{"id":11448,"date":"2009-07-22T01:18:24","date_gmt":"2009-07-21T23:18:24","guid":{"rendered":"http:\/\/www.boscarol.com\/blog\/?p=11448"},"modified":"2010-02-28T16:46:59","modified_gmt":"2010-02-28T15:46:59","slug":"sfuma-feather","status":"publish","type":"post","link":"http:\/\/www.boscarol.com\/blog\/?p=11448","title":{"rendered":"Sfuma <i>Feather<\/i>"},"content":{"rendered":"<p><img loading=\"lazy\" class=\"alignnone size-full wp-image-11449\" style=\"border: 0px none;\" title=\"Selezione rettangolare_700\" src=\"https:\/\/i2.wp.com\/www.boscarol.com\/blog\/wp-content\/uploads\/2009\/07\/Selezione-rettangolare_700.jpg?resize=700%2C47\" alt=\"Selezione rettangolare_700\" width=\"700\" height=\"47\" srcset=\"https:\/\/i2.wp.com\/www.boscarol.com\/blog\/wp-content\/uploads\/2009\/07\/Selezione-rettangolare_700.jpg?w=700 700w, https:\/\/i2.wp.com\/www.boscarol.com\/blog\/wp-content\/uploads\/2009\/07\/Selezione-rettangolare_700.jpg?w=300 300w\" sizes=\"(max-width: 700px) 100vw, 700px\" data-recalc-dims=\"1\" \/><\/p>\n<p><img loading=\"lazy\" class=\"alignnone size-full wp-image-11439\" style=\"border: 0px none;\" title=\"Selezione ellittica_700\" src=\"https:\/\/i0.wp.com\/www.boscarol.com\/blog\/wp-content\/uploads\/2009\/07\/Selezione-ellittica_700.jpg?resize=700%2C47\" alt=\"Selezione ellittica_700\" width=\"700\" height=\"47\" srcset=\"https:\/\/i0.wp.com\/www.boscarol.com\/blog\/wp-content\/uploads\/2009\/07\/Selezione-ellittica_700.jpg?w=700 700w, https:\/\/i0.wp.com\/www.boscarol.com\/blog\/wp-content\/uploads\/2009\/07\/Selezione-ellittica_700.jpg?w=300 300w\" sizes=\"(max-width: 700px) 100vw, 700px\" data-recalc-dims=\"1\" \/><\/p>\n<p><img loading=\"lazy\" class=\"alignnone size-full wp-image-11450\" style=\"border: 0px none;\" title=\"Selezione singola riga_700\" src=\"https:\/\/i0.wp.com\/www.boscarol.com\/blog\/wp-content\/uploads\/2009\/07\/Selezione-singola-riga_700.jpg?resize=700%2C35\" alt=\"Selezione singola riga_700\" width=\"700\" height=\"35\" srcset=\"https:\/\/i0.wp.com\/www.boscarol.com\/blog\/wp-content\/uploads\/2009\/07\/Selezione-singola-riga_700.jpg?w=700 700w, https:\/\/i0.wp.com\/www.boscarol.com\/blog\/wp-content\/uploads\/2009\/07\/Selezione-singola-riga_700.jpg?w=300 300w\" sizes=\"(max-width: 700px) 100vw, 700px\" data-recalc-dims=\"1\" \/><\/p>\n<p><img loading=\"lazy\" class=\"alignnone size-full wp-image-11451\" style=\"border: 0px none;\" title=\"Selezione singola colonna_700\" src=\"https:\/\/i1.wp.com\/www.boscarol.com\/blog\/wp-content\/uploads\/2009\/07\/Selezione-singola-colonna_700.jpg?resize=700%2C35\" alt=\"Selezione singola colonna_700\" width=\"700\" height=\"35\" srcset=\"https:\/\/i1.wp.com\/www.boscarol.com\/blog\/wp-content\/uploads\/2009\/07\/Selezione-singola-colonna_700.jpg?w=700 700w, https:\/\/i1.wp.com\/www.boscarol.com\/blog\/wp-content\/uploads\/2009\/07\/Selezione-singola-colonna_700.jpg?w=300 300w\" sizes=\"(max-width: 700px) 100vw, 700px\" data-recalc-dims=\"1\" \/><\/p>\n<p><img loading=\"lazy\" class=\"alignnone size-full wp-image-11440\" style=\"border: 0px none;\" title=\"Lazo_700\" src=\"https:\/\/i1.wp.com\/www.boscarol.com\/blog\/wp-content\/uploads\/2009\/07\/Lazo_700.jpg?resize=700%2C35\" alt=\"Lazo_700\" width=\"700\" height=\"35\" srcset=\"https:\/\/i1.wp.com\/www.boscarol.com\/blog\/wp-content\/uploads\/2009\/07\/Lazo_700.jpg?w=700 