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Tese
Modelagem da perda de qualidade de videos H.264 em redes sem fio considerando perdas de PSNR e de frames
Multimedia applications have been growing in recent years; new consumptions like online games, video conference, video on demand and IP telephony are some of these. However, there is a greater prominence in the search related to videos and streaming, currently in high resolutions and mostly traff...
Autor principal: | CARMONA, João Victor Costa |
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Grau: | Tese |
Idioma: | por |
Publicado em: |
Universidade Federal do Pará
2019
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Assuntos: | |
Acesso em linha: |
http://repositorio.ufpa.br/jspui/handle/2011/11929 |
Resumo: |
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Multimedia applications have been growing in recent years; new consumptions
like online games, video conference, video on demand and IP telephony are
some of these. However, there is a greater prominence in the search related to
videos and streaming, currently in high resolutions and mostly traffic over wireless
networks, mainly due to the proliferation of mobile devices and significant increase
of access networks, which make it more comfortable. Providing this information
is easy. Thus, as an immediate consequence of this type of flow, there is a need
for investments in techniques and mechanisms that provide the end user with the
desired quality and satisfaction in the face of high definition content. This work
aims to perform the modeling of video quality loss by analyzing their performance
in various resolutions, specifically standards in HD and UHD, at 720p, 1080p and
2160p. In this sense, applying a correlation investigation between the metrics extracted
from the videos, using Pearson’s correlation coefficient, and fundamentals
of the area in question. Also proposing equations for quality loss modeling, based
on analysis of metrics associated with packet loss, in which at the end of the study
and according to notes made throughout the text, we used for the general modeling
equation, the parameters of Loss of PSNR and Loss of Total Frames. The result
obtained shows maximum values of RMSE and Standard Deviation of 0.793 dB and
0.810 dB, respectively, making the developed model very good for the tested video
set and its resolutions. |