-content\/uploads\/2015\/11\/mask.jpg?w=675&amp;ssl=1 675w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/td>\n<td><a href=\"https:\/\/i0.wp.com\/voyager3.com\/wp-content\/uploads\/2015\/11\/moy.jpg?ssl=1\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"1595\" data-permalink=\"https:\/\/voyager3.com\/?attachment_id=1595\" data-orig-file=\"https:\/\/i0.wp.com\/voyager3.com\/wp-content\/uploads\/2015\/11\/moy.jpg?fit=674%2C507&amp;ssl=1\" data-orig-size=\"674,507\" data-comments-opened=\"0\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"moy\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/voyager3.com\/wp-content\/uploads\/2015\/11\/moy.jpg?fit=648%2C487&amp;ssl=1\" class=\"size-medium wp-image-1595 aligncenter\" src=\"https:\/\/i0.wp.com\/voyager3.com\/wp-content\/uploads\/2015\/11\/moy.jpg?resize=300%2C226&#038;ssl=1\" alt=\"moy\" width=\"300\" height=\"226\" srcset=\"https:\/\/i0.wp.com\/voyager3.com\/wp-content\/uploads\/2015\/11\/moy.jpg?resize=300%2C226&amp;ssl=1 300w, https:\/\/i0.wp.com\/voyager3.com\/wp-content\/uploads\/2015\/11\/moy.jpg?resize=175%2C131&amp;ssl=1 175w, https:\/\/i0.wp.com\/voyager3.com\/wp-content\/uploads\/2015\/11\/moy.jpg?resize=665%2C500&amp;ssl=1 665w, https:\/\/i0.wp.com\/voyager3.com\/wp-content\/uploads\/2015\/11\/moy.jpg?w=674&amp;ssl=1 674w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p style=\"padding-left: 90px;\">&#8211; M74 sans l&rsquo;utilisation de PixMoy et avec l&rsquo;utilisation de PixMoy<\/p>\n<table  class=\" table table-hover\" >\n<tbody>\n<tr>\n<td style=\"padding-left: 60px;\"><a href=\"https:\/\/i0.wp.com\/voyager3.com\/wp-content\/uploads\/2015\/11\/M74_sans_pixmoy.jpg?ssl=1\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"1598\" data-permalink=\"https:\/\/voyager3.com\/?attachment_id=1598\" data-orig-file=\"https:\/\/i0.wp.com\/voyager3.com\/wp-content\/uploads\/2015\/11\/M74_sans_pixmoy.jpg?fit=674%2C507&amp;ssl=1\" data-orig-size=\"674,507\" data-comments-opened=\"0\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"M74_sans_pixmoy\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/voyager3.com\/wp-content\/uploads\/2015\/11\/M74_sans_pixmoy.jpg?fit=648%2C487&amp;ssl=1\" class=\"size-medium wp-image-1598 aligncenter\" src=\"https:\/\/i0.wp.com\/voyager3.com\/wp-content\/uploads\/2015\/11\/M74_sans_pixmoy.jpg?resize=300%2C226&#038;ssl=1\" alt=\"M74_sans_pixmoy\" width=\"300\" height=\"226\" srcset=\"https:\/\/i0.wp.com\/voyager3.com\/wp-content\/uploads\/2015\/11\/M74_sans_pixmoy.jpg?resize=300%2C226&amp;ssl=1 300w, https:\/\/i0.wp.com\/voyager3.com\/wp-content\/uploads\/2015\/11\/M74_sans_pixmoy.jpg?resize=175%2C131&amp;ssl=1 175w, https:\/\/i0.wp.com\/voyager3.com\/wp-content\/uploads\/2015\/11\/M74_sans_pixmoy.jpg?resize=665%2C500&amp;ssl=1 665w, https:\/\/i0.wp.com\/voyager3.com\/wp-content\/uploads\/2015\/11\/M74_sans_pixmoy.jpg?w=674&amp;ssl=1 674w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/td>\n<td><a