700w, https:\/\/i1.wp.com\/www.boscarol.com\/blog\/wp-content\/uploads\/2009\/07\/Lazo_700.jpg?w=300 300w\" sizes=\"(max-width: 700px) 100vw, 700px\" data-recalc-dims=\"1\" \/><\/p>\n<p><img loading=\"lazy\" class=\"alignnone size-full wp-image-11441\" style=\"border: 0px none;\" title=\"Lazo poligonale_700\" src=\"https:\/\/i2.wp.com\/www.boscarol.com\/blog\/wp-content\/uploads\/2009\/07\/Lazo-poligonale_700.jpg?resize=700%2C35\" alt=\"Lazo poligonale_700\" width=\"700\" height=\"35\" srcset=\"https:\/\/i2.wp.com\/www.boscarol.com\/blog\/wp-content\/uploads\/2009\/07\/Lazo-poligonale_700.jpg?w=700 700w, https:\/\/i2.wp.com\/www.boscarol.com\/blog\/wp-content\/uploads\/2009\/07\/Lazo-poligonale_700.jpg?w=300 300w\" sizes=\"(max-width: 700px) 100vw, 700px\" data-recalc-dims=\"1\" \/><\/p>\n<p><img loading=\"lazy\" class=\"alignnone size-full wp-image-11443\" style=\"border: 0px none;\" title=\"Lazo magnetico_700\" src=\"https:\/\/i1.wp.com\/www.boscarol.com\/blog\/wp-content\/uploads\/2009\/07\/Lazo-magnetico_7001.jpg?resize=700%2C35\" alt=\"Lazo magnetico_700\" width=\"700\" height=\"35\" srcset=\"https:\/\/i1.wp.com\/www.boscarol.com\/blog\/wp-content\/uploads\/2009\/07\/Lazo-magnetico_7001.jpg?w=700 700w, https:\/\/i1.wp.com\/www.boscarol.com\/blog\/wp-content\/uploads\/2009\/07\/Lazo-magnetico_7001.jpg?w=300 300w\" sizes=\"(max-width: 700px) 100vw, 700px\" data-recalc-dims=\"1\" \/><\/p>\n<p>Con gli strumenti di selezione qui sopra indicati (rettangolare, ellittica, riga, colonna, lazo, lazo poligonale, lazo magnetico) e nel comando Crea selezione da un tracciato si\u00a0pu\u00f2 specificare una <span style=\"text-decoration: underline;\">sfumatura<\/span> (<em>feather<\/em>) compresa tra 0 e 250 pixel (0 significa niente sfumatura).  Il valore di sfumatura va specificato prima di tracciare la selezione.<\/p>\n<p>Se la selezione \u00e8 gi\u00e0 fatta si pu\u00f2 impostare il valore di sfumatura con il men\u00f9 Selezione &gt; Modifica &gt; Sfuma. In questo caso pu\u00f2 andare da 0.2 a 250 pixel:<\/p>\n<p><img loading=\"lazy\" class=\"alignnone size-full wp-image-10235\" style=\"border: 0px none;\" title=\"Sfuma Selezione\" src=\"https:\/\/i0.wp.com\/www.boscarol.com\/blog\/wp-content\/uploads\/2009\/04\/pscs4_sfuma_selezione.jpg?resize=353%2C90\" alt=\"Sfuma Selezione\" width=\"353\" height=\"90\" srcset=\"https:\/\/i0.wp.com\/www.boscarol.com\/blog\/wp-content\/uploads\/2009\/04\/pscs4_sfuma_selezione.jpg?w=353 353w, https:\/\/i0.wp.com\/www.boscarol.com\/blog\/wp-content\/uploads\/2009\/04\/pscs4_sfuma_selezione.jpg?w=300 300w\" sizes=\"(max-width: 353px) 100vw, 353px\" data-recalc-dims=\"1\" \/><\/p>\n<p>Tecnicamente, per creare la sfumatura, Photoshop seleziona parzialmente i bordi della selezione in modo che il passaggio da pixel selezionati a pixel non selezionati sia graduale. La sfumatura sfoca i bordi creando un contorno tra i pixel selezionati e lo sfondo, visibile quando si sposta, copia o taglia la selezione.<\/p>\n<p>Qui sotto una selezione quadrata senza sfocatura, al centro il relativo canale alfa e a destra quello che si ottiene cancellando le parti non selezionate.