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Surveillance visual systems play an important role in modern life, especially in the Internet of Things (IoTs) era. However, the limitation of bandwidth, energy resources and the heterogeneity of devices, networks and environments have been asking for a more powerful video coding solution, which provides not only the high compression efficiency but also the flexible scalability capability. In this...
The demand for higher quality video has increased in the past few years, due to the huge amount of electronic devices that process digital video in even higher resolutions. For that purpose, video coding techniques are used, which have, as main goal, the reduction of the required representation to process a digital video. Furthermore, embedded hardware video solutions are sought for both industry...
The Post-HEVC is the emerging video coding standard beyond the High Efficiency Video Coding (HEVC) standard. It is more complex in transformation and prediction steps but it offers the opportunity of 3D and 360° videos coding and compression. This paper presents different statistical analyzes of Post-HEVC encoded videos especially analysis on 1D and 2D transformation types and analysis on intra and...
Energy efficiency has become a primary concern in the design of multimedia digital systems, particularly when targeting mobile devices. Approximate computing is a highly promising approach to address this challenge. This paper presents an architectural exploration in a variable block size motion estimation (VBSME) architecture using imprecise Lower-Part-OR Adders (LOA). These adders were applied to...
This paper presents two intra prediction algorithms in High Efficiency Video Coding (HEVC) encoder for reducing the computational complexity and increase the encoding speed. The first algorithm takes advantage of the high spatial correlation among neighboring pixels to substitute the reference samples as the first row or first and second rows of the current block to be predicted, while the pixels...
The scalable extension (SHVC) of the High Efficiency Video Coding (HEVC) allows encoding in layers a video with multiple quality level such as resolution, bit-depth or Signal to Noise Ratio (SNR). Compared to the equivalent HEVC simulcast, the SHVC extension provides inter-layer prediction mechanisms enabling significant bit-rate savings. Moreover these inter-layer prediction mechanisms are less complex...
As part of a new MPEG-A standardization activity, called Visual Identity Management Application Format (VIMAF), this paper presents an end-to-end encryption solution of Region of Interest (ROI) in both AVC and HEVC encoded streams for privacy protection applications. This solution uses a selective encryption method that encrypts only the most sensitive information of the video and proposes a new adapted...
Intra prediction is a significant coding tool that allows a high level of video compression to be achieved in the current state-of-the-art video coding standard, High Efficiency Video Coding (HEVC), and the joint exploration model (JEM) developed by the Joint Video Exploration Team (JVET) of ITU-T VCEG and ISO/IEC MPEG for the next generation video coding standard. In intra prediction, the top and...
This work gives an efficient integer coefficient based discrete cosine transform (I-DCT) module architecture of different sizes that can be incorporated in favor of high efficiency video coding (HEVC) benchmark. This formation is optimized in terms of power and area. It is accompanied by a quantization block. Optimized constant matrix multiplication scheme is adapted to implement the I-DCT architectures...
Digital video compression techniques have an important role that makes transmission and storage of multimedia content in bandwidth and storage space limited environment efficient. This paper describes 3D video coding using FPGA encoder architecture for newer and more reliable multimedia technologies to drive the industry to improve services in the field of entertainment marketing, to encourage the...
In this paper, an investigation of multiview video coding schemes is presented, based on different inter-view prediction structures and various group of pictures (GOP) sizes. The studied inter-view prediction schemes in this paper are: A new approach namely “PIP”, recently proposed (PBI), and the benchmark structure (MVC). Results of the conducted tests allow to order the studied inter-view structures...
The High Efficiency Video Coding (HEVC) standard significantly saves coding bit-rate over the proceeding H.264 standard, but at the expense of extremely high encoding complexity. In fact, the coding tree unit (CTU) partition consumes a large proportion of HEVC encoding complexity, due to the brute-force search for rate-distortion optimization (RDO). Therefore, we propose in this paper a complexity...
The fast growth of surveillance video big data presents great challenges to the video coding technology. Most existing video coding techniques target for visual quality optimization, while the ultimate utility of surveillance videos mainly lies in intelligent analyses, e.g., pedestrian detection and vehicle tracking. In view of this, we aim at proposing an efficient, standard-compatible and simultaneously...
Video streaming applications based on Peer-to-Peer (P2P) systems are popular for their scalability, which is hard to achieve with traditional client-server approaches. In particular, layered video streaming has been much-studied due to its ability to differentiate users' streaming qualities in heterogeneous user environments. Previous work, however, has shown that user misbehavior (e.g., free-riding...
The H.264 video coding standard can greatly outperform other previous coding standards in both PSNR and visual quality. This efficiency is achieved by using several powerful coding techniques. One important technique is the variable block-size mode prediction. However, this feature results in extremely high computational complexity when the rate distortion optimization (RDO) technique is used. In...
High Efficiency Video Coding (HEVC) and VP9 are the latest state-of-the-art high-efficiency video coding standards. Both standards aim to decrease the bit-rate while improving the compression efficiency. HEVC/H.265 video standard was collaboratively developed by ITU-T and ISO/IEC with up to 50% bit-rate reduction as compared to its predecessor H.264/AVC. On the other hand, VP9 is an open source video...
AVS2 is the new generation of video coding standard developed by the Audio Video Coding Standard Working Group of China. In analogies to HEVC/H.265, a more flexible CU (coding unit), PU (prediction unit) and TU (transform unit) based coding structure is adopted to represent and organize the coding data. For intra coding, AVS2 adopts quad tree based partition coding structure on CU level, and one CU...
High Efficiency Video Coding (HEVC), the latest video standard, provides new algorithmic features that are substantial advances over those in previous standards in order to optimize the coding efficiency. HEVC performs with a high data compression ratio at the same level of video quality when compared to its predecessors, or substantially improved video quality at the same bitrate and it supports...
The High Efficiency Video Coding (HEVC) standard achieves 50% improvement incompression efficiency over the widely used H.264/AVC standard at a cost of much higher complexity. The increase in complexity is due to, among other factors, the time needed to findthe optimal partition structure among the more flexible possibilities for the coding units (CUs) and prediction units (PUs). Many classification...
In this paper, a MV derivation method based on the idea of frame rate up-conversion (FRUC) is proposed. When a block is signaled as FRUC mode, the motion information of the block is derived without signaling. Moreover, derived MVs are refined at sub-block level for more accurate motion field. In addition, two matching methods, i.e., bilateral matching and template matching are supported to obtain...
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