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jfmcarreira
2018-08-22 17:02:06 +01:00
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010_Introduction/Introduction.tex
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@@ -1,7 +1,7 @@
\graphicspath{{010_Introduction}}
\glsreset{hevc}
\chapter{Introduction}
\chapter{Introduction \VERSION{1}}
\label{Chapter:Intro}
\section{Context and motivation}
@@ -63,7 +63,7 @@ In general, increased error robustness in video transmission can be jointly achi
The \ac{hevc} reference codec is continuously being improved and extended development by multiple proponents from around the world, also addressing the problem of error resilience and robust delivered transmission
Although the \ac{ec} methods have been developed during the past years for \ac{h264}~\cite{2DRecursiveRefinement2010} and recently for \ac{hevc}~\cite{HEVCMCBlockAug2013}, a combined and optimised approach between encoder and decoder is yet to be developed, which would improve the users’ \ac{qoe} by exploiting shared information between the encoder and the decoder sides.
\section{\HIGHLIGHT{Main objectives and contributions}}
\section{Main objectives and contributions}
@@ -89,7 +89,7 @@ The paradigm of error concealment are evaluated at the encoder side, as part of
%Finally, the ultimate goal of this research work is to strike a balance between the designed error resilience and error concealment techniques so as to meet a set of \ac{qos}/\ac{qoe} requirements.
%Since the ultimate quality judgement is made by end users, subjective tests will constitute a part of the research work in order to validate the objective gains reported as a result of the deployment of various proposed and implemented methods. Given the importance of the \ac{hevc} standard in the near future, the simulation scenarios will be defined based on practical service requirements, such as, bit rate allocation, transmission delay and required QoS.
\section{\HIGHLIGHT{Outline of this thesis}}
\section{Outline of this thesis}
This thesis is organised as follows. The current chapter introduces the context, motivation and objectives of this thesis, as well as the original contributions of this thesis.
@@ -114,7 +114,7 @@ A generalised saliency-weighted \ac{rd} optimisation is used and the residue be
%The simulation results show that the proposed method achieves consistent quality gains in comparison with other reference methods and previous works.
Chapter~\ref{Chapter:EndToEndRobustSystem} ... \HERE
Chapter~\ref{Chapter:EndToEndRobustSystem} proposes a novel adaptive error robustness method, in order to combine different techniques proposed in this thesis. At the encoder-side different video streams are generated with different levels compression efficiency and error robustness. Then, a pre-training \ac{nn} is used to predict which video stream will achieve the highest decoded video quality for a particular scenario. The selection is based on different input parameters which include information from the video signal, the coded stream and the transmission network.
Chapter~\ref{Chapter:Conclusions} concludes this dissertation and presents some suggestions for future work.