Geert Van der Auwera, Martin Reisslein,
... based scalable video coding (SVC) extension of the H.264/AVC standard achieves significantly improved compression over the initial H.264/AVC codec, the SVC video traffic is significantly more variable than H.264/AVC traffic. The higher traffic variability of the ... supported with bufferless statistical multiplexing than with the H.264/AVC encoder (and even less streams than with ... traffic smoothing on the numbers of statistically multiplexed H.264 SVC, H.264/AVC, and MPEG-4 Part 2 streams, the ... the levels of smoothing that ensure that more H.264 SVC streams than H.264/AVC streams can ...
Tópico(s): Advanced Data Compression Techniques
2009 - Institute of Electrical and Electronics Engineers | IEEE Transactions on Broadcasting
Jun‐Ren Ding, Jiun-Yu Chen, Fu-Chun Yang, Jar-Ferr Yang,
... coding algorithm to improve the performance of the H.264-based lossless (H.264-LS) image coding. From universal access point of view, the proposed method is based on the H.264 lossy image coding with other CABAC layer to compensate the lossy portion. Besides, the H.264-LS with DPCM (H.264-LS_DPCM) and H.264-LS achieve different coding performance in use of ... detection rates and improvement of compression rate for H.264-LS and H.264-LS_DPCM coders. The two-layer H.264-LS almost have the same compression rate than ...
Tópico(s): Advanced Vision and Imaging
2008 - Institute of Electrical and Electronics Engineers | Proceedings of the ... IEEE International Conference on Acoustics, Speech, and Signal Processing
Gerardo Fernández-Escribano, Hari Kalva, Pedro Cuenca, Luis Orozco‐Barbosa, A. Garrido,
The H.264 standard achieves much higher coding efficiency than the MPEG-2 standard, due to its improved inter-and ... higher computational complexity. Transcoding MPEG-2 video to H.264 is important to enable gradual migration to H.264. However, given the significant differences between the MPEG-2 and the H.264 coding algorithms, transcoding is a much more complex ... the design of an efficient heterogeneous MPEG-2/H.264 transcoder are: the inter-frame prediction, the transform ... of a very low complexity MPEG-2 to H.264 video transcoder. Since coding mode decisions take up ...
Tópico(s): Multimedia Communication and Technology
2008 - Institute of Electrical and Electronics Engineers | IEEE Transactions on Circuits and Systems for Video Technology
Gerardo Fernández-Escribano, Jens Bialkowski, José A. Gámez, Hari Kalva, Pedro Cuenca, Luis Orozco‐Barbosa, André Kaup,
Recent developments have given birth to H.264/AVC: a video coding standard offering better bandwidth to video quality ratios than previous standards (such as H.263, MPEG-2, MPEG- ... of higher computation complexity. It is expected that H.264/AVC will take over the digital video market, ... heterogeneous video transcoding technologies from older standards to H.264. In this paper, we focus our attention on ... the hypothesis that MB coding mode decisions in H.264 video have a correlation with the distribution of ...
Tópico(s): Advanced Vision and Imaging
2008 - Institute of Electrical and Electronics Engineers | IEEE Transactions on Multimedia
Naziha Khlif, Atef Masmoudi, Fahmi Kammoun, Nouri Masmoudi,
... ArticleFree Access Secure chaotic dual encryption scheme for H.264/AVC video conferencing protection Naziha Khlif, Corresponding Author ... chaos-based crypto-compression scheme to protect the H.264 advanced video coding (AVC) used for the applications ... real-time application and convenient for all the H.264/AVC profiles or even with other video compression ... scheme to protect video sequences decoded with the H.264/advanced video coding (AVC) codec. The insertion of the encryption on H.264/AVC should preserve its format [8] which means ...
Tópico(s): Video Coding and Compression Technologies
2017 - Institution of Engineering and Technology | IET Image Processing
Mustafa Parlak, İlker Hamzaoğlu,
... paper, we present two efficient and low power H.264 deblocking filter (DBF) hardware implementations that can be used as part of an H.264 video encoder or decoder for portable applications. The ... of DBF module with other modules in the H.264 encoder/decoder. Overlapping the execution of DBF hardware ... the execution of the other modules in the H.264 encoder/decoder improves the performance of the H.264 encoder/decoder. The second implementation (DBF_16times16) starts ... These gate counts are the lowest among the H.264 DBF hardware implementations presented in the literature. Our ...
