Detail publikačního výsledku

Subjective Quality Assessment of the Impact of Buffer Size in Fine-Grain Parallel Video Encoding

MONTERO, P.; POLÁK, L.; TAIBO, J.; KRATOCHVÍL, T.

Originální název

Subjective Quality Assessment of the Impact of Buffer Size in Fine-Grain Parallel Video Encoding

Anglický název

Subjective Quality Assessment of the Impact of Buffer Size in Fine-Grain Parallel Video Encoding

Druh

Článek WoS

Originální abstrakt

Fine-Grain parallelism is essential for real-time video encoding performance. This usually implies setting a fixed buffer size for each encoded block. The choice of this parameter is critical for both performance and hardware cost. In this paper we analyze the impact of buffer size on image subjective quality, and its relation with other encoding parameters. We explore the consequences on visual quality, when minimizing buffer size to the point of causing the discard of quantized coefficients for highest frequencies. Finally, we propose some guidelines for the choice of buffer size, that has proven to be heavily dependent, in addition to other parameters, on the type of sequence being encoded. These guidelines are useful for the design of efficient realtime encoders, both hardware and software.

Anglický abstrakt

Fine-Grain parallelism is essential for real-time video encoding performance. This usually implies setting a fixed buffer size for each encoded block. The choice of this parameter is critical for both performance and hardware cost. In this paper we analyze the impact of buffer size on image subjective quality, and its relation with other encoding parameters. We explore the consequences on visual quality, when minimizing buffer size to the point of causing the discard of quantized coefficients for highest frequencies. Finally, we propose some guidelines for the choice of buffer size, that has proven to be heavily dependent, in addition to other parameters, on the type of sequence being encoded. These guidelines are useful for the design of efficient realtime encoders, both hardware and software.

Klíčová slova

Parallel MPEG-2, ITU-R BT.500, subjective test, video quality, ACR, MOS, PSNR

Klíčová slova v angličtině

Parallel MPEG-2, ITU-R BT.500, subjective test, video quality, ACR, MOS, PSNR

Autoři

MONTERO, P.; POLÁK, L.; TAIBO, J.; KRATOCHVÍL, T.

Rok RIV

2013

Vydáno

07.12.2012

Místo

Brno

ISSN

1210-2512

Periodikum

Radioengineering

Svazek

21

Číslo

4

Stát

Česká republika

Strany od

1226

Strany do

1235

Strany počet

10

BibTex

@article{BUT94962,
  author="Pablo {Montero} and Ladislav {Polák} and Javier {Taibo} and Tomáš {Kratochvíl}",
  title="Subjective Quality Assessment of the Impact of Buffer Size in Fine-Grain Parallel Video Encoding",
  journal="Radioengineering",
  year="2012",
  volume="21",
  number="4",
  pages="1226--1235",
  issn="1210-2512"
}