{"id":2822,"date":"2020-03-23T18:38:45","date_gmt":"2020-03-23T17:38:45","guid":{"rendered":"https:\/\/www.proof.de\/?post_type=encyclopedia&p=2822"},"modified":"2024-05-14T00:33:50","modified_gmt":"2024-05-13T22:33:50","slug":"cielab","status":"publish","type":"encyclopedia","link":"https:\/\/proof.proofen.de\/lv\/leksikons-3\/cielab\/","title":{"rendered":"CIELAB"},"content":{"rendered":"
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\n Nov\u0113rt\u0113jiet tagad<\/span>\n <\/div>\n <\/div>\n

CIELAB<\/a>-Kr\u0101su modelis<\/a> 1976. gad\u0101 nodibin\u0101ja Commission Internationale de l'Eclairage defi<\/a>un apraksta visas uztveram\u0101s kr\u0101sas. T\u0101 ir Hunter-LAB t\u0101l\u0101k\u0101 att\u012bst\u012bba. Kr\u0101su skala<\/a> no 1966. gada un matem\u0101tiskais kr\u0101su modelis, kur\u0101 objekta spektr\u0101l\u0101s \u012bpa\u0161\u012bbas un m\u016bsu vizu\u0101l\u0101s sist\u0113mas uztveres \u012bpa\u0161\u012bbas tiek savstarp\u0113ji kompens\u0113tas. CIELAB jeb sa\u012bsin\u0101jum\u0101 LAB l\u012bdz pat \u0161ai dienai ir nostiprin\u0101jies visur, kur ir nepiecie\u0161ams prec\u012bzs kr\u0101su apr\u0113\u0137ins, vai tas b\u016btu Kr\u0101su m\u0113r\u012b\u0161ana<\/a>formul\u0113jums vai kop\u012bg\u0101s oper\u0113t\u0101jsist\u0113m\u0101s: . Kr\u0101su p\u0101rvald\u012bba<\/a> parasti darbojas, izmantojot CIELAB.<\/p>\n

Gan Hunter L, a, b, gan CIE 1976 L*a*b* (CIELAB) balst\u0101s uz kr\u0101su pretinieku teoriju. \u0160\u012b teorija paredz, ka cilv\u0113ka acs receptori kr\u0101su uztver k\u0101 pretstatu p\u0101rus. LAB gad\u012bjum\u0101 tie ir tr\u012bs p\u0101ri:<\/p>\n

- L m\u0113roga: Gaisma pret tumsu. Mazs skaitlis (0-50) apz\u012bm\u0113 tumsu, bet liels skaitlis (51-100) - gai\u0161umu. 0 ir absol\u016bti melns, 100 - absol\u016bti balts.
\n- a-skal\u0101: Pozit\u012bvs skaitlis apz\u012bm\u0113 sarkanu kr\u0101su, bet negat\u012bvs - za\u013cu kr\u0101su.
\n- b skala: Pozit\u012bvs skaitlis apz\u012bm\u0113 dzeltenu kr\u0101su, bet negat\u012bvs skaitlis - zilu kr\u0101su.<\/p>\n

L v\u0113rt\u012bba nor\u0101da gaismas un tumsas attiec\u012bbu, a v\u0113rt\u012bba - diapazonu no sarkan\u0101s l\u012bdz za\u013cajai kr\u0101sai, bet b v\u0113rt\u012bba - diapazonu no dzelten\u0101s l\u012bdz zilajai kr\u0101sai. Visas tr\u012bs v\u0113rt\u012bbas kop\u0101 var piln\u012bb\u0101 raksturot objekta kr\u0101su.<\/p>","protected":false},"excerpt":{"rendered":"

Das CIELAB-Farbmodell wurde 1976 von der Commission Internationale de l\u2019Eclairage definiert und beschreibt alle wahrnehmbaren Farben. Es ist eine Weiterentwicklung der Hunter-LAB Farbskala aus dem Jahr 1966 und ein mathematisches Farbmodell, bei dem die spektralen Eigenschaften eines Objektes und die Wahrnehmungseigenschaften unseres Sehapparats miteinander verrechnet werden. CIELAB oder kurz: LAB hat sich bis heute \u00fcberall durchgesetzt, wo es um exakte Farbberechnung geht, sei es in der Farbmessung, -rezeptur oder in den g\u00e4ngigen Betriebssystemen: Das Farbmanagement funktioniert\u00a0\u00fcblicherweise\u00a0\u00fcber CIELAB. Hunter L, a, b und CIE 1976 L*a*b* (CIELAB) beruhen beide auf der … <\/p>\n

Las\u012bt vair\u0101k<\/a><\/p>","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","template":"","meta":{"inline_featured_image":false,"footnotes":""},"class_list":["post-2822","encyclopedia","type-encyclopedia","status-publish","hentry","no-featured-image-padding"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t