Tópico(s): Multimedia Communication and Technology
2008 - Institute of Electrical and Electronics Engineers | IEEE Transactions on Consumer Electronics
Rate distortion (RD) optimization for H.264 interframe coding with complete baseline decoding compatibility is investigated on a frame basis. Using soft decision quantization (SDQ) rather than the ... which motion estimation, quantization, and entropy coding (in H.264) for the current frame can be jointly designed ... graph-based algorithm for near optimal SDQ in H.264 baseline encoding given motion estimation and quantization step ... an algorithm for near optimal residual coding in H.264 baseline encoding given motion estimation, and an iterative ...
Tópico(s): Advanced Vision and Imaging
2007 - Institute of Electrical and Electronics Engineers | IEEE Transactions on Image Processing
Yen-Kuang Chen, Eric Q. Li, Xiaosong Zhou, Steven Ge,
H.264 is an emerging video coding standard, which aims at compressing high-quality video contents at low- ... than most existing standards do. The complexity of H.264 standard poses a large amount of challenges to ... personal computers. This work analyzes software implementation of H.264 encoder and decoder on general-purpose processors with ... we discuss how to optimize the algorithms of H.264 encoders and decoders on Intel Pentium 4 processors. ... codec improves by more than 3×. Nonetheless, the H.264 encoder is still too complicated to be implemented ...
Tópico(s): Advanced Data Compression Techniques
2005 - Elsevier BV | Journal of Visual Communication and Image Representation
Zong-Yi Chen, Tseng Chi-Teng, Pao-Chi Chang,
H.264 video compression standard has achieved great success in real life applications.It has been widely used ... and video storage.Even Bluray Disc (BD) adopts H.264 as its specifications.However, the next generation of ... HEVC can save about 50% bitrate compared with H.264 [1].Thus, Abstr act.Owing to the high ... standard, it is expected as a successor to H.264.The widely usage of H.264 today and the expected future adoption of HEVC raises a new demand for H.264 to HEVC transcoding.An efficient transcoding way is ...
Tópico(s): Advanced Image Processing Techniques
2013 - Atlantis Press | Advances in intelligent systems research/Advances in Intelligent Systems Research
Jingyao Xu, Mai Xu, Yanan Wei, Zulin Wang, Zhenyu Guan,
... compared with the previous coding standards, for example, H.264. In general, H.264 to HEVC transcoding can be accomplished by fully H.264 decoding and fully HEVC encoding, which suffers from ... instead of the brute-force RDO search, for H.264 to HEVC transcoding. First, we build a large-scale H.264 to HEVC transcoding database. Second, we investigate the correlation between the HEVC CTU partition and H.264 features, and analyze both temporal and spatial-temporal ... computational time can be significantly reduced for fast H.264 to HEVC transcoding. Finally, the experimental results verify ...
Tópico(s): Advanced Image Processing Techniques
2018 - Institute of Electrical and Electronics Engineers | IEEE Transactions on Multimedia
Balamuralii Balasubramaniyam, Eran A. Edirisinghe, Helmut Bez,
We propose an extension to the H.264 video coding standard, which is capable of efficiently coding stereoscopic video sequences. In contrast to previous techniques, the proposed Stereoscopic Video CODEC uses a single modified H.264 encoder and a single modified H.264 decoder in its design. The left (reference) and ... are fed alternatively to the encoder. The modified H.264 encoder uses a Decoded Picture Buffer Store (DPBS) ... addition to the regular DPB of the original H.264 encoder. An effective buffer management strategy between DPBS ...
Tópico(s): Advanced Data Compression Techniques
2005 - SPIE | Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE
Recently the latest video coding standard H.264/AVC is widely used for the mobile and low bitrate video codec in the various multimedia terminals. On the other hand, the ... terminals, the transcoding of MPEG-2 contents into H.264/AVC format is an inevitable technology in the ... the process lies in the computational complexity. In H.264/AVC, the variable block size (VBS) mode decision ( ... are also permitted in the Interframe MD of H.264/AVC to further ameliorate the encoding performance. With ... fast Interframe MD algorithm for MPEG-2 to H.264/AVC transcoding. The relationships between SKIP and Intra ...
