Compression of High Dynamic Range Video
Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
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.
Place, publisher, year, edition, pages
2015. , 79 p.
Teknik, Video, HDR, High dynamic range, HEVC, Video coding, Color spaces
IdentifiersURN: urn:nbn:se:ltu:diva-48977Local ID: 66637b0d-e2fb-4292-8333-9446db3ad4faOAI: oai:DiVA.org:ltu-48977DiVA: diva2:1022322
Subject / course
Student thesis, at least 30 credits
Computer Science and Engineering, master's level
Validerat; 20151112 (global_studentproject_submitter)2016-10-042016-10-04Bibliographically approved