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Analysis of 3D viewing experience viasubjective evaluation methods
KTH, School of Computer Science and Communication (CSC).
2013 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesisAlternative title
Analys av 3D-visningsupplevelse viasubjektiva utvärderingsmetoder (Swedish)
Abstract [en]

3D video technology has in recent years become immensely popular given the success 3D movies

have had at the cinemas. More and more people have therefore requested to be able to experience

this 3D sensation beyond the cinematic screens, and at the comfort of one’s home in front of the TV.

Leading television manufacturers have responded by producing modern television sets capable of

rendering 3D video, and several TV channels around the world have started to broadcast programs

and movies in 3D. Since it is not yet clear what constitutes the overall visual experience of 3DTV, the

purpose of this master

’s thesis project is to explore through subjective testing methods the relevance

that some aspects might have concerning the 3DTV viewing experience. Another aim is to advance

the standardization work regarding subjective evaluation methods for stereoscopic 3D videos. Key 3D

terminology and concepts are presented, as well as subjective evaluation methodologies.

Stereoscopic 3D video sequences were produced; a customization of a rating-capable video player

was made; 3D viewing-and-voting experiments with test subjects were carried out; different

attributes were incorporated into the experiments and evaluated such as video quality, visual

discomfort, sense of presence and viewing distance; experiment data were collected and analyzed.

The experiment results indicated that viewers in general showed an inclination to vote similarly for

the different attributes that were examined. This in turn showed that video sequences with the

characteristics presented in the experiments, mostly coding related distortions, could be assessed

with subjective evaluation methods focusing solely on one rating scale concerning the general video

quality, which would give a good understanding of the 3D video quality experience.

Abstract [sv]

3D-videoteknologi har de senaste åren blivit oerhört populärt i och med framgångarna som 3D-filmer

har rönt på biograferna. Fler och fler människor har därmed efterfrågat att kunna erfara denna 3Dupplevelse

bortom bioduken, och inne i hemmets lugna vrå framför TV:n. Ledande TV-tillverkare har

i sin tur svarat med att producera moderna TV-apparater kapabla att kunna återge video i 3D, och

flera TV-kanaler runt om i världen har även börjat sända program och filmer i 3D. Eftersom det ännu

inte är helt klarlagt vad som utgör den samlade visuella upplevelsen av 3DTV, är syftet med detta

examensarbete att genom subjektiva testmetoder utforska relevansen som vissa aspekter kan ha när

det gäller 3DTV-upplevelsen. Ett annat syfte är att främja standardiseringsarbetet med avseende på

subjektiva utvärderingsmetoder för stereoskopiska 3D-sekvenser. Nyckelterminologi och begrepp

inom 3D presenteras, liksom subjektiva utvärderingsmetoder. Stereoskopiska 3D-videosekvenser

producerades; en modifikation av en röstningskapabel videospelare gjordes; 3D visnings- och

röstningsexperiment med testpersoner genomfördes; olika attribut infördes i experimenten och

evaluerades såsom videokvalitet, visuellt obehag, närvarokänsla och visningsavstånd; data

insamlades och analyserades. Resultaten av experimenten indikerade att tittarna i allmänhet visade

en benägenhet att rösta på samma sätt för de olika attribut som granskats. Detta visade i sin tur att

videosekvenser med de egenskaper som presenterades i experimenten, mestadels kodningsrelaterade

distorsioner, kunde evalueras via subjektiva utvärderingsmetoder som enbart fokuserar

på en skala gällande den allmänna videokvaliteten, som därmed skulle ge en god förståelse för 3Dvideoupplevelsen.

Place, publisher, year, edition, pages
2013.
National Category
Computer Science
Identifiers
URN: urn:nbn:se:kth:diva-142041OAI: oai:DiVA.org:kth-142041DiVA: diva2:699680
Educational program
Master of Science in Engineering - Computer Science and Technology
Supervisors
Examiners
Available from: 2014-03-12 Created: 2014-02-28 Last updated: 2014-12-10Bibliographically approved

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