{"id":1052,"date":"2014-09-30T01:09:34","date_gmt":"2014-09-29T23:09:34","guid":{"rendered":"http:\/\/www.proof.de\/?p=1052"},"modified":"2020-05-08T13:19:18","modified_gmt":"2020-05-08T11:19:18","slug":"reprodukce-anaglyfickych-obrazku-a-carovych-kreseb","status":"publish","type":"post","link":"https:\/\/www.proof.de\/cs\/reproduktion-von-anaglyphen-bildern-und-strichzeichnungen\/","title":{"rendered":"Reprodukce anaglyfick\u00fdch obr\u00e1zk\u016f a liniov\u00fdch kreseb"},"content":{"rendered":"
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\n Hodnotit nyn\u00ed<\/span>\n <\/div>\n <\/div>\n

Ji\u017e p\u0159ed n\u011bkolika t\u00fddny k n\u00e1m dorazila neobvykl\u00e1 \u017e\u00e1dost: Hudebn\u00edk a za\u010d\u00ednaj\u00edc\u00ed student um\u011bn\u00ed Tobias Weh z Osnabr\u00fccku experimentoval s \u010d\u00e1rov\u00fdmi kresbami na po\u010d\u00edta\u010di. Anaglyf<\/a>en a dos\u00e1hl s n\u00edm velmi dobr\u00fdch v\u00fdsledk\u016f na monitoru. Vytvo\u0159il p\u0159ekr\u00fdvaj\u00edc\u00ed se \u010d\u00e1rov\u00e9 kresby, kter\u00e9 pak p\u0159i pohledu lev\u00fdm okem vytv\u00e1\u0159ely jin\u00fd obraz ne\u017e p\u0159i pohledu prav\u00fdm okem. Ot\u00e1zkou bylo, zda to bylo zp\u016fsobeno vysok\u00fdm Barevn\u00e1 \u0161k\u00e1la<\/a> o D\u016fkazy<\/a>yst\u00e9my by mohly b\u00fdt reprodukov\u00e1ny l\u00e9pe ne\u017e na jednoduch\u00e9 dom\u00e1c\u00ed inkoustov\u00e9 tisk\u00e1rn\u011b.<\/p>\n

Proto\u017ee takov\u00e9 ot\u00e1zky jsou samoz\u0159ejm\u011b na prvn\u00ed pohled velmi zaj\u00edmav\u00e9, byli jsme rychle p\u0159ipraveni pana Weha v jeho pr\u00e1ci podpo\u0159it. Abychom se v t\u00e9to v\u011bci zorientovali, zm\u011b\u0159ili jsme spektra p\u0159en\u00e1\u0161en\u00e1 komer\u010dn\u011b dostupn\u00fdmi anaglyfick\u00fdmi skly pro ob\u011b f\u00f3lie pomoc\u00ed p\u0159\u00edstroje i1 Pro 2 a BabelColor Color Translator & Analyzer.<\/p>\n

\"Anaglyfick\u00e1<\/a>Vlastn\u011b velmi uspokojiv\u00fd v\u00fdsledek. V\u00fdb\u011brem dvou barev jako inkoust\u016f ve spektr\u00e1ln\u00edm rozsahu 450 a\u017e 500 nanometr\u016f pro modrou a 650 a\u017e 700 nanometr\u016f pro \u010dervenou by m\u011blo b\u00fdt mo\u017en\u00e9 dos\u00e1hnout pom\u011brn\u011b dobr\u00e9ho v\u00fdsledku. Prvn\u00edm n\u00e1padem bylo vz\u00edt hodnoty nam\u011b\u0159en\u00e9 programem BabelColor. LAB<\/a> p\u0159\u00edslu\u0161n\u00fdch f\u00f3li\u00ed, aby se na tisku objevila p\u0159\u00edslu\u0161n\u00e1 \u010derven\u00e1 a azurov\u00e1 barva. To v\u0161ak bohu\u017eel ve skute\u010dnosti nefunguje; nam\u011b\u0159en\u00e9 vyti\u0161t\u011bn\u00e9 barvy spektr\u00e1ln\u011b v\u016fbec neodpov\u00eddaly po\u017eadovan\u00e9 barv\u011b.<\/p>\n

\"Anaglyph_pressure_of_the_measured_LAB_values\"<\/a>Pokra\u010dovali jsme tedy v experimentech a na\u0161li dv\u011b barvy, kter\u00e9 by skute\u010dn\u011b m\u011bly velmi dob\u0159e spektr\u00e1ln\u011b ladit s propou\u0161t\u011bn\u00fdmi spektry br\u00fdl\u00ed.<\/p>\n

