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Virtual reality applications make use of 360-degree panoramic or omnidirectional video with high resolution and high frame rate in order to create the immersive experience to the user. The user views only a portion of the captured 360-degree scene at each time instant, hence streaming the whole omnidirectional video in highest quality is not efficient. In order to alleviate the problem of bandwidth...
This paper describes a new 120 fps (frames per second) real-time HEVC encoder for higher frame rate video encoding and transmission. Modification in the flexible customizable software architecture of encoder LSIs makes it possible to achieve the temporally scalable HEVC encoding with upward compatibility for existing 60 fps-based systems. The encoder also achieves 4K/120fps video encoding in real...
The High Efficiency Video Coding (HEVC) standard defines 35 Intra Prediction Modes (IPM) to provide an efficient compression of intra coded blocks. Those IPMs are signalled to the decoder through the use of three compression tools: prediction, clustering and coding. In this paper we provide improvements to these three tools through: new labels for the prediction, new tests for the clustering and new...
Scalable High efficiency Video Coding (SHVC) is the scalable extension of the latest video coding standard High Efficiency Video Coding (HEVC). One of the key novelties introduced by SHVC is that it enables hybrid codec scalability. This basically means that the video layers can be encoded with different video standards providing backward compatibility between codecs. In this paper, we propose a software...
High Dynamic Range (HDR) videos are commonly compressed using existing Low Dynamic Range (LDR) coding standards. This necessarily implies a Tone Mapping (TM) stage which aims at reducing the input video range while preserving the most significant scene details. In most cases, a residual sequence is encoded and used at the decoder side to recover the HDR content. The challenge is to efficiently encode...
The latest High Efficiency Video Coding (HEVC) standard significantly improves coding efficiency over H.264/AVC, at the cost of heavy encoding and decoding complexity. For reducing HEVC decoding complexity to a target, we propose in this paper a Subjective-Quality-Optimized Complexity Control (SQOCC) approach, which optimizes subjective quality loss caused by the decoding complexity reduction. First,...
Error resilience (ER) is an important tool in video coding to maximize the quality of Experience (QoE). The prediction process in video coding became complex which yields an unsatisfying video quality when NALunit packets are lost in error-prone channels. There are different ER techniques and multiple description coding (MDC) is one of the promising technique for this problem. MDC is categorized into...
High Efficiency Video Coding (HEVC) is gradually replacing its predecessor, the H.264/AVC standard, as the state-of-the-art technology for video compression. However, H.264/AVC has dominated the market for over a decade, so that there is an enormous amount of legacy content that must be migrated. This paper proposes a fast transcoder based on an extensive data mining process on H.264/AVC decoding...
In this information age, a efficient video encoding/decoding technology will help reducing information redundancy, delaying processing, enhancing the robustness, improving visual perception of quality, increasing the compression ratio, etc. At first, this article describes the history of video encoding/decoding standards development. Research on the key technologies of H.264 coding standard currently...
The improved compression efficiency achieved by the High Efficiency Video Coding (HEVC) standard has the counter-effect of decreasing error resilience in transmission over error-prone channels. To increase the error resilience of HEVC streams, this paper proposes a checkerboard reference picture selection method in order to reduce the prediction mismatch at the decoder in case of frame losses. The...
Scalable High Efficiency Video Coding (SHVC) is the extension of the High Efficiency Video Coding (HEVC). This standard is developed to ameliorate the coding efficiency for the spatial and quality scalability. In this paper, we investigate a survey for SHVC extension. We describe also its types and explain the different additional coding tools that further improve the Enhancement Layer (EL) coding...
In the HEVC standardization process, the In-loop filter module is added with a new video coding tool called sample adaptive offset (SAO). SAO is placed after de-blocking in video coding loop. The HM implementation (HM10.0, 2013) & the standard (Bross et al., 2013) indicates picture basis in-loop filtering i.e., both de-blocking and SAO. Although standard specifies picture basis de-blocking operation,...
High Efficiency Video Coding (HEVC) is becoming more and more important in current consumer application platforms. Compared with H264 standard, it can reach up to 8192×4320 resolutions at 120fps. To accelerate HEVC decoding processing, this paper presents an efficient hardware entropy decoding architecture, Entropy decoding includes Colomb and CABAC decoding. Hierarchy ring buffer is designed to storage...
The High Efficiency Video Coding (HEVC) reference encoder includes a Uniform Reconstruction Quantization (URQ) method. This block level quantization technique does not take into account the importance of transform coefficients in terms of signal reconstruction. In this paper, we present a transform coefficient level quantization technique based on a soft thresholding approach, in which the quantization...
As the state-of-the-art video coding standard, High Efficiency Video Coding (HEVC) has been finalized in January 2013. To support the coding of multiple views and associated depth data, the development of the HEVC extension for 3D video coding is also about to be finalized. New coding unit (CU) level coding tools are added to the HEVC design to improve the compression capabilities for both video views...
The Intra Block Copy (IntraBC) is a newly adopted tool in the HEVC extension for the screen content video coding. The IntraBC tool efficiently encodes repeating patterns in a picture. The current IntraBC scheme achieves about 1.0% bit-rate reduction on average and up to 4.3% bitrate reduction on natural content video for a database consisting of 2K, 4K, and 8K sequences. In this paper, we propose...
The latest High Efficiency Video Coding (HEVC) achieves significant compression performance improvement over Advanced Video Coding (AVC). The high compression efficiency of HEVC together with the wide availabilities of H.264/AVC decoders necessitates transcoding between these two technologies. In this paper, we propose a novel algorithm for software-based HEVC to H.264/AVC transcoding. By utilizing...
This article provides an overview of standardized extensions of HEVC for the advanced coding of 3D and multiview video. In those extensions, new coding tools that better exploit the inter-view redundancy of the multiview texture videos have been developed. Additionally, dedicated tools for the improved coding of depth have been extensively studied and incorporated into the standard. In this paper,...
Performing a compression over massive video files in any network is one essential task from network and traffic management viewpoint. In the most recent times, HEVC (High Efficiency Video Coding) has stood up as new signaling protocol for performing video compression. Unfortunately, owing to the novelty in HEVC, there is less evidence of effective traffic management in prior studies. Therefore, the...
Video coding standards (e.g. H.264, HEVC) use slice, consisting of a header and payload video data, as an independent coding unit for low latency encode-decode and better transmission error resiliency. In typical video streams, decoding the slice header is quite simple that can be done on standard embedded RISC processor architectures. However, universal decoding scenarios require handling worst case...
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