{"id":2907,"date":"2020-04-20T10:50:32","date_gmt":"2020-04-20T08:50:32","guid":{"rendered":"https:\/\/www.proof.de\/?post_type=encyclopedia&#038;p=2907"},"modified":"2025-11-12T00:54:34","modified_gmt":"2025-11-11T23:54:34","slug":"colorimetria-2","status":"publish","type":"encyclopedia","link":"https:\/\/blog.proofs.de\/pt\/lexikon\/farbmetrik\/","title":{"rendered":"Colorimetria"},"content":{"rendered":"<div class=\"kk-star-ratings kksr-auto kksr-align-right kksr-valign-top\" data-payload='{\"align\":\"right\",\"id\":\"2907\",\"slug\":\"default\",\"valign\":\"top\",\"ignore\":\"\",\"reference\":\"auto\",\"class\":\"\",\"count\":\"0\",\"legendonly\":\"\",\"readonly\":\"\",\"score\":\"0\",\"starsonly\":\"\",\"best\":\"5\",\"gap\":\"5\",\"greet\":\"Jetzt bewerten\",\"legend\":\"0\\\/5 - (0 votes)\",\"size\":\"24\",\"title\":\"Farbmetrik\",\"width\":\"0\",\"_legend\":\"{score}\\\/{best} - ({count} {votes})\",\"font_factor\":\"1.25\"}'>\n            \n<div class=\"kksr-stars\">\n    \n<div class=\"kksr-stars-inactive\">\n            <div class=\"kksr-star\" data-star=\"1\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"2\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"3\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"4\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"5\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n    <\/div>\n    \n<div class=\"kksr-stars-active\" style=\"width: 0px;\">\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n    <\/div>\n<\/div>\n                \n\n<div class=\"kksr-legend\" style=\"font-size: 19.2px;\">\n            <span class=\"kksr-muted\">Avalie agora<\/span>\n    <\/div>\n    <\/div>\n<p>A colorimetria, ou teoria da cor, \u00e9 a ci\u00eancia da cor. Na impress\u00e3o e <a href=\"https:\/\/blog.proofs.de\/pt\/lexikon\/proof\/\" target=\"_self\" title=\"Uma prova (correctamente: prova de contrato) \u00e9 um dispositivo de prova certificado ISO 12647-7 para a ind\u00fastria das artes gr\u00e1ficas. Uma prova simula o colorido da impress\u00e3o offset ou da impress\u00e3o de gravura a cores e juridicamente vinculativa dentro das estreitas toler\u00e2ncias da norma ISO.\" class=\"encyclopedia\">Comprova\u00e7\u00e3o<\/a>-O dom\u00ednio da cor \u00e9 essencialmente dedicado \u00e0 descri\u00e7\u00e3o e medi\u00e7\u00e3o das cores.<\/p>\n<p>Isto inclui:<\/p>\n<ul>\n<li>a percep\u00e7\u00e3o da cor pelo olho e pelo c\u00e9rebro humanos<\/li>\n<li>a origem da cor nos materiais<\/li>\n<li>a teoria da cor na arte<\/li>\n<li>a f\u00edsica da luz vis\u00edvel<\/li>\n<\/ul>\n<p>O que \u00e9 importante aqui \u00e9 a avalia\u00e7\u00e3o objetiva e mensur\u00e1vel e D<a href=\"https:\/\/blog.proofs.de\/pt\/lexikon\/efi\/\" target=\"_self\" title=\"Electronics For Imaging Inc., EFI para abreviar, \u00e9 uma empresa americana e fabricante de um dos principais sistemas de prova do mundo: EFI Colorproof XF, desde 2013: Fiery XF. A EFI \u00e9 um fornecedor de solu\u00e7\u00f5es para grandes sistemas de impress\u00e3o, RIPs e solu\u00e7\u00f5es de gest\u00e3o de cor como a prova.\" class=\"encyclopedia\">efi<\/a>ni\u00e7\u00e3o das val\u00eancias da cor (a perce\u00e7\u00e3o visual da cor).<\/p>\n<p>A colorimetria constitui a base para a <a href=\"https:\/\/blog.proofs.de\/pt\/lexikon\/farbmanagement\/\" target=\"_self\" title=\"O objectivo da gest\u00e3o de cores \u00e9 assegurar que as cores sejam reproduzidas da forma mais semelhante poss\u00edvel atrav\u00e9s dos v\u00e1rios dispositivos, tais como c\u00e2maras, scanners, monitores, laser, jacto de tinta, impressoras offset e muitos mais.