\"Anaglyfick\u00fd<\/a>Ale i zde byl v\u00fdsledek vizu\u00e1ln\u00ed kontroly zdrcuj\u00edc\u00ed. Trvale p\u0159evl\u00e1dal siln\u00fd duch v obou barv\u00e1ch, jasn\u00e9 odd\u011blen\u00ed barev nebylo mo\u017en\u00e9. Dokonce i pohled p\u0159es pr\u016fsvitky anaglyfick\u00fdch br\u00fdl\u00ed na r\u016fzn\u00fdch Pantone<\/a>...-fandov\u00e9, kte\u0159\u00ed se sna\u017eili naj\u00edt co nejpodobn\u011bj\u0161\u00ed barvu pomoc\u00ed vizu\u00e1ln\u00edho v\u00fdb\u011bru barev, nevedli k \u017e\u00e1dn\u00e9mu v\u00fdsledku. V \u010derven\u00e9 barv\u011b br\u00fdle fungovaly docela dob\u0159e, v azurov\u00e9 se \u017e\u00e1dn\u00e1 z barevn\u00fdch skvrn Pantone ani nep\u0159ibl\u00ed\u017eila tomu, aby zmizela p\u0159ed lidsk\u00fdm okem.<\/p>\n

\"Pohled<\/a> \"Pohled<\/a>Bylo tak\u00e9 \u00fa\u017easn\u00e9 pozorovat, \u017ee neonov\u00e9 barvy Pantone, jako je Pantone 811 C, poskytuj\u00ed viditeln\u011b jasn\u011bj\u0161\u00ed barevn\u00e9 v\u00fdsledky pro oko a dokonce i pro fotoapar\u00e1t ne\u017e \u010dist\u011b b\u00edl\u00fd pap\u00edr. Dva obr\u00e1zky v\u00fd\u0161e jsou sn\u00edmky fotoapar\u00e1tu iPhone p\u0159es dv\u011b filtra\u010dn\u00ed f\u00f3lie anaglyfick\u00fdch br\u00fdl\u00ed. V \u010derven\u00e9 oblasti je jasn\u011b vid\u011bt, \u017ee n\u011bkter\u00e9 barvy Pantone p\u0159es f\u00f3lii zcela miz\u00ed, zat\u00edmco v modr\u00e9 jsou v\u0161echny barevn\u00e9 pruhy Pantone pln\u011b viditeln\u00e9.<\/p>\n

Jako jedin\u00e9 pragmatick\u00e9 \u0159e\u0161en\u00ed jsme nakonec vyvinuli kompromis: v\u00fdrazn\u011b jsme zesv\u011btlili \u010dervenou a azurovou barvu, abychom zabr\u00e1nili duch\u016fm, a pozad\u00ed pap\u00edru jsme m\u00edsto b\u00edl\u00e9 obarvili na sv\u011btle \u0161edou. T\u00edm jsme minimalizovali duchy, zejm\u00e9na v azurov\u00e9 oblasti, tak\u017ee bylo dosa\u017eeno po\u017eadovan\u00e9ho vizu\u00e1ln\u00edho efektu anaglyfick\u00e9ho obrazu.<\/p>\n

Ani po intenzivn\u00edm p\u00e1tr\u00e1n\u00ed na internetu se n\u00e1m nepoda\u0159ilo zjistit jin\u00fd nebo lep\u0161\u00ed v\u00fdsledek. V r\u016fzn\u00fdch \u010dl\u00e1nc\u00edch Francouze Erica Duboise je dilema nast\u00edn\u011bno docela dob\u0159e, ale jeho v\u00fdsledky n\u00e1m s na\u0161\u00edm probl\u00e9mem reprezentace lini\u00ed p\u0159\u00edli\u0161 nepomohly.<\/p>\n

N\u011bkolik d\u016fle\u017eit\u00fdch odkaz\u016f na t\u00e9ma anaglyfick\u00e9ho tisku, na kter\u00e9 jsme narazili b\u011bhem na\u0161eho v\u00fdzkumu:<\/p>\n

http:\/\/www.site.uottawa.ca\/~edubois\/anaglyph\/<\/p>\n

https:\/\/forums.adobe.com\/thread\/377398<\/p>\n

http:\/\/en.wikipedia.org\/wiki\/Anaglyph_3D<\/p>\n

Tobias Weh se ve f\u00f3ru o typografii tak\u00e9 ptal na empirick\u00e9 hodnoty.<\/p>\n

http:\/\/www.typografie.info\/3\/topic\/31883-anaglyphe-bilder-drucken-rot-grün-3d\/<\/p>\n

Ani zde v\u0161ak nebyly nalezeny \u017e\u00e1dn\u00e9 dal\u0161\u00ed n\u00e1znaky lep\u0161\u00edho p\u0159\u00edstupu.<\/p>\n

Z\u00e1v\u011br: Zd\u00e1 se, \u017ee anaglyfick\u00e1 oblast funguje na obrazovce velmi dob\u0159e. To je podpo\u0159eno velk\u00fdm mno\u017estv\u00edm publikac\u00ed elektronick\u00fdch knih Kindle, kter\u00e9 se prod\u00e1vaj\u00ed za m\u00e1lo pen\u011bz na Amazonu. Zde anaglyfn\u00ed efekt funguje opravdu dob\u0159e, kvalitn\u00ed monitor nen\u00ed nutn\u00fd. Tento kvalitn\u00ed v\u00fdsledek v\u0161ak nelze reprodukovat v tisku.<\/p>\n

