\n<\/p>\n
Cambridge \u00dcniversitesi ile Facebook, Instagram ve WhatsApp’\u0131n ana \u015firketi Meta taraf\u0131ndan y\u00fcr\u00fct\u00fclen ara\u015ft\u0131rma, ultra HD televizyonlar\u0131n \u00fcreticilerin iddia etti\u011fi kadar y\u00fcksek g\u00f6r\u00fcnt\u00fc kalitesi sunmad\u0131\u011f\u0131n\u0131 ortaya koydu.<\/p>\n
Nature Communications dergisinde yay\u0131mlanan \u00e7al\u0131\u015fmada, ortalama b\u00fcy\u00fckl\u00fckteki bir oturma odas\u0131nda 4K ve 8K \u00e7\u00f6z\u00fcn\u00fcrl\u00fckl\u00fc televizyonlar\u0131n, benzer boyuttaki standart 2K ekranlara k\u0131yasla g\u00f6zle fark edilir bir keskinlik fark\u0131 yaratmad\u0131\u011f\u0131 belirlendi.<\/p>\n
Bilim insanlar\u0131, ultra y\u00fcksek \u00e7\u00f6z\u00fcn\u00fcrl\u00fckl\u00fc ekranlardaki ek piksellerin, insan g\u00f6z\u00fcn\u00fcn alg\u0131 s\u0131n\u0131rlar\u0131n\u0131 a\u015ft\u0131\u011f\u0131 sonucuna ula\u015ft\u0131.<\/p>\n
\u0130NSAN G\u00d6Z\u00dc TEKNOLOJ\u0130YE YET\u0130\u015eEM\u0130YOR<\/strong><\/p>\n The Guardian gazetesine konu\u015fan Cambridge \u00dcniversitesinden Dr. Maliha Ashraf, \u201cBelirli bir izleme mesafesinden sonra ekrana ka\u00e7 piksel eklerseniz ekleyin fark etmiyor. G\u00f6z bunu ay\u0131rt edemiyor, dolay\u0131s\u0131yla fazladan piksel israf anlam\u0131na geliyor\u201d ifadesini kulland\u0131. Genellikle 60 PPD olarak kabul edilen 20\/20 g\u00f6rme keskinli\u011finin aksine, ara\u015ft\u0131rmac\u0131lar \u00e7o\u011fu insan\u0131n bundan daha fazla detay\u0131 se\u00e7ebildi\u011fini saptad\u0131.<\/p>\n Dr. Ashraf, \u201cSadece 20\/20 g\u00f6r\u00fc\u015fe g\u00f6re ekran tasarlamak insan g\u00f6z\u00fcn\u00fcn ger\u00e7ek kapasitesini k\u00fc\u00e7\u00fcmsemek olur. Bu y\u00fczden insanlar\u0131n ay\u0131rt edebildi\u011fi ger\u00e7ek piksel s\u0131n\u0131r\u0131n\u0131 do\u011frudan \u00f6l\u00e7t\u00fck\u201d diye konu\u015ftu.<\/p>\n G\u00d6Z\u00dcN GER\u00c7EK P\u0130KSEL KAPAS\u0130TES\u0130 \u00d6L\u00c7\u00dcLD\u00dc<\/strong><\/p>\n Bilim insanlar\u0131, 27 in\u00e7lik 4K \u00e7\u00f6z\u00fcn\u00fcrl\u00fckl\u00fc bir monit\u00f6r\u00fc hareketli bir platforma yerle\u015ftirerek farkl\u0131 uzakl\u0131klardan testler yapt\u0131. Kat\u0131l\u0131mc\u0131lardan, \u00e7izgilerin bulundu\u011fu g\u00f6r\u00fcnt\u00fcy\u00fc se\u00e7meleri istendi. \u00c7izgiler art\u0131k ay\u0131rt edilemeyecek kadar inceldi\u011finde, bu nokta g\u00f6z\u00fcn s\u0131n\u0131r\u0131 olarak kaydedildi.