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".
Copyrights notice
The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
DVC(분산 비디오 코딩)는 새롭게 떠오르는 비디오 코딩 접근 방식으로, 복잡도가 낮은 인코더를 구현할 수 있는 유연성으로 인해 특히 매력적입니다. 이 기능은 다양한 비디오 센서 기반 애플리케이션 시나리오에서 매우 효과적으로 활용될 수 있습니다. 그러나 DVC는 여전히 개발 과정에 있으며 현재 사용 가능한 코덱 구현은 수많은 가상 모델과 가정을 기반으로 합니다. DVC에서는 실제 비디오 통신에서 압축된 페이로드(패리티 비트 스트림)에 대한 노이즈 및 페이딩의 영향과 그에 따른 수정된 채널 모델 시나리오가 문헌에서 논의되지 않았습니다. 본 논문에서는 터보 코딩 기반 DVC의 위 문제에 대한 솔루션이 터보 디코딩을 위한 MAP(Maximum a-posteriori) 알고리즘에 대한 새로운 이중 채널 모델을 통합하는 방법에 대해 논의합니다. 서로 다른 GOP(Group of Picture) 크기에서 AWGN 및 무선 채널에 대한 시뮬레이션을 통해 제안된 알고리즘이 기존 디코딩 알고리즘에 비해 전송률 왜곡 성능을 향상시키는 것을 보여줍니다. 또한 H.264/AVC IPIP 코덱(v10.1/baseline 프로필)보다 성능이 뛰어납니다. 특히 채널의 낮은 SNR(신호 대 잡음비) 수준에서 DVC를 비디오 통신을 위한 실행 가능하고 효율적인 옵션으로 사용할 수 있습니다.
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Rajitha WEERAKKODY, Anil FERNANDO, Ahmet M. KONDOZ, "Modifying the Turbo Decoder for DVC over Wireless Channels" in IEICE TRANSACTIONS on Fundamentals,
vol. E92-A, no. 8, pp. 2009-2016, August 2009, doi: 10.1587/transfun.E92.A.2009.
Abstract: Distributed Video Coding (DVC) is an emerging video coding approach, particularly attractive due to its flexibility to implement low complex encoders. This feature could be very effectively utilized in a number of video sensor based application scenarios. However, DVC is still in the process of development and currently available codec implementations are based on a number of hypothetical models and assumptions. In DVC, the effects of noise and fading on the compressed payload (parity bit stream) in real video communications and the resultant modified channel model scenario have not been discussed in literature. In this paper, a solution to the above problem in turbo coding based DVC is discussed incorporating a novel dual channel model for the maximum a-posteriori (MAP) algorithm for turbo decoding. The simulations for AWGN and wireless channels at different group of picture (GOP) sizes show that the proposed algorithm improves the rate distortion performance compared to the existing decoding algorithm. It also outperforms the H.264/AVC I-P-I-P codec (v10.1/baseline profile); particularly at low Signal to Noise Ratio (SNR) levels of the channel, thus enabling DVC as a viable and efficient option for video communications.
URL: https://global.ieice.org/en_transactions/fundamentals/10.1587/transfun.E92.A.2009/_p
부
@ARTICLE{e92-a_8_2009,
author={Rajitha WEERAKKODY, Anil FERNANDO, Ahmet M. KONDOZ, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={Modifying the Turbo Decoder for DVC over Wireless Channels},
year={2009},
volume={E92-A},
number={8},
pages={2009-2016},
abstract={Distributed Video Coding (DVC) is an emerging video coding approach, particularly attractive due to its flexibility to implement low complex encoders. This feature could be very effectively utilized in a number of video sensor based application scenarios. However, DVC is still in the process of development and currently available codec implementations are based on a number of hypothetical models and assumptions. In DVC, the effects of noise and fading on the compressed payload (parity bit stream) in real video communications and the resultant modified channel model scenario have not been discussed in literature. In this paper, a solution to the above problem in turbo coding based DVC is discussed incorporating a novel dual channel model for the maximum a-posteriori (MAP) algorithm for turbo decoding. The simulations for AWGN and wireless channels at different group of picture (GOP) sizes show that the proposed algorithm improves the rate distortion performance compared to the existing decoding algorithm. It also outperforms the H.264/AVC I-P-I-P codec (v10.1/baseline profile); particularly at low Signal to Noise Ratio (SNR) levels of the channel, thus enabling DVC as a viable and efficient option for video communications.},
keywords={},
doi={10.1587/transfun.E92.A.2009},
ISSN={1745-1337},
month={August},}
부
TY - JOUR
TI - Modifying the Turbo Decoder for DVC over Wireless Channels
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 2009
EP - 2016
AU - Rajitha WEERAKKODY
AU - Anil FERNANDO
AU - Ahmet M. KONDOZ
PY - 2009
DO - 10.1587/transfun.E92.A.2009
JO - IEICE TRANSACTIONS on Fundamentals
SN - 1745-1337
VL - E92-A
IS - 8
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - August 2009
AB - Distributed Video Coding (DVC) is an emerging video coding approach, particularly attractive due to its flexibility to implement low complex encoders. This feature could be very effectively utilized in a number of video sensor based application scenarios. However, DVC is still in the process of development and currently available codec implementations are based on a number of hypothetical models and assumptions. In DVC, the effects of noise and fading on the compressed payload (parity bit stream) in real video communications and the resultant modified channel model scenario have not been discussed in literature. In this paper, a solution to the above problem in turbo coding based DVC is discussed incorporating a novel dual channel model for the maximum a-posteriori (MAP) algorithm for turbo decoding. The simulations for AWGN and wireless channels at different group of picture (GOP) sizes show that the proposed algorithm improves the rate distortion performance compared to the existing decoding algorithm. It also outperforms the H.264/AVC I-P-I-P codec (v10.1/baseline profile); particularly at low Signal to Noise Ratio (SNR) levels of the channel, thus enabling DVC as a viable and efficient option for video communications.
ER -