20.500.12556/DKUM-43227 A/D-PRETVORBA VIDEOSIGNALA IN OSNOVE VIRTUALNE SCENOGRAFIJE A/D CONVERSION OF VIDEO SIGNAL AND VIRTUAL SCENOGRAPHY Tako kot vsa področja tehnike je tudi televizija v zadnjih letih doživela bliskovit razvoj. V zadnjih dveh letih (2010-2013) smo na Televiziji Slovenija (v nadaljevanju TV Slovenija) prešli iz analogne tehnologije na digitalno. V nalogi želim narediti pregled razvoja televizije od začetka, v črno-beli tehniki, prek barvne televizije do digitalne. V prvem poglavju sem naredil kratek zgodovinski pregled razvoja televizijske tehnike, v drugem pa opisal analizo in sintezo slike. V naslednjih poglavjih sem predstavil A/D (analogno-digitalna pretvorba) videosignala z različnimi načini vzorčenja, ki se uporabljajo v televizijski tehniki, ter digitalizacijo videosignala. Digitalni televizijski signal nam ponuja več možnosti za različne televizijske sisteme. V 6. poglavju so predstavljeni sistemi, ki jih določajo priporočila, ki jih je izdal EBU (European Broadcasting Union). Prav tako so v tem poglavju predstavljeni vmesniki za SDTV- in HDTV-signal ter paralelno serijski pretvornik s koderjem. V poglavju Virtualna scenografija sem predstavil osnove postopka chroma key, ki je temelj virtualne scenografije. Če so slike ozadij stične, ga je razmeroma preprosto narediti tudi v analognem okolju. Težave se pojavijo pri ozadjih, ki se premikajo skladno s premikanjem kamer, saj moramo ozadja renderirati 50-krat na sekundo. V zadnjem poglavju sem omenil sistem SideDeck, ki nam ponuja interaktivne vizualne komunikacije v 2D-, 3D- in HD-tehnologiji. Pri tem sistemu potekajo vse komunikacije v realnem času, z akterji, ki so na različnih geografskih lokacijah. Like all other technical fields, television has had swift development recently. Television Slovenia (hereafter TV Slovenia) has transited from analogue to digital technology for the last two years (2010-2013). In my diploma work, I wish to make a review of television development since its beginnings in black-and-white technique through colour TV to digital TV. In the first chapter, I made a short history review of TV technique development, and in the second, I described the analysis and synthesis of a picture. In the following chapters A/D (analogue-digital) conversion of video signal with various ways of sampling that are used in television technique as well as digitalisation of video signal are presented. Digital TV signal offers us different possibilities for various TV systems. In Chapter 6 the systems are presented that are set by the EBU recommendations. In the same chapter, interfaces for SDTV and HDTV signals and a parallel serial converter with a coder are presented. The chapter Virtual scenography presents the basics of the chroma key procedure, which is the foundations of virtual scenography. If the background pictures are connected, we can make virtual scenography relatively easily in analogue environments as well. Problems occur in backgrounds, which move according with the movement of cameras, since backgrounds must be rendered 50 times per second. In the last chapter, the SideDeck system is mentioned which offers us interactive visual communications in 2D, 3D and HD technology. In this system, all communications are in real time, with actors who are in different geographic locations. orad ultimatte virtualna scenografija A/D-pretvorba videosignala blue spill. orad ultimatte virtual scenography A/D conversion of video signal blue spill. true true false [A. Koščak] Slovenski jezik Angleški jezik Diplomsko delo 2013-12-10 21:23:55 2014-03-26 08:42:26 2022-05-09 03:06:25 2021-04-28 03:29:21 2013 0 Maribor 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 621.39(043.2) 17706518 URN:SI:UM:DK:A58MDCHM VS_Koscak_Andrej_2014.pdf VS_Koscak_Andrej_2014.pdf 1 DF3DEDE70DACED244AEE6C10EFC9551F 29bf61767b43d1c240d8c4a731a3e07fbf0fbb41a4ee1bb8f3309fef9e687b20 a506b3f0-7c0a-11eb-bb7a-00155d0001ca https://dk.um.si/Dokument.php?lang=slv&id=61860 Fakulteta za elektrotehniko, računalništvo in informatiko 0 0 0