نتایج جستجو برای: high efficiency video coding
تعداد نتایج: 2571602 فیلتر نتایج به سال:
Prediction in HEVC exploits the redundant information fame to improve compression efficiency. The computational complexity of prediction is comparatively high as it recursively calculates depth by comparing rate-distortion optimization cost (RDO) exhaustively. deep learning technology has shown a good mark this area compared traditional signal processing because its content-based analysis and a...
The status of high efficiency video coding development is reviewed based on public available documents in HEVC version 4 standardization process. Here, the requirements and results of call for proposals on screen content coding (SCC) tools for HEVC are presented. The most significant additional coding tools are highlighted. To achieve high coding efficiency in SCC-HEVC, new coding tools that ex...
7 ABSTRACT: Emerging High efficiency video coding (HEVC) is expected to be widely adopted in network applications for high definition devices and mobile terminals. Thus, construction of HEVC’s encryption schemes that maintain format compliance and bit rate of encrypted bit stream becomes an active security’s researches area. This paper presents a novel selective encryption technique for HEVC vi...
In the emerging high efficiency video coding (HEVC) standard, a Golomb-Rice code is adopted to binarize level information. The Golomb-Rice code is optimal for encoding symbols with the exponential probability distribution. In general, quantized transform coefficients of natural images show the exponential probability distribution. However, screen contents usually have a totally different probab...
This paper presents a pixel-by-pixel spatial prediction method for lossless intra coding within High Efficiency Video Coding (HEVC). A well-known previous pixel-by-pixel spatial prediction method uses only two neighboring pixels for prediction, based on the angular projection idea borrowed from block-based intra prediction in lossy coding. This paper explores a method which uses three neighbori...
A large-capacity information hiding algorithm for HEVC is proposed. We modify the intra prediction modes in 4x4 luminance blocks to embed secret information. According to the probability distribution of the statistical optimal prediction mode and suboptimal prediction mode, we are establishing a mapping relationship between prediction modes and secret information. Modifying the intra prediction...
In current interframe video compression systems, the encoder performs predictive coding to exploit the similarities of successive frames. The Wyner-Ziv Theorem on source coding with side information available only at the decoder suggests that an asymmetric video codec, where individual frames are encoded separately, but decoded conditionally (given temporally adjacent frames) could achieve simi...
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