Tópico(s): Advanced Vision and Imaging
2009 - Elsevier BV | Journal of Visual Communication and Image Representation
Dima Pröfrock, Henryk Richter, Mathias Schlauweg, Erika Müller,
... a new watermarking framework, suitable for authentication of H.264 compressed videos. The authentication data is embedded as ... other approaches, the watermarking is done after the H.264 compression process. Hence, the authentication information can be ... in already encoded videos. To reconstruct the original H.264 compressed video the watermark can be removed. The ... on a new transcoder, which analyses the original H.264 bit stream, computes a watermark, embeds the watermark and generates a new H.264 bit stream. To authenticate the video a hash ...
Tópico(s): Video Coding and Compression Technologies
2005 - SPIE | Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE
Hongtao Yu, Zhiping Lin, Feng Pan,
This paper aims at applying H.264 in medical video compression applications and improving the H.264 rate control algorithm with better perceptual quality. First, H.264 is briefly reviewed and introduced to the area ... contents in a video frame, and a new H.264 rate control scheme with the MC measure and ... are conducted: the comparison between MPEG-4 and H.264, and the comparison between JVT-H014 , which is the H.264 adopted rate control algorithm, and our proposed rate ... of experiments shows that compared with MPEG-4, H.264 can achieve a significant average peak signal-to- ...
Tópico(s): Image and Video Quality Assessment
2005 - Institute of Electrical and Electronics Engineers | IEEE Transactions on Circuits and Systems I Fundamental Theory and Applications
Margaret H. Pinson, Stephen Wolf, Gregory W. Cermak,
The intent of H.264 (MPEG-4 Part 10) was to achieve equivalent quality to previous standards (e.g., MPEG-2) at no more than half the bit-rate. H.264 is commonly felt to have achieved this objective. ... subjective experiment that compared the perceptual quality of H.264 to MPEG-2. The study included both the ... results partially uphold the commonly held claim that H.264 provides quality similar to MPEG-2 at no ... the coding-only case. However, the advantage of H.264 diminishes with increasing bit rate and all but ...
Tópico(s): Advanced Image Processing Techniques
2009 - Institute of Electrical and Electronics Engineers | IEEE Transactions on Broadcasting
Qiang Tang, Panos Nasiopoulos, Rabab Ward,
Implementing MPEG-2 to H.264 transcoding schemes in the pixel domain introduces a high degree of computational complexity. In the transform domain, this transcoding is ... as the mismatches between the MPEG-2 and H.264 motion compensation processes, cause several distortions that may ... so that it can be applied to the H.264 integer transform coefficients. Equations that compensate for the ... derived. To remove the interpolation errors, the previous H.264 frame is needed. Thus, the compensation scheme includes ...
Tópico(s): Advanced Image Processing Techniques
2008 - Institute of Electrical and Electronics Engineers | IEEE Transactions on Circuits and Systems for Video Technology
... study the rate-distortion (RD) optimization of the H.264 main profile encoding. Specifically, a soft decision quantization ( ... adaptive binary arithmetic coding (CABAC) method in the H.264 main profile. Given motion prediction and quantization step ... jointly design motion prediction and residual coding for H.264 main profile coding given previously coded reference frames. ... conducted based on the reference encoder JM82 of H.264 main profile. Comparative studies show that the joint ... when compared with the RD method in the H.264 main-profile reference software, with half of the ...
Tópico(s): Advanced Vision and Imaging
2008 - Institute of Electrical and Electronics Engineers | IEEE Transactions on Circuits and Systems for Video Technology
Patrick Seeling, Martin Reisslein,
... studied MPEG-4 encoded video, the recently adopted H.264 video coding standards include novel mechanisms, such as ... based evaluation methodology for the network transport of H.264 encoded video. We first give an overview of H.264 video coding, and then present the trace structures for capturing the characteristics of H.264 encoded video. We give an overview of the typical video traffic and quality characteristics of H.264 encoded video. Finally, we explain how to account for the H.264 specific coding mechanisms, such as hierarchical B frames, ...
