{"id":1466,"date":"2012-12-03T18:06:17","date_gmt":"2012-12-03T16:06:17","guid":{"rendered":"http:\/\/www.sitola.cz\/wordpress\/?p=1466"},"modified":"2012-12-03T18:07:59","modified_gmt":"2012-12-03T16:07:59","slug":"cesti-vedci-predvedli-8k-prenos-na-workshopu-global-lambdagrid","status":"publish","type":"post","link":"https:\/\/www.sitola.cz\/wordpress\/2012\/12\/03\/cesti-vedci-predvedli-8k-prenos-na-workshopu-global-lambdagrid\/","title":{"rendered":"\u010ce\u0161t\u00ed v\u011bdci p\u0159edvedli 8K p\u0159enos na workshopu Global LambdaGrid"},"content":{"rendered":"

V\u00fdzkumn\u00ed pracovn\u00edci sdru\u017een\u00ed CESNET z\u00a0brn\u011bnsk\u00e9 laborato\u0159e SITOLA p\u0159edstavili technologii pro s\u00ed\u0165ov\u00fd p\u0159enos digit\u00e1ln\u00edho videa v\u00a08K\u00a0rozli\u0161en\u00ed. Prezentace se konala 11.\u00a0\u0159\u00edjna na 12.\u00a0ro\u010dn\u00edku Global LambdaGrid workshopu v\u00a0Chicagu, kter\u00fd po\u0159\u00e1dalo sdru\u017een\u00ed Global Lambda Integrated Facility (GLIF). P\u0159edveden\u00e1 technologie umo\u017e\u0148uje streaming videa v\u00a0kvalit\u011b, kter\u00e1 se rovn\u00e1 16n\u00e1sobku rozli\u0161en\u00ed b\u011b\u017en\u00e9ho videa ve form\u00e1tu Full-HD. Na rozd\u00edl od tradi\u010dn\u00edch m\u00e9di\u00ed pod\u00e1v\u00e1 obraz v\u00a0rozli\u0161en\u00ed, je\u017e se vyrovn\u00e1 schopnostem lidsk\u00e9ho zraku. Datov\u00e9 toky pot\u0159ebn\u00e9 pro p\u0159enos v\u0161ak maj\u00ed mnohem v\u011bt\u0161\u00ed objem, ne\u017e jak\u00fd zvl\u00e1daj\u00ed dne\u0161n\u00ed po\u010d\u00edta\u010dov\u00e9 s\u00edt\u011b. Tento probl\u00e9m \u0159e\u0161\u00ed odborn\u00edci z\u00a0laborato\u0159e SITOLA v\u00fdvojem nov\u00fdch mo\u017enost\u00ed komprese a\u00a0zpracov\u00e1n\u00ed obrazu pomoc\u00ed grafick\u00fdch procesor\u016f a\u00a0vysp\u011bl\u00fdch algoritm\u016f pro distribuci obrazu v\u00a0po\u010d\u00edta\u010dov\u00fdch s\u00edt\u00edch. Praktick\u00fdm v\u00fdstupem tohoto v\u00fdzkumu, p\u0159edstaven\u00fdm na setk\u00e1n\u00ed GLIF, je open source n\u00e1stroj UltraGrid.<\/p>\n

\"[scheme<\/a><\/p>\n

Pracovn\u00edci laborato\u0159e SITOLA na workshopu GLIF streamovali film o\u00a0rozli\u0161en\u00ed\u00a08K z\u00a0v\u00fdzkumn\u00e9ho pracovi\u0161t\u011b International Center for Advanced Internet Research (iCAIR) na Northwestern University v\u00a0Chicagu do laborato\u0159e SITOLA v\u00a0Brn\u011b a\u00a0na samotn\u00e9 p\u0159edv\u00e1d\u011bc\u00ed m\u00edsto v\u00a0laborato\u0159i Electronic Visualization Laboratory (EVL) na University of Illinois v\u00a0Chicagu (viz sch\u00e9ma). \u00da\u010dastn\u00edci v\u00a0Brn\u011b i\u00a0Chicagu mohli streaming interaktivn\u011b ovl\u00e1dat. Technologie UltraGrid p\u0159i uk\u00e1zce pou\u017eila kompresi JPEG s\u00a0\u0161\u00ed\u0159kou p\u00e1sma 2\u00a0Gb\/s, kter\u00e1 byla na p\u0159ij\u00edmac\u00ed stran\u011b pr\u016fb\u011b\u017en\u011b p\u0159ekomprimov\u00e1v\u00e1na do kompresn\u00edho form\u00e1tu DXT5-YCoCg s\u00a0\u0161\u00ed\u0159kou p\u00e1sma 6,5\u00a0GB\/s. Pro zobrazen\u00ed byla pou\u017eita vizualiza\u010dn\u00ed plocha slo\u017een\u00e1 z\u00a0obrazovek o\u00a0vysok\u00e9m rozli\u0161en\u00ed a\u00a0speci\u00e1ln\u00ed middleware SAGE laborato\u0159e EVL, kter\u00fd je s\u00a0technologi\u00ed UltraGrid interoperabiln\u00ed.<\/p>\n