<\/p>\n<p><img loading=\"lazy\" class=\"alignnone size-full wp-image-10236\" style=\"border: 0px none;\" title=\"a11\" src=\"https:\/\/i1.wp.com\/www.boscarol.com\/blog\/wp-content\/uploads\/2009\/04\/a11.jpg?resize=170%2C100\" alt=\"a11\" width=\"170\" height=\"100\" data-recalc-dims=\"1\" \/> <img loading=\"lazy\" class=\"alignnone size-full wp-image-10237\" style=\"border: 0px none;\" title=\"a21\" src=\"https:\/\/i2.wp.com\/www.boscarol.com\/blog\/wp-content\/uploads\/2009\/04\/a21.jpg?resize=170%2C100\" alt=\"a21\" width=\"170\" height=\"100\" data-recalc-dims=\"1\" \/> <img loading=\"lazy\" class=\"alignnone size-full wp-image-10238\" style=\"border: 0px none;\" title=\"a31\" src=\"https:\/\/i1.wp.com\/www.boscarol.com\/blog\/wp-content\/uploads\/2009\/04\/a31.jpg?resize=170%2C100\" alt=\"a31\" width=\"170\" height=\"100\" data-recalc-dims=\"1\" \/><\/p>\n<p>Qui sotto la stessa selezione quadrata ma con 5 pixel di sfumatura.<\/p>\n<p><img loading=\"lazy\" class=\"alignnone size-full wp-image-10239\" style=\"border: 0px none;\" title=\"a4\" src=\"https:\/\/i0.wp.com\/www.boscarol.com\/blog\/wp-content\/uploads\/2009\/04\/a4.jpg?resize=170%2C100\" alt=\"a4\" width=\"170\" height=\"100\" data-recalc-dims=\"1\" \/> <img loading=\"lazy\" class=\"alignnone size-full wp-image-10240\" style=\"border: 0px none;\" title=\"a5\" src=\"https:\/\/i2.wp.com\/www.boscarol.com\/blog\/wp-content\/uploads\/2009\/04\/a5.jpg?resize=170%2C100\" alt=\"a5\" width=\"170\" height=\"100\" data-recalc-dims=\"1\" \/> <img loading=\"lazy\" class=\"alignnone size-full wp-image-10241\" style=\"border: 0px none;\" title=\"a6\" src=\"https:\/\/i0.wp.com\/www.boscarol.com\/blog\/wp-content\/uploads\/2009\/04\/a6.jpg?resize=170%2C100\" alt=\"a6\" width=\"170\" height=\"100\" data-recalc-dims=\"1\" \/><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Con gli strumenti di selezione qui sopra indicati (rettangolare, ellittica, riga, colonna, lazo, lazo poligonale, lazo magnetico) e nel comando Crea selezione da un tracciato si\u00a0pu\u00f2 specificare una sfumatura (feather) compresa tra 0 e 250 pixel (0 significa niente sfumatura). Il valore di sfumatura va specificato prima di tracciare la selezione. Se la selezione \u00e8 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"spay_email":"","jetpack_publicize_message":"","jetpack_is_tweetstorm":false},"categories":[672,736],"tags":[740,739],"jetpack_featured_media_url":"","jetpack_publicize_connections":[],"jetpack_shortlink":"https:\/\/wp.me\/pjoVH-2YE","jetpack_sharing_enabled":true,"jetpack_likes_enabled":false,"_links":{"self":[{"href":"http:\/\/www.boscarol.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/11448"}],"collection":[{"href":"http:\/\/www.boscarol.com\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.boscarol.com\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.boscarol.com\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.boscarol.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=11448"}],"version-history":[{"count":8,"href":"http:\/\/www.boscarol.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/11448\/revisions"}],"predecessor-version":[{"id":11456,"href":"http:\/\/www.boscarol.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/11448\/revisions\/11456"}],"wp:attachment":[{"href":"http:\/\/www.boscarol.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=11448"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.boscarol.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=11448"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.boscarol.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=11448"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}