\" class=\"encyclopedia\">Gest\u00e3o das cores<\/a> no sector da impress\u00e3o. O seu objetivo \u00e9 substituir a perce\u00e7\u00e3o subjectiva \u201ehumana\u201c da cor por dados objectivos e \u201enormalizados\u201c. Isto assegura que as cores s\u00e3o reproduzidas de forma consistente e reprodut\u00edvel, independentemente do dispositivo, do suporte e do processo.<\/p>\n<p>A colorimetria fornece as ferramentas e defini\u00e7\u00f5es necess\u00e1rias para comunicar claramente a informa\u00e7\u00e3o sobre a cor.<\/p>\n<p>No centro da colorimetria aplicada \u00e0 pr\u00e9-impress\u00e3o, por exemplo, est\u00e1 o conceito de espa\u00e7os de cor, em particular o <a href=\"https:\/\/blog.proofs.de\/pt\/lexikon\/cielab\/\" target=\"_self\" title=\"O modelo de cor CIELAB foi definido em 1976 pela Commission Internationale de l&#039;Eclairage e descreve todas as cores percept\u00edveis. \u00c9 um desenvolvimento da escala de cores Hunter-LAB de 1966 e um modelo matem\u00e1tico de cores no qual as propriedades espectrais de um objeto e as propriedades perceptivas do nosso sistema visual s\u00e3o compensadas entre si. O CIELAB, ou LAB, \u00e9 ainda hoje amplamente utilizado...\" class=\"encyclopedia\">CIELab<\/a>*-<a href=\"https:\/\/blog.proofs.de\/pt\/lexikon\/farbraum\/\" target=\"_self\" title=\"O espa\u00e7o de cor \u00e9 baseado num modelo de cor e \u00e9 a sua aplica\u00e7\u00e3o concreta a um m\u00e9todo de cor (impressora, ecr\u00e3, etc). Portanto, cont\u00e9m todas as cores que podem realmente ser representadas com este m\u00e9todo e os materiais correspondentes.\" class=\"encyclopedia\">Espa\u00e7o de cor<\/a>s. Funciona como uma refer\u00eancia independente do dispositivo<a href=\"https:\/\/blog.proofs.de\/pt\/lexikon\/zfa\/\" target=\"_self\" title='ZFA \u00e9 o &quot;Zentral Fachausschuss Berufsbildung Druck und Medien&quot;. Em comiss\u00f5es, a ZFA prepara os exames para designers de meios digitais e impressos, assim como para muitas outras profiss\u00f5es relacionadas com os meios de comunica\u00e7\u00e3o.' class=\"encyclopedia\">zfa<\/a>espa\u00e7o de cor. Em contraste com os espa\u00e7os de cor dependentes do dispositivo, tais como <a href=\"https:\/\/blog.proofs.de\/pt\/lexikon\/rgb\/\" target=\"_self\" title=\"RGB significa as cores vermelho, verde e azul. A vis\u00e3o da cor humana \u00e9 baseada nestas cores.\" class=\"encyclopedia\">RGB<\/a> (para monitores) ou <a href=\"https:\/\/blog.proofs.de\/pt\/lexikon\/cmyk\/\" target=\"_self\" title='CMYK significa as quatro cores de impress\u00e3o: ciano, magenta, amarelo (amarelo) e &quot;chave&quot; (por\u00e7\u00e3o preta ou preta).' class=\"encyclopedia\">CMYK<\/a> (para impress\u00e3o), que apenas descrevem a forma como as cores s\u00e3o produzidas, CIE<a href=\"https:\/\/blog.proofs.de\/pt\/lexikon\/lab\/\" target=\"_self\" title=\"CIELAB ou LAB \u00e9 um modelo matem\u00e1tico de cor que se estabeleceu onde quer que seja necess\u00e1rio um c\u00e1lculo exacto da cor. A gest\u00e3o da cor por computador funciona normalmente atrav\u00e9s do CIELAB.