Tópico(s): Network Traffic and Congestion Control
2011 - Institute of Electrical and Electronics Engineers | IEEE Communications Surveys & Tutorials
Michael Horowitz, F. Kossentini, Nader Mahdi, Shilin Xu, Hsan Guermazi, Hassene Tmar, Bin Li, Gary J. Sullivan, Jizheng Xu,
... Coding (HEVC) draft standard and the well-established H.264 / MPEG-4 AVC High Profile (HP) for low- ... HEVC reference software (HM) against a similarly configured H.264 / MPEG-4 AVC HP reference encoder (JM). Additionally, ... complement these results, the widely-recognized production-quality H.264 / MPEG-4 AVC encoder known as x264 is ... Similarly, when comparing the eBrisk HEVC and x264 H.264 / MPEG-4 AVC production encoders in which x264 ... substantial improvement in compression capability beyond that of H.264 / MPEG-4 AVC (as represented by a similarly- ...
Tópico(s): Advanced Vision and Imaging
2012 - SPIE | Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE
H.264 is the emerging video coding standard, which aims at compressing high-quality video contents at low ... than most existing standards do. The complexity of H.264 standard poses a large amount of challenges to ... another 2~4x improvement from algorithmic optimization, the H.264 encoder is still too complicated to be implemented ... detailed analysis of the possibilities of parallelism in H.264 encoder, we proposed an efficient multithreading implementation of the H.264 video encoder. In order to guarantee enough concurrency ...
Tópico(s): Advanced Vision and Imaging
2004 - SPIE | Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE
Wei Chen, Zafar Shahid, Thomas Stütz, Florent Autrusseau, Patrick Le Callet,
... a novel method for open-loop watermarking of H.264/AVC bitstreams. Existing watermarking algorithms designed for previous ... as MPEG-2 cannot be directly applied to H.264/AVC, as H.264/AVC implements numerous new features that were not ... coders. In contrast to previous watermarking techniques for H.264/AVC bitstreams, which embed the information after the ... algorithm. The major design goals of this novel H.264/AVC watermarking algorithm are runtime-efficiency, high perceptual ... being used in the intra-prediction process of H.264/AVC are not modified. For watermark detection, we ...
Tópico(s): Digital Media Forensic Detection
2013 - Springer Science+Business Media | Multimedia Systems
B. Srinivasarao, Indrajit Chakrabarti, Mohammad Nawaz Ahmad,
H.264/AVC is regarded as a popular video coding standard, and is widely used in multimedia applications. ... all set to serve as the successor to H.264/AVC for higher resolution video applications. Since a ... devices have already been operating based on the H.264/AVC standard, it may not be worthwhile to ... therefore felt to design a decoder for supporting H.264/AVC as well as HEVC, rather than attempting ... dual-standard deblocking filter architecture, which supports both H.264/AVC and HEVC standards. Algorithmic verification has been ...
Tópico(s): Electromagnetic Compatibility and Noise Suppression
2015 - Institution of Engineering and Technology | IET Circuits Devices & Systems
Hyun Kim, Chae Eun Rhee, Hyuk‐Jae Lee,
... power consumption and to increase battery lifetime. The H.264/AVC compression is widely used for many video ... compression efficiency; however, the complex coding structure of H.264/AVC compression requires large power consumption. A light- ... partitioning in hierarchical trees, consumes less power than H.264/AVC compression thanks to its relatively simple coding ... its compression efficiency is lower than that of H.264/AVC compression. This paper proposes a low-power video recording system that combines both the H.264/AVC encoder with high compression efficiency and LWC ...
Tópico(s): Image and Video Quality Assessment
2016 - Institute of Electrical and Electronics Engineers | IEEE Transactions on Multimedia
José Luis Martínez, Gerardo Fernández-Escribano, Hari Kalva, W.A.C. Fernando, Pedro Cuenca,
This paper proposes a Wyner-Ziv/H.264 transcoder that enables low cost video applications. The proposed solution supports video encoding on resource constrained devices such as disposable video cameras, ... a transcoder efficiently converts WZ encoded video to H.264 by reusing the information from the WZ decoding stage. The transcoded H.264 video is requires fewer resources than WZ decoding ... block mode coding decision process carried out in H.264 encoding stage of the transcoder. Based on a ... mining process, the approach replaces the high complexity H.264 mode decision algorithm by a faster decision tree. ...
