Učinkovitost metoda predviđanja unutar slike u koderima videosignala

master's thesis

• Title (english): Performance of intra-frame prediction methods in video encoders
• Author: Ivan Taradi
• Mentor: Sonja Grgić (mentor)
• Committee member: Sonja Grgić (član povjerenstva)
• Committee member: Marko Bosiljevac (član povjerenstva)
• Committee member: Dario Bojanjac (član povjerenstva)
• Granter: University of Zagreb; Faculty of Electrical Engineering and Computing; Zagreb
• Defense date and country: 2023-07-11, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Computing

Abstract

Video kodiranje je sažimanje videa uz očuvanje kvalitete čime se postiže bolji prijenos i manje zauzeće memorije. Kodiranjem se uklanjaju prostorne i vremenske redundancije u podacima. Tipični procesi u video koderima su predikcija, transformacija, kvantizacija i entropijsko kodiranje. Predikcija se dijeli na intra predikciju i inter predikciju. Intra predikcija radi predviđanje na temelju susjednih piksela unutar iste slike, a inter predikcija radi predikciju na temelju sličnih blokova iz prethodne ili buduće slike u nizu uzastopnih slika. U ovom radu se opisuju načini intra predikcije i daje se pregled modova koji se koriste za intra predikciju. Kao glavni fokus promatraju se H.264/AVC i H.265/HEVC standardi video kodera. Ispituje se utjecaj odabira modova na učinkovitost kodiranja slike, odnosno videa.

Abstract (english)

Video encoding is the compression of video while preserving quality. It is used to achieve better transmission and less memory usage. It removes spatial and temporal redundancies in videos. Typical processes in video encoder are prediction, transformation, quantization and entropy coding. Prediction is divided into intra prediction and inter prediction. Intra prediction makes predictions based on adjacent pixels within the same image and inter prediction makes predictions based on similar blocks from the previous or future image in a series of consecutive images. This paper describes intra prediction modes and provides an overview of the modes used for intra prediction. The main focus are the H.264/AVC and H.265/HEVC video encoding standards. It is examined how the choice of intra modes affects the efficiency of video encoding.

• Keywords: Video koder; H.264/AVC; H.265/HECV; intra predviđanje
• Keywords (english): Video coder; H.264/AVC; H.265/HECV; intra prediction
• Language: croatian
• URN:NBN: urn:nbn:hr:168:721239
• Study programme: Title: Computing; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra inženjer/inženjerka računarstva (magistar/magistra inženjer/inženjerka računarstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Closed access
• Created on: 2023-10-11 10:44:07