High Efficiency Video Coding (HEVC) is currently being prepared as the newest video coding standard of the ITU-T Video Coding Experts Group and the ISO/IEC Moving Picture Experts Group. The main goal of the HEVC standardization effort is to enable significantly improved compression performance relative to existing standards-in the range of 50% bit-rate reduction for equal perceptual video quality. This paper provides an overview of the technical features and characteristics of the HEVC standard.

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Overview of the High Efficiency Video Coding (HEVC) Standard

The compression capability of several generations of video coding standards is compared by means of peak signal-to-noise ratio (PSNR) and subjective testing results. A unified approach is applied to the analysis of designs, including H.262/MPEG-2 Video, H.263, MPEG-4 Visual, H.264/MPEG-4 Advanced Video Coding (AVC), and High Efficiency Video Coding (HEVC). The results of subjective tests for WVGA and HD sequences indicate that HEVC encoders can achieve equivalent subjective reproduction quality as encoders that conform to H.264/MPEG-4 AVC when using approximately 50% less bit rate on average. The HEVC design is shown to be especially effective for low bit rates, high-resolution video content, and low-delay communication applications. The measured subjective improvement somewhat exceeds the improvement measured by the PSNR metric.

http://amalia.img.lx.it.pt/~fp/cav/Additional_material/HEVC-Performance.pdf

Comparison of the Coding Efficiency of Video Coding Standards—Including High Efficiency Video Coding (HEVC)

With the aim of developing a fast yet accurate algorithm for compressive sensing (CS) reconstruction of natural images, we combine in this paper the merits of two existing categories of CS methods: the structure insights of traditional optimization-based methods and the speed of recent network-based ones. Specifically, we propose a novel structured deep network, dubbed ISTA-Net, which is inspired by the Iterative Shrinkage-Thresholding Algorithm (ISTA) for optimizing a general $$ norm CS reconstruction model. To cast ISTA into deep network form, we develop an effective strategy to solve the proximal mapping associated with the sparsity-inducing regularizer using nonlinear transforms. All the parameters in ISTA-Net (e.g. nonlinear transforms, shrinkage thresholds, step sizes, etc.) are learned end-to-end, rather than being hand-crafted. Moreover, considering that the residuals of natural images are more compressible, an enhanced version of ISTA-Net in the residual domain, dubbed ISTA-Net+, is derived to further improve CS reconstruction. Extensive CS experiments demonstrate that the proposed ISTA-Nets outperform existing state-of-the-art optimization-based and network-based CS methods by large margins, while maintaining fast computational speed. Our source codes are available: http://jianzhang.tech/projects/ISTA-Net.

/pdf/ista-net-interpretable-optimization-inspired-deep-network-1q89xgu2a1.pdf

ISTA-Net: Interpretable Optimization-Inspired Deep Network for Image Compressive Sensing

Advances in video compression technology have been driven by ever-increasing processing power available in software and hardware. The emerging High Efficiency Video Coding (HEVC) standard aims to provide a doubling in coding efficiency with respect to the H.264/AVC high profile, delivering the same video quality at half the bit rate. In this paper, complexity-related aspects that were considered in the standardization process are described. Furthermore, profiling of reference software and optimized software gives an indication of where HEVC may be more complex than its predecessors and where it may be simpler. Overall, the complexity of HEVC decoders does not appear to be significantly different from that of H.264/AVC decoders; this makes HEVC decoding in software very practical on current hardware. HEVC encoders are expected to be several times more complex than H.264/AVC encoders and will be a subject of research in years to come.

/pdf/hevc-complexity-and-implementation-analysis-1t56u7d1tf.pdf

HEVC Complexity and Implementation Analysis

A method of decoding a video signal is disclosed. The present invention includes obtaining identification information indicating whether a coded picture of a current NAL unit is an inter-view picture group, obtaining interview reference information of the inter-view picture group, and constructing a reference picture list for inter-view prediction using the inter-view reference information according to the identification information, wherein the inter-view reference information includes view identification information of an inter-view reference picture.

Method and apparatus for decoding/encoding a video signal

L'invention concerne un procede et un dispositif qui permettent d'appliquer un codage hierarchique au rapport signal sur bruit (SNR) dans un serveur de flux de donnees video pour transmettre un flux de donnees dans un environnement reseau variable. Un dispositif permettant d'adapter un debit binaire d'un train binaire code evolutif par multicouches a un environnement reseau variable comprend: une unite d'analyse de train binaire pour analyser un train binaire; une unite de determination de la condition de predecodage pour determiner un debit binaire de transmission cible conformement a l'environnement reseau variable; une unite de predecodage pour sauter au moins une trame sur l'ensemble des trames contenues dans le train binaire analyse conformement au debit binaire cible determine; et enfin, une unite de transmission de train binaire pour transmettre a un dispositif client le train binaire restructure consecutivement au saut de trame.

Dispositif et procede de reglage du debit binaire d'un train binaire code evolutif par multicouches

Verfahren und Vorrichtung zur Videokodierung und Verfahren und Vorrichtung zur Videodekodierung, basierend auf hierarchischer Struktur der Kodierungseinheit

Procédé et appareil de codage et de décodage d'une image au moyen d'unité de transformation de grande taille

Procédé et dispositif de codage utilisant la prédiction de mouvement au moyen du multi-référençage, et procédé et dispositif de décodage utilisant la prédiction de mouvement au moyen du multi-référençage

Kodierverfahren und vorrichtung mit bewegungsvorhersage mittels multireferenzierung sowie dekodierverfahren und vorrichtung mit bewegungsvorhersage mittels multireferenzierung

Woo-Jin Han

Papers

Dispositif et procede de reglage du debit binaire d'un train binaire code evolutif par multicouches

Verfahren und Vorrichtung zur Videokodierung und Verfahren und Vorrichtung zur Videodekodierung, basierend auf hierarchischer Struktur der Kodierungseinheit

Procédé et appareil de codage et de décodage d'une image au moyen d'unité de transformation de grande taille

Procédé et dispositif de codage utilisant la prédiction de mouvement au moyen du multi-référençage, et procédé et dispositif de décodage utilisant la prédiction de mouvement au moyen du multi-référençage

Kodierverfahren und vorrichtung mit bewegungsvorhersage mittels multireferenzierung sowie dekodierverfahren und vorrichtung mit bewegungsvorhersage mittels multireferenzierung