\" class=\"encyclopedia\">Laborat\u00f3rio<\/a> todas as cores que podem ser percepcionadas pelo ser humano. Com as coordenadas L* (luminosidade), a* (vermelho-verde) e b* (amarelo-azul), cada cor pode ser claramente identificada. Isto torna o LAB essencial para a transfer\u00eancia e tradu\u00e7\u00e3o sem perdas de dados de cor entre os \u201eparticipantes da cor\u201c - da c\u00e2mara para o monitor e da prova para a impressora.<\/p>\n<p>Uma aplica\u00e7\u00e3o central da colorimetria \u00e9 o c\u00e1lculo da <a href=\"https:\/\/blog.proofs.de\/pt\/lexikon\/farbabstand\/\" target=\"_self\" title=\"A dist\u00e2ncia medida (diferen\u00e7a de cor) entre duas cores. A localiza\u00e7\u00e3o das cores dos dois valores de cor s\u00e3o exibidos dentro de um sistema e a diferen\u00e7a \u00e9 dada em Delta-E.&nbsp;\" class=\"encyclopedia\">Dist\u00e2ncia das cores<\/a>s, que \u00e9 referido como DeltaE (\u0394E). A diferen\u00e7a de cor descreve a diferen\u00e7a entre duas cores com um n\u00famero. Em compara\u00e7\u00e3o com o DeltaE76, as f\u00f3rmulas modernas como o \u0394E00 (DeltaE2000) tamb\u00e9m t\u00eam em conta o facto de a perce\u00e7\u00e3o humana da cor n\u00e3o ser, infelizmente, linear, mas que a \u201emesma\u201c dist\u00e2ncia \u00e9 percebida de forma diferente em \u00e1reas diferentes. DeltaE00 permite uma avalia\u00e7\u00e3o exacta das diferen\u00e7as de cor.<\/p>\n<p>Na garantia de qualidade das oficinas de impress\u00e3o ou na avalia\u00e7\u00e3o de <a href=\"https:\/\/blog.proofs.de\/pt\/lexikon\/proofs\/\" target=\"_self\" title=\"No sector da impress\u00e3o, as provas (ou impress\u00f5es de provas) referem-se \u00e0 encaderna\u00e7\u00e3o a cores e \u00e0 simula\u00e7\u00e3o legalmente vinculativa de um resultado de impress\u00e3o para efeitos de controlo. A norma respons\u00e1vel pelas provas \u00e9 a ISO 12647-7:2016, ou seja, a revis\u00e3o actual de 2016.\" class=\"encyclopedia\">Provas<\/a> s\u00e3o estabelecidos v\u00e1rios limites de toler\u00e2ncia para \u0394E, de modo a que a produ\u00e7\u00e3o cumpra as especifica\u00e7\u00f5es e os clientes obtenham o resultado de cor esperado.<\/p>\n<p>A colorimetria pode tamb\u00e9m ser utilizada para <a href=\"https:\/\/blog.proofs.de\/pt\/lexikon\/metamerie\/\" target=\"_self\" title=\"O termo metamerismo refere-se ao efeito de que duas coisas podem parecer iguais sob uma luz, mas completamente diferentes sob outra luz.\" class=\"encyclopedia\">Metamerismo<\/a> captar e tratar objetivamente as cores. O metamerismo \u00e9 o efeito de duas cores parecerem id\u00eanticas sob uma determinada fonte de luz, mas diferentes sob outra. Ao utilizar dados de medi\u00e7\u00e3o espetral e condi\u00e7\u00f5es de ilumina\u00e7\u00e3o normalizadas, tais como <a href=\"https:\/\/blog.proofs.de\/pt\/lexikon\/d50\/\" target=\"_self\" title=\"D50 \u00e9 a luz padr\u00e3o da ind\u00fastria gr\u00e1fica. As provas s\u00f3 podem ser combinadas por cores sob a luz padr\u00e3o D50,\" class=\"encyclopedia\">D50<\/a> - a <a href=\"https:\/\/blog.proofs.de\/pt\/lexikon\/normlicht\/\" target=\"_self\" title=\"Luz padr\u00e3o refere-se a condi\u00e7\u00f5es de ilumina\u00e7\u00e3o definidas sob as quais os espectadores podem observar e avaliar uniformemente as impress\u00f5es ou objectos. O tipo de luz padr\u00e3o mais importante \u00e9 D50 para os impressores (temperatura de cor: 5.000 Kelvin).\" class=\"encyclopedia\">Luz padr\u00e3o<\/a> para a ind\u00fastria das artes gr\u00e1ficas - a colorimetria permite uma avalia\u00e7\u00e3o normalizada das cores. Isto \u00e9 particularmente importante na \u00e1rea da prova para garantir que a prova e a impress\u00e3o final coincidem nas mesmas condi\u00e7\u00f5es de visualiza\u00e7\u00e3o e que n\u00e3o ocorrem desvios de cor inesperados.