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Very Low Bitrate Video Coding And Mpeg-4: Still A Good Relation

F. Pereira
1996 Zenodo  
This paper intends to analyse the current role of very low bitrate audio-visual (VLBAV) applications and very low bitrate video coding in the context of MPEG-4.  ...  Since H.263 is largely recognised has a very good coding scheme for very low bitrates, there seems to be no doubts that, from the coding efficiency point of view, very low bitrate applications are well  ... 
doi:10.5281/zenodo.36396 fatcat:moesrwv7ivf6xokkkcboawf36i

誤り耐性を強化した超低ビットレート動画像符号化方式 : 放送方式
Error Resilient Very-Low-Bitrate Video Coding

Yasuko Matsumura, Toshihisa Nakai
1994 ITE Technical Report  
We propose a new error . resilient verylowbitrate video coding scheme .  ...  This scheme has the carefully designed syntax so that it can utilize a selrsy 皿 chronizing Property of the variable length code .  ...  ITU − T SGIs Experts Group on Very Low Bitrate Visual Telephony : " Video Codec Test Model ,丁厳 N2 ,} . [ 6 ] 松 村 , 中 井 : tL 誤 り耐 性 を強 化 し た 動 画 像 高 能率符号化方 式 " , 1994年 画 像 符 号 化 シ ン ポ Ferguson and JGshu  ... 
doi:10.11485/tvtr.18.80_33 fatcat:duombr2dsnf7tfwew7wm2p4ixq

スプライトを適応的に利用したMPEG-4映像符号化システム
MPEG-4 Very Low Bitrate Video Coding System by Adaptively Using Sprite

Kumi JINZENJI, Shigeki OKADA, Yoshiyuki YASHIMA, Hiroshi WATANABE
2004 The Journal of the Institute of Image Electronics Engineers of Japan  
Then, we have some experiment on M PEG-4video coding. The result shows eff ectiveness' of proposed encoder in low bit-rate coding.  ...  Sprite mode does not always adopt any video sequence such that images having still camera motion can be compressed in enough quality in low bit-rate.  ...  図 1 スプライトショットの概念 Fig. 1 The concept of sprite shot coding.  ... 
doi:10.11371/iieej.33.333 fatcat:ty7um6rl7zaqtl5tqgqp32iz5y

27-3 低ビットレート符号化における動きベクトル決定手法の一検討
A study on the motion vector decision scheme for very low bitrate video coding

Shun-ichi Sekiguchi, Yoshimi Isu, Kohtaro Asai
1998 Proceedings of the ITE Annual Convention  
1998年映 像情報 メ デ ィ ア 学会年次大会 ( ITE ' 98:1998 ITE Annual Convention ) 27 − 3 低 ビッ トレ ー ト符号化に お け る動 きベ ク トル 決定 手法 の 一 検討 A study on the motion vector decision scheme for very low bitrate video codlllg 関  ...  Based α , "le erPeri 〃 letl '∫ oll ルIPE6 −4 ノ 激α'ne 一 わ ased coding , ' ,ropose ゴ decisioJt scheme 5' 置 ow ∫ 〃ie poss ' わ〃' 乳 y ' o reduce ' 1!  ... 
doi:10.11485/iteac.1998.0_411 fatcat:lcnxsifjynfyfaevxruqrfgeqy

Motion-adapted content-based temporal scalability in very low bitrate video coding

Chung-Tao Chu, D. Anastassiou, Shih-Fu Chang
Proceedings DCC '97. Data Compression Conference  
Because of stringent bandwidth requirement, very low bitrate video coding usually uses lower frame rates in order to comply with the bitrate constraint.  ...  In this paper, we propose a motion-adapted encoding scheme for content-based temporal scalability in very low bitrat video coding.  ...  Simulations are done on video phony sequences and selected MPEG4 test sequences. * C. -T. Chu, D. Anastassiou, S. -F. Chang."  ... 
doi:10.1109/dcc.1997.582087 fatcat:qdnkblf7ubao7mzdav2jg75mji

Compression Performances of Computer Vision Based Coding

Franck Galpin, Luce Morin, Koichiro Deguchi
2002 IAPR International Workshop on Machine Vision Applications  
This paper presents new results in the field of very low bitrate codir~g and cornpression usirig 3D iriforrnations.  ...  Contrary to prior art in model-based coding where 3D models have to be known, the 3D models are automatically computed from the original video sequence.  ...  The results clearly show that such an approach is very efficient for low bitrate coding and also show new results for very low bitrate coding.  ... 
dblp:conf/mva/GalpinMD02 fatcat:aoyzru4onvctllisrakpbiz4ei

A Hybrid Deep Animation Codec for Low-bitrate Video Conferencing [article]

Goluck Konuko and Stéphane Lathuilière and Giuseppe Valenzise
2022 arXiv   pre-print
Specifically, we extend a codec based on facial animation by adding an auxiliary stream consisting of a very low bitrate version of the video, obtained through a conventional video codec (e.g., HEVC).  ...  While these schemes bring significant coding gains over conventional video codecs at low bitrates, their performance saturates quickly when the available bandwidth increases.  ...  They have been used in video compression to code a picture/video at very low bitrate, e.g., by hallucinating parts of the video outside the region of interest [15] .  ... 
arXiv:2207.13530v1 fatcat:becjsfnizbdrpicc72r4vbej4i

Representation Of Motion Vectors In Modified Advanced Video Coding With Spatial Scalability

