The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. ex. Some numerals are expressed as "XNUMX".
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The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
Com a aplicação onipresente da Internet e das redes sem fio, a comunicação por vídeo H.264 se torna cada vez mais comum. No entanto, devido à codificação preditiva de alta eficiência e à codificação de entropia de comprimento variável, é mais sensível a erros de transmissão. O atual esquema de ocultação de erros (EC), que utiliza as correlações espaciais e temporais para ocultar a região corrompida, produz artefatos de limite insatisfeitos. Neste artigo, primeiro propomos um esquema de ocultação de erro de tamanho de bloco variável (VBSEC) inspirado na estimativa de movimento de tamanho de bloco variável (VBSME) em H.264. Este esquema fornece quatro modos EC e quatro partições de subbloco. Todo o macrobloco corrompido (MB) será dividido em tamanho de bloco variável de forma adaptativa de acordo com o movimento real. Vetores de movimento (MV) mais precisos serão previstos para cada subbloco. Em seguida, o esquema de refinamento MV (MVR) é proposto para refinar o MV do subbloco heterogêneo, utilizando o algoritmo de busca em três etapas (TSS) de forma adaptativa. Tanto o VBSEC quanto o MVR são baseados em nosso algoritmo direcional de correspondência de limites espaço-temporais (DSTBMA). Ao utilizar esses esquemas, podemos reconstruir o MB corrompido no interquadro com mais precisão. Os resultados experimentais mostram que nosso esquema proposto pode obter melhor qualidade de CE objetiva e subjetiva, respectivamente, em comparação com o algoritmo de correspondência de limites (BMA) adotado no software de referência JM11.0, algoritmo de correspondência de limites espaço-temporais (STBMA) e outros métodos de CE comparáveis .
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Lei WANG, Jun WANG, Satoshi GOTO, Takeshi IKENAGA, "Variable Block Size Motion Vector Retrieval Schemes for H.264 Inter Frame Error Concealment" in IEICE TRANSACTIONS on Fundamentals,
vol. E91-A, no. 10, pp. 2945-2953, October 2008, doi: 10.1093/ietfec/e91-a.10.2945.
Abstract: With the ubiquitous application of Internet and wireless networks, H.264 video communication becomes more and more common. However, due to the high-efficiently predictive coding and the variable length entropy coding, it is more sensitive to transmission errors. The current error concealment (EC) scheme, which utilizes the spatial and temporal correlations to conceal the corrupted region, produces unsatisfied boundary artifacts. In this paper, first we propose variable block size error concealment (VBSEC) scheme inspired by variable block size motion estimation (VBSME) in H.264. This scheme provides four EC modes and four sub-block partitions. The whole corrupted macro-block (MB) will be divided into variable block size adaptively according to the actual motion. More precise motion vectors (MV) will be predicted for each sub-block. Then MV refinement (MVR) scheme is proposed to refine the MV of the heterogeneous sub-block by utilizing three step search (TSS) algorithm adaptively. Both VBSEC and MVR are based on our directional spatio-temporal boundary matching algorithm (DSTBMA). By utilizing these schemes, we can reconstruct the corrupted MB in the inter frame more accurately. The experimental results show that our proposed scheme can obtain better objective and subjective EC quality, respectively compared with the boundary matching algorithm (BMA) adopted in the JM11.0 reference software, spatio-temporal boundary matching algorithm (STBMA) and other comparable EC methods.
URL: https://global.ieice.org/en_transactions/fundamentals/10.1093/ietfec/e91-a.10.2945/_p
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@ARTICLE{e91-a_10_2945,
author={Lei WANG, Jun WANG, Satoshi GOTO, Takeshi IKENAGA, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={Variable Block Size Motion Vector Retrieval Schemes for H.264 Inter Frame Error Concealment},
year={2008},
volume={E91-A},
number={10},
pages={2945-2953},
abstract={With the ubiquitous application of Internet and wireless networks, H.264 video communication becomes more and more common. However, due to the high-efficiently predictive coding and the variable length entropy coding, it is more sensitive to transmission errors. The current error concealment (EC) scheme, which utilizes the spatial and temporal correlations to conceal the corrupted region, produces unsatisfied boundary artifacts. In this paper, first we propose variable block size error concealment (VBSEC) scheme inspired by variable block size motion estimation (VBSME) in H.264. This scheme provides four EC modes and four sub-block partitions. The whole corrupted macro-block (MB) will be divided into variable block size adaptively according to the actual motion. More precise motion vectors (MV) will be predicted for each sub-block. Then MV refinement (MVR) scheme is proposed to refine the MV of the heterogeneous sub-block by utilizing three step search (TSS) algorithm adaptively. Both VBSEC and MVR are based on our directional spatio-temporal boundary matching algorithm (DSTBMA). By utilizing these schemes, we can reconstruct the corrupted MB in the inter frame more accurately. The experimental results show that our proposed scheme can obtain better objective and subjective EC quality, respectively compared with the boundary matching algorithm (BMA) adopted in the JM11.0 reference software, spatio-temporal boundary matching algorithm (STBMA) and other comparable EC methods.},
keywords={},
doi={10.1093/ietfec/e91-a.10.2945},
ISSN={1745-1337},
month={October},}
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TY - JOUR
TI - Variable Block Size Motion Vector Retrieval Schemes for H.264 Inter Frame Error Concealment
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 2945
EP - 2953
AU - Lei WANG
AU - Jun WANG
AU - Satoshi GOTO
AU - Takeshi IKENAGA
PY - 2008
DO - 10.1093/ietfec/e91-a.10.2945
JO - IEICE TRANSACTIONS on Fundamentals
SN - 1745-1337
VL - E91-A
IS - 10
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - October 2008
AB - With the ubiquitous application of Internet and wireless networks, H.264 video communication becomes more and more common. However, due to the high-efficiently predictive coding and the variable length entropy coding, it is more sensitive to transmission errors. The current error concealment (EC) scheme, which utilizes the spatial and temporal correlations to conceal the corrupted region, produces unsatisfied boundary artifacts. In this paper, first we propose variable block size error concealment (VBSEC) scheme inspired by variable block size motion estimation (VBSME) in H.264. This scheme provides four EC modes and four sub-block partitions. The whole corrupted macro-block (MB) will be divided into variable block size adaptively according to the actual motion. More precise motion vectors (MV) will be predicted for each sub-block. Then MV refinement (MVR) scheme is proposed to refine the MV of the heterogeneous sub-block by utilizing three step search (TSS) algorithm adaptively. Both VBSEC and MVR are based on our directional spatio-temporal boundary matching algorithm (DSTBMA). By utilizing these schemes, we can reconstruct the corrupted MB in the inter frame more accurately. The experimental results show that our proposed scheme can obtain better objective and subjective EC quality, respectively compared with the boundary matching algorithm (BMA) adopted in the JM11.0 reference software, spatio-temporal boundary matching algorithm (STBMA) and other comparable EC methods.
ER -