Tópico(s): Video Coding and Compression Technologies
2009 - Institute of Electrical and Electronics Engineers | IEEE Transactions on Consumer Electronics
Qiang Tang, Panos Nasiopoulos,
One objective in MPEG-2 to H.264/advanced video coding transcoding is to improve the H.264/AVC compression ratio by using more advanced macroblock encoding modes. The motion ... transcoding. In this paper, we present an efficient H.264/AVC block size partitioning prediction algorithm for MPEG-2 to H.264/AVC transcoding applications. Our algorithm uses rate-distortion ... UMHexagonS, the fast motion estimation algorithm used in H.264/AVC, the experimental results show that our proposed ...
Tópico(s): Image and Video Quality Assessment
2009 - Institute of Electrical and Electronics Engineers | IEEE Transactions on Circuits and Systems for Video Technology
Xiangyang Ji, Debin Zhao, Wen Gao,
H.264/AVC scalable video coding (H.264/AVC SVC), as the scalable extension of H.264/AVC, offers the flexible adaptivity in terms of spatial, temporal and SNR scalabilities ... to tackle the whole-picture loss problem in H.264/AVC SVC when hierarchical B-picture coding is ... compared to the error concealment algorithm used in H.264/AVC SVC reference software. The proposed method can also be applied to H.264/AVC with hierarchical B-picture coding for error ...
Tópico(s): Image and Video Quality Assessment
2008 - Institute of Electrical and Electronics Engineers | IEEE Transactions on Multimedia
The efficiency of H.264 video compression together with the wide use of MPEG-2 today necessitates transcoding between these two technologies. The combination of bandwidth efficient technology such as H.264 and the widely deployed MP EG-2 allows ... services that can exploit both these technologies. Using H.264 for video delivery and MPEG-2 for playback ... benefits of these technologies. This architecture requires transcoding H.264 video delivered over networks to MPEG-2 format ... end- user device. We present algorithms for transcoding H.264 to MPEG-2 and evaluate the performance of ...
Tópico(s): Advanced Data Compression Techniques
2008 - Institute of Electrical and Electronics Engineers | IEEE Transactions on Consumer Electronics
Jongmin You, Changryoul Choi, Jechang Jeong,
H.264/AVC allows several prediction schemes including variable modes for intra and inter predictions. To take full advantage of all allowed modes, H.264 employs rate distortion optimization (RDO) as its mode decision method. However, RDO incorporated into the H.264 encoder assumes block independence because calculating rate distortion ( ... assumption, coding efficiency of intra prediction in the H.264 encoder is affected by reference pixels in neighboring blocks. Thus, RDO in the H.264 encoder has potential to improve coding performance by ...
Tópico(s): Advanced Vision and Imaging
2008 - Institute of Electrical and Electronics Engineers | IEEE Transactions on Consumer Electronics
Geert Van der Auwera, Prasanth T. David, Martin Reisslein,
The recently developed H.264/AVC encoder compresses video significantly more efficiently than previous encoders and is expected to be used for compressing the ... it very important to study the characteristics of H.264/AVC video traffic. In this article, we examine ... rate variability, and long-range dependence of the H.264/AVC encoder for long videos up to high- ... also explore the impact of smoothing on the H.264/AVC video traffic. We find that compared to ... MPEG-2 and MPEG-4 Part 2 encoders, H.264/AVC achieves lower average bit rates for a ...
Tópico(s): Multimedia Communication and Technology
2008 - Institute of Electrical and Electronics Engineers | IEEE Communications Magazine
Tammam Tillo, Marco Grangetto, Gabriella Olmo,
In this paper, a novel H.264 multiple description technique is proposed. The coding approach is based on the redundant slice representation option, defined in the H.264 standard. In presence of losses, the redundant representation ... redundant slices, while keeping full compatibility with the H.264 standard syntax and decoding behavior in case of ... When two descriptions are available still a standard H.264 decoder can be used, given a simple preprocessing ... that the proposed technique favorably compares with other H.264 multiple description approaches.
Tópico(s): Digital Filter Design and Implementation
2008 - Institute of Electrical and Electronics Engineers | IEEE Transactions on Circuits and Systems for Video Technology