Rafal Lange, Lukasz Blaszak, M. Domanski
2004 Zenodo  
INTRODUCTION Recently, a new hybrid video coding standard AVC (Advanced Video Coding) has been developed [1, 2] .  ...  In AVC, motion vector bitstream is very efficiently compressed by use of predictive coding.  ... 
doi:10.5281/zenodo.38692 fatcat:e3vkxgacavcrhlt3vo3minqysy

Adaptive down-sampling video coding

Ren-Jie Wang, Ming-Chen Chien, Pao-Chi Chang, Reiner Creutzburg, David Akopian
2010 Multimedia on Mobile Devices 2010  
As a result, the rate-distortion performance of ADS coding is always higher than the fixed ratio coding or H.264/AVC by 2 to 4 dB at low to medium rates.  ...  For a given rate and a video sequence, the optimum down-sampling resolution-ratio can be derived by utilizing the optimum theory toward minimizing the system distortion based on the models of the two distortions  ...  The original frame F high is first down-sampled as DF low . It is then encoded as conventional video coding with the bitrates R. At the decoder side, the video sequence is decoded as RDF low .  ... 
doi:10.1117/12.840257 fatcat:tytogze6kfa45ahfb4m3kow35i

Subjective quality assessment comparing UHD and HD resolution in HEVC transmission chains

Kongfeng Berger, Yao Koudota, Marcus Barkowsky, Patrick Le Callet
2015 2015 Seventh International Workshop on Quality of Multimedia Experience (QoMEX)  
Index Terms-Ultra HDTV, subjective video quality assessment, high efficiency video coding, spatial up-sampling  ...  It is also shown that the required bitrate for achieving a chosen broadcast quality level varies with content by a factor of about 14 in HEVC coding.  ...  In the situation where there was significant difference, UHD-transmitted videos were preferred at very high coding bitrate, but HD-transmitted videos were preferred at low, medium, and high coding bitrate  ... 
doi:10.1109/qomex.2015.7148114 dblp:conf/qomex/BergerKBC15 fatcat:gx753mh7evatholunq23f4ctai

An Analysis of Constant Bitrate and Constant PSNR Video Encoding for Wireless Networks

Tanir Ozcelebi, Fabio Vito, A. Tekalp, M. Civanlar, M. Sunay, J. De Martin
2006 2006 IEEE International Conference on Communications  
Instead of transmitting all of the video content at low quality, the most important content can be transmitted at high quality while still preserving an acceptable quality for the remaining segments.  ...  In wireless networks, transmission of constantquality, high bitrate video is a challenging task due to channel capacity and buffer limitations.  ...  Modern video codecs like AVC/H.264 [1] can achieve very low bitrate coding of sequences.  ... 
doi:10.1109/icc.2006.255423 dblp:conf/icc/OzcelebiVTCSM06 fatcat:3zznpli4t5eu7f7qwnyn3irbii

Object-Based Approach for Adaptive Source Coding of Surveillance Video

Tung-Ming Pan, Kuo-Chin Fan, Yuan-Kai Wang
2019 Applied Sciences  
The linear model is applied to predict the bitrate increment required to enhance video quality.  ...  In this paper, an object-based source coding method is proposed to preserve constant quality of video streaming over wireless networks.  ...  However, such low-level metrics are not robust and are very susceptible to interference due to noisy motion, such as scene changes.  ... 
doi:10.3390/app9102003 fatcat:itlp4jclifglpibq3o7wrm7zum

Design of a High Definition Video Communication System in Real-Time Network

Yun Feng Liu, Xian Rong Peng, Zheng Jin
2013 Applied Mechanics and Materials  
The low-delay rate control algorithm can limit the bitrate in a very low level.  ...  In order to process and transmit the high definition video, the design combines FPGA and SOC, follows the H.264 video coding compression.  ...  H.264 as the new generation video coding standard, has greatly improved the image quality and bitrate control.  ... 
doi:10.4028/www.scientific.net/amm.347-350.2012 fatcat:h6pb7zkhovdbhgn4q3fdo753g4

Perceived Audiovisual Quality of Low-Bitrate Multimedia Content

S. Winkler, C. Faller
2006 IEEE transactions on multimedia  
This paper studies the quality of multimedia content at very low bitrates. We carried out subjective experiments for assessing audiovisual, audio-only, and video-only quality.  ...  H.264) and AAC coding standards. Based on these data, we first analyze the influence of video and audio coding parameters on quality.  ...  This paper focuses on very low bitrates achievable with today's codecs for mobile applications such as MMS or video streaming.  ... 
doi:10.1109/tmm.2006.879871 fatcat:e5dg6t34fngkvnnj5hu3ffypum

Rho-Domain for Low-Complexity Rate Control on MPEG-4 Scalable Video Coding

Yohann Pitrey, Yann Serrand, Marie Babel, Olivier Déforges
2008 2008 Tenth IEEE International Symposium on Multimedia  
Results show that the mean frame bitrate error is below 7% on a representative set of configurations, while the impact on the complexity of the encoder is very low.  ...  In this paper, we adapt an attractive rate control approach, based on a bitrate modeling framework called ρ-domain, for scalable video coding.  ...  This enables good bitrate prediction with very low complexity using ρ as an intermediate between the QP and the output bitrate.  ... 
doi:10.1109/ism.2008.71 dblp:conf/ism/PitreySBD08 fatcat:anax574aevc6xp3k3zteio3jbq
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