Backward compatible enhancement of chroma format in HEVC

IOP Conference Series: Materials Science and Engineering, 2013

High definition video is becoming popular day by day due to desire for superior level quality and high resolution video. The upcoming High Efficiency Video Coding (HEVC) standard is designed to serve diverse range of applications like HDTV, video conferencing, fast internet streaming and videophone. This paper describes the performance analysis of HEVC with H.264/AVC video coding standard. Various 1920x1080 resolution high definition sequences are used to check the efficiency of HEVC. Simulation results show that HEVC in comparison to H.264 results in 52 % (average) bit rate improvement without significantly affecting the subjective and objective quality of video.

This paper describes an extension of the upcoming High Efficiency Video Coding (HEVC) standard for supporting spatial and quality scalable video coding. Besides scalable coding tools known from scalable profiles of prior video coding standards such as H.262/MPEG-2 Video and H.264/MPEG-4 AVC, the proposed scalable HEVC extension includes new coding tools that further improve the coding efficiency of the enhancement layer. In particular, new coding modes by which base and enhancement layer signals are combined for forming an improved enhancement layer prediction signal have been added. All scalable coding tools have been integrated in a way that the low-level syntax and decoding process of HEVC remain unchanged to a large extent. Simulation results for typical application scenarios demonstrate the effectiveness of the proposed design. For spatial and quality scalable coding with two layers, bit-rate savings of about 20-30% have been measured relative to simulcasting the layers, which corresponds to a bit-rate overhead of about 5-15% relative to single-layer coding of the enhancement layer.

2015

High Efficiency Video Coding (HEVC/H.265) [1] is the state of the art video compression standard, which provides bitrate reduction in the range of 50% when compared to the previous Advanced Video Coding (MPEG-4 AVC/H.264) [5] standard at similar video quality. Scalable High Efficiency Video Coding (SHVC) [2] is the scalable extension of HEVC, which provides traditional scalability options in terms of quality, spatial resolution and temporal frame rate and newer scalability options as well. SHVC can be used to deliver Ultra High Definition (UHD) or 4K resolution video content to mix of clients having varying characteristics. The distribution of clients in today's multimedia environment is heterogeneous, as there are televisions, computers and mobile devices, supporting different codecs (MPEG-4 AVC or HEVC), resolutions (UHD, HD or SD) and varying bandwidth characteristics. To efficiently deliver video content to heterogeneous clients having varying resources, a combination of these state of the art video coding (SHVC) and streaming technologies (MPEG-DASH) can be employed. Traditionally, multiple versions of the same video are stored on the servers to satisfy varying client characteristics and are delivered using simulcast coding. This leads to increased video bitrates and hence increases storage costs. However, using scalable v video coding such as SHVC-where multiple versions of the video are embedded into different layers of the bit stream, results in bitrate savings. This bitrate savings come at a cost of reduced coding efficiency due to addition of layers, known as scalability overhead. The primary focus of the thesis is investigation of bitrate savings and the scalability overhead incurred during encoding of UHD video content as SHVC enhancement layer with HEVC or MPEG-4 AVC as HD base layer and obtaining a methodology for comparison of scalable codec such as SHVC with other codecs. Experiments are conducted for SHVC encoding with fixed bitrate allocation into base layer (BL) and enhancement layer (EL) for two and three layers, concentrating on spatial and quality scalabilities. Additional experiments for two layered SHVC encoding are performed by varying the bitrate allocation into BL and EL exploring spatial scalability. The heuristic method of bitrate allocation for scalable video coding considering both bitrate savings and scalability overhead is a tedious process and error prone. In order to effectively satisfy clients with varying bandwidth characteristics in the context of HTTP video streaming, an optimal SHVC bitrate allocation is necessary. Hence, existing bit rate allocation problem for scalable video coding is reviewed, adapted and evaluated for the scenario of UHD deployment with SHVC for optimal bitrate allocation with two layers. vi Table of Contents Acknowledgements .

IEEE Transactions on Circuits and Systems for Video Technology, 2000

Advances in Intelligent Systems and Computing, 2015

In this paper, the implementation method for encoding the high resolution videos using high efficiency video coding (HEVC) standard is introduced with a new approach. The HEVC standard, successor to the H.264/AVC standard, is more efficient than the H.264/AVC standard in the encoding high resolution videos. HEVC has been designed to focus on increasing video resolution and increasing the use of parallel processing architectures. Therefor, this approach merging all traditional configuration files used in the encoding process into only one configuration file without removing any parameters used in the traditional methods. Improvements are shown using the proposed approach in terms of encoding time as opposed to the traditional methods by reducing the access time by half which resulting from reducing the data exchange between the configuration files used in this process and without changing the rate-distortion (RD) performance or compression ratio.

—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. Index Terms—Advanced video coding (AVC), H.264, High Efficiency Video Coding (HEVC), Joint Collaborative Team on Video Coding (JCT-VC), Moving Picture Experts Group (MPEG), MPEG-4, standards, Video Coding Experts Group (VCEG), video compression.

— High-Efficiency Video Coding (HEVC) is currently being prepared as the newest video coding standard of the ITU-T Video Coding Experts Group (VCEG) and the ISO/IEC Moving Picture Experts Group (MPEG). 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 article provides an overview of the technical features and characteristics of the HEVC standard.

This paper presents an overview of the upcoming High Efficiency Video Coding standard (HEVC). Among all HEVC requirements, HEVC has to divide by a factor of 2 the bitrate of the current state-of-the-art standard H.264/AVC. At the 8 th standardization meeting, the joint collaborative team (JCT) has reached the goal and even more has reduced the bitrate up to 70% compared to AVC/H.264 at constant quality (psychovisual tests). This paper will present a state-of-the-art of current coding and parallelism tools available in the HEVC standard.

The high-efficiency video coding (HEVC) standard is the newest video coding standard currently under joint development by ITU-T Video Coding Experts Group (VCEG) and ISO/IEC Moving Picture Experts Group (MPEG). HEVC is the next-generation video coding standard after H.264/AVC. The goals of the HEVC standardization effort are to double the video coding efficiency of existing H.264/AVC while supporting all the recognized potential applications, such as, video telephony, storage, broadcast, streaming, especially for large picture size video (4k × 2k). The HEVC standard will be completed as an ISO/IEC and ITU-T standard in January 2013. In February 2012, the HEVC standardization process reached its committee draft (CD) stage. The ever-improving HEVC standard has demonstrated a significant gain in coding efficiency in rate-distortion efficiency relative to the existing H.264/AVC. This paper provides an overview of the technical features of HEVC close to HEVC CD stage, covering high-level structure, coding units, prediction units, transform units, spatial signal transformation and PCM representation, intra-picture prediction, inter-picture prediction, entropy coding and in-loop filtering. The HEVC coding efficiency performances comparing with H.264/AVC are also provided.

2013 IEEE Third International Conference on Consumer Electronics ¿ Berlin (ICCE-Berlin), 2013

The recently finalized High-Efficiency Video Coding (HEVC) standard was jointly developed by the ITU-T Video Coding Experts Group (VCEG) and the ISO/IEC Moving Picture Experts Group (MPEG) to improve the compression performance of current video coding standards by 50%. Especially when it comes to transmit high resolution video like 4K over the internet or in broadcast, the 50% bitrate reduction is essential. This paper shows that real-time decoding of 4K video with a framelevel parallel decoding approach using four desktop CPU cores is feasible.