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Compression of High Dynamic Range Video
2015 (Engelska)Självständigt arbete på avancerad nivå (yrkesexamen), 20 poäng / 30 hpStudentuppsats (Examensarbete)
Abstract [en]

For a long time the main interest in the TV-industry has been in increasing the resolution of the video. However, we are getting to a point where there is little benefit in increasing it even further. New technologies are quickly rising as a result of this and High Dynamic Range (HDR) video is one of these. The goal of HDR video is to provide a greater range of luminosity to the end-consumer.~MPEG (Moving Picture Experts Group) wants to know if there is a potential for improvements to the HEVC (High Efficiency Video Coding) standard, specifically for HDR video, and in early 2015 the group issued a Call for Evidence (CfE) to find evidence whether improvements can be made to the existing video coding standard. This work presents the implementation and analysis of three different ideas for suggestions: bit shifting at the coding unit level, histogram-based color value mapping, and modifications to the existing Sample Adaptive Offset (SAO) in-loop filter in HEVC. Out of the three suggestions, the histogram-based color value mapping is shown to provide significant improvements to the coding efficiency, both objectively and subjectively. The thesis concludes the work with a discussion and possible directions for future work.

Ort, förlag, år, upplaga, sidor
2015. , s. 79
Nyckelord [en]
Technology
Nyckelord [sv]
Teknik, Video, HDR, High dynamic range, HEVC, Video coding, Color spaces
Identifikatorer
URN: urn:nbn:se:ltu:diva-48977Lokalt ID: 66637b0d-e2fb-4292-8333-9446db3ad4faOAI: oai:DiVA.org:ltu-48977DiVA, id: diva2:1022322
Externt samarbete
Ämne / kurs
Examensarbete, minst 30 hp
Utbildningsprogram
Civilingenjör, Datateknik
Handledare
Anmärkning
Validerat; 20151112 (global_studentproject_submitter)Tillgänglig från: 2016-10-04 Skapad: 2016-10-04Bibliografiskt granskad

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