{"id":24329,"date":"2014-03-11T21:07:09","date_gmt":"2014-03-11T20:07:09","guid":{"rendered":"http:\/\/www.boscarol.com\/blog\/?p=24329"},"modified":"2016-04-27T02:27:35","modified_gmt":"2016-04-27T00:27:35","slug":"curva-di-risposta-tonale-cosiddetto-gamma-srgb","status":"publish","type":"post","link":"http:\/\/www.boscarol.com\/blog\/?p=24329","title":{"rendered":"Curva di risposta tonale (cosiddetto &#8220;gamma&#8221;) sRGB"},"content":{"rendered":"<p><strong><br \/>\nFormula diretta<\/strong><\/p>\n<p>La formula diretta fornisce i numeri P (cio\u00e8 R o G o B, con valori tra 0 \u00a0e 1) in termini del <strong>fattore di luminanza Y<\/strong>\u00a0(con valori tra 0 e 1) ed \u00e8 la seguente<\/p>\n<p style=\"padding-left: 30px;\"><tt>se Y &lt; 0.0031308 allora P = 12.92 * Y<br \/>\nse Y \u2265 0.0031308 allora P = 1.055 * Y<sup>1\/2.4<\/sup>\u00a0- 0.055<\/tt><\/p>\n<p><strong><br \/>\nFormula inversa<\/strong><\/p>\n<p>La formula inversa fornisce il\u00a0<strong>fattore di luminanza Y<\/strong>\u00a0(con valori tra 0 e 1) in termini di\u00a0<strong>numeri P<\/strong>\u00a0(con valori tra 0 e 1) dove P \u00e8 R o G o B ed \u00e8 la seguente<\/p>\n<p style=\"padding-left: 30px;\"><tt>se P \u2264 0.04045 allora\u00a0Y = P \/ 12.92<br \/>\nse P &gt; 0.04045 allora\u00a0Y = ((P + 0.055)\/1.055)<sup>2.4<\/sup>\u00a0\u00a0<\/tt><\/p>\n<p><img loading=\"lazy\" class=\"alignnone wp-image-24376\" src=\"https:\/\/i2.wp.com\/www.boscarol.com\/blog\/wp-content\/uploads\/2014\/03\/SafariSnapz001.jpg?resize=641%2C542\" alt=\"TRC\" width=\"641\" height=\"542\" srcset=\"https:\/\/i2.wp.com\/www.boscarol.com\/blog\/wp-content\/uploads\/2014\/03\/SafariSnapz001.jpg?w=801 801w, https:\/\/i2.wp.com\/www.boscarol.com\/blog\/wp-content\/uploads\/2014\/03\/SafariSnapz001.jpg?resize=300%2C253 300w\" sizes=\"(max-width: 641px) 100vw, 641px\" data-recalc-dims=\"1\" \/><\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Formula diretta La formula diretta fornisce i numeri P (cio\u00e8 R o G o B, con valori tra 0 \u00a0e 1) in termini del fattore di luminanza Y\u00a0(con valori tra 0 e 1) ed \u00e8 la seguente se Y &lt; 0.0031308 allora P = 12.92 * Y se Y \u2265 0.0031308 allora P = 1.055 [&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":[1362],"tags":[208,17,1489,125],"jetpack_featured_media_url":"","jetpack_publicize_connections":[],"jetpack_shortlink":"https:\/\/wp.me\/pjoVH-6kp","jetpack_sharing_enabled":true,"jetpack_likes_enabled":false,"_links":{"self":[{"href":"http:\/\/www.boscarol.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/24329"}],"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=24329"}],"version-history":[{"count":6,"href":"http:\/\/www.boscarol.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/24329\/revisions"}],"predecessor-version":[{"id":25939,"href":"http:\/\/www.boscarol.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/24329\/revisions\/25939"}],"wp:attachment":[{"href":"http:\/\/www.boscarol.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=24329"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.boscarol.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=24329"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.boscarol.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=24329"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}