
The UHD Alliance encourages the development of standardized and coordinated Ultra high definition La Ultra HD es algo que va m s all de la resoluci n para prestar especial atenci n a cuestiones clave para conseguir el efecto wow' en el espectador como son el espacio de color o el rango din mico , asegura en la 4K Summit el presidente de la alianza, Michael Zink.
Michael Zink, presidente de la UHD Alliance, ha expuesto en la 4K Summit 2017 el trabajo de la alianza para fomentar el desarrollo normalizado y coordinado de la Ultra Alta Definici n. La Ultra HD es algo que va m s all de la resoluci n para prestar especial atenci n a cuestiones clave para conseguir el efecto wow' en el espectador como son el espacio de color o el rango din mico
Desde la alianza, integrada por medio centenar de empresas entre fabricantes, broadcasters, estudios de producci n , est n determinando los par metros t cnicos que condicionar n la experiencia en el consumidor partiendo precisamente de estudios de que permiten conocer sus h bitos cuando ven Ultra Alta Definici n como el tipo de dispositivo que eligen, c mo acceden a los contenidos e, incluso, en qu ambiente lum nico los consumen.
Desde la UHD Alliance recomiendan producir m sters en 4K de resoluci n (3840 2160) a 10 bit y con una paleta de colores de BT2020, adem s de HDR SMPTE ST2084 EOTFF. Para su visualizaci n, recomiendan un m nimo pantallas de 1.000 nits o m s de 540 nits cuando se utilizan tecnolog as de alto contraste con m s de 90% de colores P3.
En el caso del m vil, tablet o laptop los patrones que marca la UHD Alliance son una resoluci n de 60 p xeles/degree, 10 bit y 90% de gamut de color P3, con rango din mico de .0005-540 nits.
Aquellos equipos que respeten todas estas especificaciones contar n con el logo de homologaci n de la UHD Alliance. Queremos garantizar con este programa de homologaci n que los consumidores accedan a contenidos 4K en cualquier dispositivos al m ximo nivel de calidad , asegur Zink.
Por otro lado, llam la atenci n sobre la necesidad de conservar los metadatos creados por los productores a lo largo de toda la cadena de distribuci n de contenidos.
Otro aspecto que abord el presidente de la UHD Alliance es el de la interoperabilidad asegurando que como industria debemos garantizar que el usuario disfrutar de la mejor experiencia posible . Para analizar los problemas con los que se encuentran los espectadores en relaci n a los dispositivos, perif ricos, cableado la alianza lleva a cabo un interesante programa de escucha en redes sociales que le permiten conocer de que se habla en las redes cuando se hace referencia al 4K o UHD. Resulta curioso comprobar, c mo un 25% de los comentarios son negativos en relaci n con incompatibilidades e interoperabilidad , coment . Para atajar, esto la alianza ha creado un grupo en interoperabilidad para detectar los problemas, su origen y estudiar c mo abordarlos.
La alianza ha detectado tres categor as de problemas: calidad de imagen (los usuarios no saben si la resoluci n es correcta o si el contraste es el correcto), uso de dispositivos perif ricos (problemas de cableado, audio, o descenso de resoluci n) y calidad de los contenidos.
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