V sou\u010dasn\u00e9 dob\u011b lze t\u011bchto technologi\u00ed vyu\u017e\u00edvat ve specializovan\u00fdch prostor\u00e1ch, t\u0159eba na konferenc\u00edch, a\u00a0ve vysp\u011bl\u00fdch v\u011bdeck\u00fdch aplikac\u00edch, nap\u0159\u00edklad p\u0159i v\u00fdcviku medik\u016f, av\u0161ak v\u00a0budoucnu budou takov\u00e9to technologie dostupn\u00e9 i\u00a0spot\u0159ebitel\u016fm. Vzhledem k\u00a0omezen\u00e9mu rozli\u0161en\u00ed lidsk\u00e9ho zraku se technologie 8K, neboli ultra-high-definition video, moment\u00e1ln\u011b pova\u017euje za posledn\u00ed krok ve v\u00fdvoji pro televizn\u00ed a\u00a0kinematografick\u00e9 aplikace. 8K\u00a0standard p\u0159edvedly spole\u010dnosti NHK a\u00a0BBC na Letn\u00edch olympijsk\u00fdch hr\u00e1ch\u00a02012 v\u00a0Lond\u00fdn\u011b, kde se pro p\u0159enos z\u00a0vybran\u00fdch stadion\u016f vyu\u017e\u00edval zak\u00e1zkov\u00fd hardware a\u00a0s\u00edt\u011b. Form\u00e1t je nyn\u00ed standardizovan\u00fd a\u00a0jeho uplatn\u011bn\u00ed v\u00a0b\u011b\u017en\u00e9 produkci se o\u010dek\u00e1v\u00e1 kolem roku\u00a02020.<\/p>\n

P\u0159edstaven\u00ed t\u00e9to \u010desk\u00e9 p\u0159enosov\u00e9 technologie za\u0161t\u00edtila tuzemsk\u00e1 n\u00e1rodn\u00ed s\u00ed\u0165 pro v\u00fdzkum a\u00a0vzd\u011bl\u00e1v\u00e1n\u00ed CESNET a\u00a0d\u00e1le International Center for Advanced Internet Research na Northwestern University v\u00a0Chicagu, Electronic Visualization Laboratory na University of Illinois v\u00a0Chicagu a\u00a0mezin\u00e1rodn\u00ed propojovac\u00ed uzel StarLight. Film v\u00a0rozli\u0161en\u00ed\u00a08K byl vyroben v\u00a0National Center for Supercomputing na University of Illinois at Urbana-Champaign pro klenut\u00fd strop Adlerova planet\u00e1ria.<\/p>\n

\"\"<\/a> \"\"<\/a> \"\"<\/a> \"\"<\/a> \"\"<\/a> \"\"<\/a> \"\"<\/a><\/p>\n

http:\/\/www.cesnet.cz\/doc\/tisk\/2012\/tz121017.html<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

V\u00fdzkumn\u00ed pracovn\u00edci sdru\u017een\u00ed CESNET z\u00a0brn\u011bnsk\u00e9 laborato\u0159e SITOLA p\u0159edstavili technologii pro s\u00ed\u0165ov\u00fd p\u0159enos digit\u00e1ln\u00edho videa v\u00a08K\u00a0rozli\u0161en\u00ed. Prezentace se konala 11.\u00a0\u0159\u00edjna na 12.\u00a0ro\u010dn\u00edku Global LambdaGrid workshopu v\u00a0Chicagu, kter\u00fd po\u0159\u00e1dalo sdru\u017een\u00ed Global Lambda Integrated Facility (GLIF). P\u0159edveden\u00e1 technologie umo\u017e\u0148uje streaming videa v\u00a0kvalit\u011b, kter\u00e1 se rovn\u00e1 16n\u00e1sobku rozli\u0161en\u00ed b\u011b\u017en\u00e9ho videa ve form\u00e1tu Full-HD. Na rozd\u00edl od tradi\u010dn\u00edch m\u00e9di\u00ed pod\u00e1v\u00e1 […]<\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"_links":{"self":[{"href":"https:\/\/www.sitola.cz\/wordpress\/wp-json\/wp\/v2\/posts\/1466"}],"collection":[{"href":"https:\/\/www.sitola.cz\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.sitola.cz\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.sitola.cz\/wordpress\/wp-json\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/www.sitola.cz\/wordpress\/wp-json\/wp\/v2\/comments?post=1466"}],"version-history":[{"count":3,"href":"https:\/\/www.sitola.cz\/wordpress\/wp-json\/wp\/v2\/posts\/1466\/revisions"}],"predecessor-version":[{"id":1469,"href":"https:\/\/www.sitola.cz\/wordpress\/wp-json\/wp\/v2\/posts\/1466\/revisions\/1469"}],"wp:attachment":[{"href":"https:\/\/www.sitola.cz\/wordpress\/wp-json\/wp\/v2\/media?parent=1466"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.sitola.cz\/wordpress\/wp-json\/wp\/v2\/categories?post=1466"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.sitola.cz\/wordpress\/wp-json\/wp\/v2\/tags?post=1466"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}