href=\"https:\/\/i0.wp.com\/voyager3.com\/wp-content\/uploads\/2015\/11\/M74_avec_pixmoy.jpg?ssl=1\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"1597\" data-permalink=\"https:\/\/voyager3.com\/?attachment_id=1597\" data-orig-file=\"https:\/\/i0.wp.com\/voyager3.com\/wp-content\/uploads\/2015\/11\/M74_avec_pixmoy.jpg?fit=674%2C507&amp;ssl=1\" data-orig-size=\"674,507\" data-comments-opened=\"0\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"M74_avec_pixmoy\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/voyager3.com\/wp-content\/uploads\/2015\/11\/M74_avec_pixmoy.jpg?fit=648%2C487&amp;ssl=1\" class=\"size-medium wp-image-1597 aligncenter\" src=\"https:\/\/i0.wp.com\/voyager3.com\/wp-content\/uploads\/2015\/11\/M74_avec_pixmoy.jpg?resize=300%2C226&#038;ssl=1\" alt=\"M74_avec_pixmoy\" width=\"300\" height=\"226\" srcset=\"https:\/\/i0.wp.com\/voyager3.com\/wp-content\/uploads\/2015\/11\/M74_avec_pixmoy.jpg?resize=300%2C226&amp;ssl=1 300w, https:\/\/i0.wp.com\/voyager3.com\/wp-content\/uploads\/2015\/11\/M74_avec_pixmoy.jpg?resize=175%2C131&amp;ssl=1 175w, https:\/\/i0.wp.com\/voyager3.com\/wp-content\/uploads\/2015\/11\/M74_avec_pixmoy.jpg?resize=665%2C500&amp;ssl=1 665w, https:\/\/i0.wp.com\/voyager3.com\/wp-content\/uploads\/2015\/11\/M74_avec_pixmoy.jpg?w=674&amp;ssl=1 674w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<ul>\n<ul>\n<li>Documentation de PixMoy: (<a href=\"https:\/\/voyager3.com\/wp-content\/uploads\/2015\/11\/pixmoy.pdf\">pdf<\/a>)<\/li>\n<\/ul>\n<\/ul>\n<ul>\n<ul>\n<li>T\u00e9l\u00e9charger <span style=\"color: #000080; font-size: 14pt;\"><strong><a href=\"https:\/\/voyager3.com\/wp-content\/uploads\/2015\/03\/pixmoy_271102.zip\">PixMoy<\/a><\/strong><\/span> (programme en ligne de commande DOS))<\/li>\n<\/ul>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>PixMoy (Pixels Moyens) est un petit soft permettant de moyenner un ensemble d\u2019image webcam en soustrayant les darks associ\u00e9s. Le but premier de PixMoy est d\u2019\u00e9viter les effets de perte d\u2019informations dues aux pixels satur\u00e9s des darks et du ph\u00e9nom\u00e8ne d\u2019\u0153il de merlan (chute de la valeur des pixels autour d\u2019un pixel satur\u00e9). Le principe [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"parent":609,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_exactmetrics_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0,"jetpack_post_was_ever_published":false,"footnotes":""},"class_list":["post-1590","page","type-page","status-publish","hentry"],"jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/P6Vaq2-pE","jetpack_likes_enabled":true,"_links":{"self":[{"href":"https:\/\/voyager3.com\/index.php?rest_route=\/wp\/v2\/pages\/1590","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/voyager3.com\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/voyager3.com\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/voyager3.com\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/voyager3.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1590"}],"version-history":[{"count":8,"href":"https:\/\/voyager3.com\/index.php?rest_route=\/wp\/v2\/pages\/1590\/revisions"}],"predecessor-version":[{"id":1606,"href":"https:\/\/voyager3.com\/index.php?rest_route=\/wp\/v2\/pages\/1590\/revisions\/1606"}],"up":[{"embeddable":true,"href":"https:\/\/voyager3.com\/index.php?rest_route=\/wp\/v2\/pages\/609"}],"wp:attachment":[{"href":"https:\/\/voyager3.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1590"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}