Knihy v ti\u0161t\u011bn\u00e9 podob\u011b, kter\u00e9 jsou v sou\u010dasn\u00e9 dob\u011b na trhu k dispozici s anaglyfick\u00fdm zobrazen\u00edm, jsou p\u0159ev\u00e1\u017en\u011b pln\u00e9 historick\u00fdch stereografick\u00fdch obr\u00e1zk\u016f postaven\u00fdch na souvisl\u00e9m dvoubarevn\u00e9m, a tedy \u0161ed\u011b vypadaj\u00edc\u00edm pozad\u00ed. To m\u00e1 pravd\u011bpodobn\u011b dv\u011b v\u00fdhody: Dvoubarevn\u00e1 \u0161ed\u00e1 barva minimalizuje duchy a u historick\u00fdch obr\u00e1zk\u016f je n\u00e1\u0161 pr\u00e1h tolerance jednodu\u0161e vy\u0161\u0161\u00ed ne\u017e u modern\u00edch fotografi\u00ed nebo dokonce \u010d\u00e1rov\u00fdch kreseb.<\/p>\n

Pokud m\u00e1te n\u011bjak\u00e9 n\u00e1pady, jak vytvo\u0159it anaglyfick\u00fd obraz bez duch\u016f pomoc\u00ed modern\u00edch tiskov\u00fdch syst\u00e9m\u016f, nev\u00e1hejte n\u00e1s kontaktovat. T\u011b\u0161\u00edme se na dal\u0161\u00ed p\u0159\u00edsp\u011bvky a jakoukoli zp\u011btnou vazbu k na\u0161im my\u0161lenk\u00e1m.<\/p>","protected":false},"excerpt":{"rendered":"

Ji\u017e p\u0159ed n\u011bkolika t\u00fddny jsme obdr\u017eeli neobvykl\u00fd dotaz: hudebn\u00edk a budouc\u00ed student um\u011bn\u00ed Tobias Weh z Osnabr\u00fccku experimentoval s liniov\u00fdmi kresbami na b\u00e1zi anaglyf\u016f a dos\u00e1hl s nimi na monitoru velmi dobr\u00fdch v\u00fdsledk\u016f. Vytvo\u0159il p\u0159ekr\u00fdvaj\u00edc\u00ed se kresby, kter\u00e9 p\u0159i pohledu lev\u00fdm okem poskytovaly jin\u00fd obraz ne\u017e p\u0159i pohledu prav\u00fdm okem. Ot\u00e1zkou bylo, zda by se to dalo l\u00e9pe reprodukovat s vysok\u00fdm barevn\u00fdm rozsahem proofovac\u00edho syst\u00e9mu ne\u017e s jednoduchou dom\u00e1c\u00ed inkoustovou tisk\u00e1rnou. Jeliko\u017e jsou takov\u00e9 ot\u00e1zky na prvn\u00ed pohled samoz\u0159ejm\u011b velmi zaj\u00edmav\u00e9, byli jsme rychle p\u0159ipraveni pomoci panu Wehovi s ... <\/p>\n

P\u0159e\u010dt\u011bte si v\u00edce<\/a><\/p>","protected":false},"author":2,"featured_media":1053,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[1,441,25,7],"tags":[376,377,379,378,380,230,382,381],"class_list":["post-1052","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-allgemein","category-layout-tipps-und-tricks","category-licht-und-normlicht","category-proof-wissen","tag-anaglyph","tag-anaglyphen","tag-anaglyphen-drucken","tag-anaglyphenbild","tag-babelcolor","tag-lab","tag-spektren","tag-spektrum","generate-columns","tablet-grid-50","mobile-grid-100","grid-parent","grid-50","no-featured-image-padding","resize-featured-image"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.proof.de\/cs\/wp-json\/wp\/v2\/posts\/1052","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.proof.de\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.proof.de\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.proof.de\/cs\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.proof.de\/cs\/wp-json\/wp\/v2\/comments?post=1052"}],"version-history":[{"count":10,"href":"https:\/\/www.proof.de\/cs\/wp-json\/wp\/v2\/posts\/1052\/revisions"}],"predecessor-version":[{"id":3927,"href":"https:\/\/www.proof.de\/cs\/wp-json\/wp\/v2\/posts\/1052\/revisions\/3927"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.proof.de\/cs\/wp-json\/wp\/v2\/media\/1053"}],"wp:attachment":[{"href":"https:\/\/www.proof.de\/cs\/wp-json\/wp\/v2\/media?parent=1052"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.proof.de\/cs\/wp-json\/wp\/v2\/categories?post=1052"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.proof.de\/cs\/wp-json\/wp\/v2\/tags?post=1052"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}