Kodiranje videosekvenci nastalih analiziranjem s proredom uporabom kodera HEVC

master's thesis

• Title (english): Coding of Interlaced Video Sequences Using HEVC Encoder
• Author: Dino Hunjek
• Mentor: Sonja Grgić (mentor)
• Committee member: Sonja Grgić (predsjednik povjerenstva)
• Committee member: Tomislav Kos (član povjerenstva)
• Committee member: Jelena Božek (član povjerenstva)
• Granter: University of Zagreb; Faculty of Electrical Engineering and Computing; Zagreb
• Defense date and country: 2016-07-12, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Computing

Abstract

Nova generacija kodera videosignala utemeljena na postupku kodiranja HEVC (High-Efficiency Video Coding) omogućava vrlo visoke stupnjeve kompresije uz zadovoljavajuću kvalitetu slike. Koder HEVC je prilagođen kodiranju videosignala koji je nastao progresivnim analiziranjem iako omogućava i kodiranje videa nastalog analiziranjem s proredom gdje se slika dijeli na dvije poluslike. U ovome radu ispitane zu značajke kodera HEVC pri kodiranju formata HDTV (High Definition Television) 1080i koji ima frekvenciju izmjene poluslika 50/60 Hz.
U radu su definirani formati signala HDTV i objašnjena je razlika između analiziranja s proredom i progresivnog analiziranja. Temeljne značajke postupka kodiranja HEVC su detaljno opisane, kao i novi alati u odnosu na prethodnu generaciju kodera (H.264/AVC). Analizirani su elementi kodera koji nisu dobro prilagođeni kodiranju videosignala nastalog analiziranjem s proredom. Ispitani su utjecaji kodiranja HEVC na kvalitetu slike za ispitne sekvence 1080i HDTV (Mobile Calendar, Stockholm). Usporedbom analiziranja slike s proredom H.264/AVC i HEVC norme, korištenjem optimalnih postavki kodera za 1080i formati jednake brzine prijenosa, utvrđeno je da stariji, H.264/AVC koder, pokazuje bolje rezultate.

Abstract (english)

The new generation of video encoder based on the coding method HEVC (High-Efficiency Video Coding) allows very high levels of compression with a satisfactory image quality. HEVC encoder is adapted to encode a videosignal which was created using progressive scanning method, but he even allows the encoding of video which was created using interlaced scanning where the image is divided into two semi-pictures. This paper examined the features of HEVC encoder when encoding a format HDTV (High Definition Television) 1080i which has a frequency changes of semi-images 50/60 Hz.
This work has defined HDTV signal formats and explained difference between interlaced scanning and progressive scanning. The fundamental features of the HEVC process coding are described in detail, as well as new tools compared with the previous generation encoder (H.264 / AVC). We analyzed the elements of the coders which are not well adapted for the coding of videosignals generated by analyzing using interlaced scanning. The influences of HEVC coding on the image quality of test sequences 1080i HDTV (Mobile Calendar, Stockholm) have been tested. Comparing two different scanning methods of H.264 / AVC and HEVC standard, using the optimal settings for 1080i formats with the same bit rate, it was found that older, H.264 / AVC encoder, is showing better results.

• Keywords: HEVC; AVC; kodiranje; sekvence; analiziranje; prored; progresivno
• Keywords (english): HEVC; AVC; coding; sequences; analyzing; interlace; progressive
• Language: croatian
• URN:NBN: urn:nbn:hr:168:354030
• 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: 2018-02-06 09:13:59