{"id":6092,"date":"2020-08-30T08:46:19","date_gmt":"2020-08-30T06:46:19","guid":{"rendered":"http:\/\/www.arnaudom.fr\/wordpress\/?page_id=6092"},"modified":"2020-08-30T08:58:06","modified_gmt":"2020-08-30T06:58:06","slug":"calibration","status":"publish","type":"page","link":"https:\/\/www.arnaudom.fr\/wordpress\/calibration\/","title":{"rendered":"calibration"},"content":{"rendered":"\t\t
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Traitement des images lin\u00e9aires avec PixInsight (4\/4)<\/h1>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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4-Calibrer les couleurs<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Pour calibrer les couleurs, il faut tout d’abord proc\u00e9der \u00e0 une neutralisation du fond du ciel. Pour cela, on va utiliser le process BackgroundNeutralization<\/span><\/strong> ou, si vous utilisez mes process icons, aller sur l’ic\u00f4ne Neutralisation_du_fond_de_ciel<\/span><\/strong>.<\/p>

Pour commencer, il faut faire un preview sur une zone \u00ab neutre \u00bb de notre image, \u00e0 savoir sur une zone relativement noire, ne contenant pas ou peu d’\u00e9toiles brillantes.<\/p>

\"Pix\"<\/div>

\u00a0<\/p>

On lance le process et dans la zone Reference image<\/strong> :<\/span> il faut entrer le nom de notre preview.<\/p>

\"Pix\"<\/div>

\u00a0<\/p>

On clique sur l’ic\u00f4ne \u00e0 droite de Reference image :<\/strong> <\/span> <\/span> ce qui a pour effet d’ouvrir la fen\u00eatre Select Reference Image<\/span><\/strong>.<\/p>

\"Pix\"<\/div>

On ouvre le menu d\u00e9roulant et on va choisir notre preview, en cliquant sur M51finale->Preview01<\/span><\/strong>.<\/p>

\"Pix\"<\/div>

\u00a0<\/p>

On fait OK<\/span><\/strong> et le nom du preview se retrouve en r\u00e9f\u00e9rence dans notre process. On n’a plus qu’\u00e0 l’appliquer sur notre image en y d\u00e9posant le triangle bleu.<\/p>

\"Pix\"<\/div>

\u00a0<\/p>

On va maintenant utiliser le process ColorCalibration<\/span><\/strong> ou, si vous utilisez mes process ic\u00f4ne, on va aller sur l’ic\u00f4ne Calibration_des_couleurs<\/span><\/strong>. Pour l’utiliser, il faut faire un second preview qui va englober M51.<\/p>

\"Pix\"<\/div>

\u00a0<\/p>

Maintenant on va entrer le nom de notre Preview02<\/span> <\/strong>dans Reference image :<\/span><\/strong> dans la zone White Reference<\/span><\/strong>, comme on l’a fait pr\u00e9c\u00e9demment dans le process BackgroundNeutralization<\/strong><\/span>.<\/p>

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Et dans Reference image :<\/span> <\/strong>dans la zone Background Reference<\/span><\/strong> on entre le nom de notre Preview01<\/span><\/strong>.<\/p>

Il ne reste plus qu’\u00e0 appliquer le process sur l’image, et la calibration des couleurs est termin\u00e9e !<\/p>

\"Pix\"<\/div>

\u00a0<\/p>

Voil\u00e0, le traitement de l’image lin\u00e9aire est termin\u00e9.<\/p>

Nous la transformerons ensuite en image non-lin\u00e9aire, ceci sera l’objet du prochain tutoriel qui parlera du traitement des images non-lin\u00e9aires.<\/p>\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\t\n\t\t\t\t<\/i>\t\t\t<\/span>\n\t\t\t\t\t\tPage 3<\/span>\n\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"

Traitement des images lin\u00e9aires avec PixInsight (4\/4) 4-Calibrer les couleurs Pour calibrer les couleurs, il faut tout d’abord proc\u00e9der \u00e0 une neutralisation du fond du ciel. Pour cela, on va utiliser le process BackgroundNeutralization ou, si vous utilisez mes process icons, aller sur l’ic\u00f4ne Neutralisation_du_fond_de_ciel. Pour commencer, il faut faire un preview sur une zone …<\/p>\n

calibration<\/span> Lire la suite\u00a0\u00bb<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"site-sidebar-layout":"default","site-content-layout":"default","ast-site-content-layout":"","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":"disabled","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"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-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-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-gradient":""}},"ast-content-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-gradient":""},"tablet":{"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-gradient":""},"mobile":{"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-gradient":""}},"footnotes":""},"class_list":["post-6092","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.arnaudom.fr\/wordpress\/wp-json\/wp\/v2\/pages\/6092","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.arnaudom.fr\/wordpress\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.arnaudom.fr\/wordpress\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.arnaudom.fr\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.arnaudom.fr\/wordpress\/wp-json\/wp\/v2\/comments?post=6092"}],"version-history":[{"count":7,"href":"https:\/\/www.arnaudom.fr\/wordpress\/wp-json\/wp\/v2\/pages\/6092\/revisions"}],"predecessor-version":[{"id":6101,"href":"https:\/\/www.arnaudom.fr\/wordpress\/wp-json\/wp\/v2\/pages\/6092\/revisions\/6101"}],"wp:attachment":[{"href":"https:\/\/www.arnaudom.fr\/wordpress\/wp-json\/wp\/v2\/media?parent=6092"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}