<\/p>\n<p>Na colorimetria, o mais importante <a href=\"https:\/\/blog.proofs.de\/pt\/lexikon\/spektralfotometer\/\" target=\"_self\" title=\"Os espectrofot\u00f3metros s\u00e3o dispositivos de medi\u00e7\u00e3o de cor de alta qualidade que podem medir e descrever com precis\u00e3o qualquer cor. O dispositivo de medi\u00e7\u00e3o consegue isto atrav\u00e9s da ilumina\u00e7\u00e3o da superf\u00edcie de medi\u00e7\u00e3o com todo o espectro de luz vis\u00edvel. Os valores de reflect\u00e2ncia de certos comprimentos de onda juntos resultam no valor medido, que \u00e9 frequentemente emitido em laborat\u00f3rio (modo de medi\u00e7\u00e3o livremente seleccion\u00e1vel de M0 a M2). No entanto, os valores de medi\u00e7\u00e3o espectral tamb\u00e9m podem ser armazenados directamente. Os impressores de alta qualidade t\u00eam o seu pr\u00f3prio fot\u00f3metro espectral para verificar directamente a impress\u00e3o.\" class=\"encyclopedia\">Espectrofot\u00f3metro<\/a> para utiliza\u00e7\u00e3o. Estes dispositivos registam os valores reflectidos <a href=\"https:\/\/blog.proofs.de\/pt\/lexikon\/spektrum\/\" target=\"_self\" title='Em colorimetria, o termo &quot;espetro&quot; refere-se \u00e0 totalidade das cores na gama da luz vis\u00edvel. O espetro da luz vis\u00edvel vai de cerca de 380 nan\u00f3metros (nm) a 750 nm. Inclui as diferentes tonalidades que podemos perceber quando a luz \u00e9 refractada atrav\u00e9s de um prisma ou reflectida a partir de um meio \u00f3tico, como um ecr\u00e3....' class=\"encyclopedia\">Espectro<\/a> de uma cor, ou seja, medem a quantidade de luz reflectida em cada comprimento de onda vis\u00edvel. Com base nestas medi\u00e7\u00f5es espectrais <a href=\"https:\/\/blog.proofs.de\/pt\/lexikon\/icc\/\" target=\"_self\" title=\"O Cons\u00f3rcio Internacional de Cor, ICC, \u00e9 um comit\u00e9 internacional respons\u00e1vel pela normaliza\u00e7\u00e3o dos perfis de cor.&nbsp;\" class=\"encyclopedia\">ICC<\/a>-Perfis que descrevem o comportamento de cor dos dispositivos de entrada e sa\u00edda. Estes perfis traduzem o espa\u00e7o de cor do dispositivo de entrada, como uma c\u00e2mara, para o espa\u00e7o de cor do dispositivo de destino, por exemplo, uma impressora ou um processo de impress\u00e3o. Desta forma, garante a melhor fidelidade de cor poss\u00edvel ao longo de todo o processo de produ\u00e7\u00e3o.<\/p>","protected":false},"excerpt":{"rendered":"<p>A colorimetria, ou teoria da cor, \u00e9 a ci\u00eancia da cor.<br \/>\nA colorimetria tem como principal objetivo a avalia\u00e7\u00e3o e defini\u00e7\u00e3o objetiva e mensur\u00e1vel das val\u00eancias da cor (a perce\u00e7\u00e3o visual da cor), bem como das suas rela\u00e7\u00f5es entre si.<\/p>","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","template":"","meta":{"om_disable_all_campaigns":false,"inline_featured_image":false,"_monsterinsights_skip_tracking":false,"footnotes":""},"class_list":["post-2907","encyclopedia","type-encyclopedia","status-publish","hentry","no-featured-image-padding"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.1.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"Die Farbmetrik, oder Farblehre, ist die Wissenschaft von der Farbe. 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