<\/p>\n Yap\u0131lan testler sonucunda, insan g\u00f6z\u00fcn\u00fcn gri tonlarda ortalama 94 PPD, k\u0131rm\u0131z\u0131-ye\u015fil desenlerde 89 PPD ve sar\u0131-mor desenlerde 53 PPD \u00e7\u00f6z\u00fcn\u00fcrl\u00fck ay\u0131rt edebildi\u011fi g\u00f6r\u00fcld\u00fc.<\/p>\n Yaz\u0131lar\u0131n yer ald\u0131\u011f\u0131 benzer bir deneyde de, harf boyutu bu s\u0131n\u0131r\u0131n alt\u0131na indi\u011finde kat\u0131l\u0131mc\u0131lar\u0131n art\u0131k keskinlik fark\u0131n\u0131 g\u00f6remedi\u011fi anla\u015f\u0131ld\u0131.<\/p>\n TELEV\u0130ZYONUNUZUN \u00c7\u00d6Z\u00dcN\u00dcRL\u00dc\u011e\u00dc YETERL\u0130 M\u0130?<\/strong><\/p>\n Ara\u015ft\u0131rmac\u0131lar, elde ettikleri verilerle ekran boyutu ile izleme mesafesi aras\u0131ndaki ili\u015fkiyi g\u00f6steren bir tablo haz\u0131rlad\u0131.<\/p>\n Ayr\u0131ca, kullan\u0131c\u0131lar\u0131n kendi televizyonlar\u0131n\u0131n bu s\u0131n\u0131r\u0131 a\u015f\u0131p a\u015fmad\u0131\u011f\u0131n\u0131 test edebilece\u011fi \u00e7evrim i\u00e7i bir hesaplay\u0131c\u0131 da geli\u015ftirildi.<\/p>\n Dr. Ashraf, \u201cE\u011fer televizyonunuz bu hesaplamada belirtilen aral\u0131klardaysa, daha y\u00fcksek \u00e7\u00f6z\u00fcn\u00fcrl\u00fc\u011fe \u00e7\u0131kman\u0131z g\u00f6rsel bir fayda sa\u011flamaz\u201d de\u011ferlendirmesini yapt\u0131.<\/p>\n Ashraf, durumu \u015fu \u00f6rnekle a\u00e7\u0131klad\u0131:<\/p>\n \u201c\u00d6rne\u011fin, 44 in\u00e7lik 4K televizyonu yakla\u015f\u0131k 2,5 metre mesafeden izleyen biri i\u00e7in g\u00f6r\u00fcnt\u00fc zaten g\u00f6z\u00fcn ay\u0131rt edebilece\u011finden daha detayl\u0131. Ayn\u0131 boyuttaki bir 8K model, daha keskin g\u00f6r\u00fcnmeyecektir.\u201d<\/p>\n Ara\u015ft\u0131rma, tipik izleme mesafelerinde ekran \u00e7\u00f6z\u00fcn\u00fcrl\u00fc\u011f\u00fcn\u00fc s\u00fcrekli art\u0131rman\u0131n \u00e7o\u011fu kullan\u0131c\u0131 a\u00e7\u0131s\u0131ndan s\u0131n\u0131rl\u0131 bir avantaj sundu\u011funu ortaya koydu.<\/p>\n Dr. Ashraf\u2019a g\u00f6re bu sonu\u00e7, \u201cinsan alg\u0131s\u0131n\u0131n s\u0131n\u0131r\u0131n\u0131n teknolojiyle kesi\u015fti\u011fi noktay\u0131\u201d g\u00f6steriyor.<\/p>\n<\/div>\n
Ara\u015ft\u0131rma ekibi, bu \u00e7al\u0131\u015fmayla insan g\u00f6z\u00fcn\u00fcn ger\u00e7ekte ka\u00e7 pikseli ay\u0131rt edebildi\u011fini tespit etmeyi ama\u00e7lad\u0131.<\/p>\n
Normal ya da d\u00fczeltilmi\u015f g\u00f6rme yetisine sahip 18 kat\u0131l\u0131mc\u0131ya, biri tek piksel geni\u015fli\u011finde renkli dikey \u00e7izgiler, di\u011feri ise d\u00fcz gri arka plan i\u00e7eren iki g\u00f6r\u00fcnt\u00fc g\u00f6sterildi.<\/p>\n