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
Neste artigo, propomos um algoritmo de ocultação de erros em duas etapas baseado em um esquema de codificação de vídeo com transformada wavelet discreta tridimensional resiliente a erros (DWT 3-D). O esquema proposto consiste em um codificador resiliente a erros que duplica os fluxos de bits de sub-banda mais baixos para quadros agrupados dispersivos e um decodificador de ocultação de erros. O método de ocultação de erros deste decodificador é decomposto em duas etapas, a primeira etapa é a substituição dos coeficientes errôneos na sub-banda mais baixa pelos coeficientes duplicados, e a segunda etapa é a interpolação dos coeficientes wavelet ausentes pelo erro quadrático médio mínimo (MMSE ) estimativa. O esquema proposto pode alcançar uma transmissão robusta em canais não confiáveis. Os resultados experimentais fornecem comparações de desempenho em termos de relação sinal-ruído de pico (PSNR) e demonstram desempenho aumentado em comparação com esquemas de ocultação de erros de última geração.
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Sunmi KIM, Hirokazu TANAKA, Takahiro OGAWA, Miki HASEYAMA, "Error-Resilient 3-D Wavelet Video Coding with Duplicated Lowest Sub-Band Coefficients and Two-Step Error Concealment Method" in IEICE TRANSACTIONS on Fundamentals,
vol. E93-A, no. 11, pp. 2173-2183, November 2010, doi: 10.1587/transfun.E93.A.2173.
Abstract: In this paper, we propose a two-step error concealment algorithm based on an error resilient three-dimensional discrete wavelet transform (3-D DWT) video coding scheme. The proposed scheme consists of an error-resilient encoder duplicating the lowest sub-band bit-streams for dispersive grouped frames and an error concealment decoder. The error concealment method of this decoder is decomposed of two steps, the first step is replacement of erroneous coefficients in the lowest sub-band by the duplicated coefficients, and the second step is interpolation of the missing wavelet coefficients by minimum mean square error (MMSE) estimation. The proposed scheme can achieve robust transmission over unreliable channels. Experimental results provide performance comparisons in terms of peak signal-to-noise ratio (PSNR) and demonstrate increased performances compared to state-of-the-art error concealment schemes.
URL: https://global.ieice.org/en_transactions/fundamentals/10.1587/transfun.E93.A.2173/_p
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@ARTICLE{e93-a_11_2173,
author={Sunmi KIM, Hirokazu TANAKA, Takahiro OGAWA, Miki HASEYAMA, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={Error-Resilient 3-D Wavelet Video Coding with Duplicated Lowest Sub-Band Coefficients and Two-Step Error Concealment Method},
year={2010},
volume={E93-A},
number={11},
pages={2173-2183},
abstract={In this paper, we propose a two-step error concealment algorithm based on an error resilient three-dimensional discrete wavelet transform (3-D DWT) video coding scheme. The proposed scheme consists of an error-resilient encoder duplicating the lowest sub-band bit-streams for dispersive grouped frames and an error concealment decoder. The error concealment method of this decoder is decomposed of two steps, the first step is replacement of erroneous coefficients in the lowest sub-band by the duplicated coefficients, and the second step is interpolation of the missing wavelet coefficients by minimum mean square error (MMSE) estimation. The proposed scheme can achieve robust transmission over unreliable channels. Experimental results provide performance comparisons in terms of peak signal-to-noise ratio (PSNR) and demonstrate increased performances compared to state-of-the-art error concealment schemes.},
keywords={},
doi={10.1587/transfun.E93.A.2173},
ISSN={1745-1337},
month={November},}
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TY - JOUR
TI - Error-Resilient 3-D Wavelet Video Coding with Duplicated Lowest Sub-Band Coefficients and Two-Step Error Concealment Method
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 2173
EP - 2183
AU - Sunmi KIM
AU - Hirokazu TANAKA
AU - Takahiro OGAWA
AU - Miki HASEYAMA
PY - 2010
DO - 10.1587/transfun.E93.A.2173
JO - IEICE TRANSACTIONS on Fundamentals
SN - 1745-1337
VL - E93-A
IS - 11
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - November 2010
AB - In this paper, we propose a two-step error concealment algorithm based on an error resilient three-dimensional discrete wavelet transform (3-D DWT) video coding scheme. The proposed scheme consists of an error-resilient encoder duplicating the lowest sub-band bit-streams for dispersive grouped frames and an error concealment decoder. The error concealment method of this decoder is decomposed of two steps, the first step is replacement of erroneous coefficients in the lowest sub-band by the duplicated coefficients, and the second step is interpolation of the missing wavelet coefficients by minimum mean square error (MMSE) estimation. The proposed scheme can achieve robust transmission over unreliable channels. Experimental results provide performance comparisons in terms of peak signal-to-noise ratio (PSNR) and demonstrate increased performances compared to state-of-the-art error concealment schemes.
ER -