Advanced video coding standards have become widely deployed in numerous products, such as multimedia service, broadcasting, mobile television, video conferences, surveillance systems and so on. New compression techniques are gradually included in video coding standards so that a 50% compression rate reduction is achievable every ten years. However, dramatically increased computational complexit...

An improved Context-based Adaptive Binary Arithmetic Coding (CABAC) is presented in the paper. The idea for the improvement is to use a more accurate mechanism for estimation of symbol probabilities in the standard CABAC algorithm. The authors’ proposal of such a mechanism is based on the Context-Tree Weighting (CTW) technique. In the framework of HEVC video encoder the improved CABAC allows 1....

Drift error is a critical issue in video scrambling which is widely used to protect privacy in surveillance video. However, how to improve video coding efficiency while preventing drift error in video scrambling has not been covered in most studies. Proposed is a prediction restricted scheme for H.264/AVC privacy protected video scrambling. Experiments show that the proposed scheme dramatically...

With the introduction of the H.264/AVC video coding standard, significant improvements have recently been demonstrated in video compression capability. The Joint Video Team of the ITU-T Video Coding Experts Group (VCEG) and the ISO/IEC Moving Picture Experts Group (MPEG) has now also standardized a scalable video coding (SVC) extension of the H.264/AVC standard. SVC enables the transmission and...

We consider a Wavelet Based Video Coder: Our proposed blocks are based on Second Generation Wavelets (SGW), a mathematic transform, successfully applied in (t+2D) coding. We apply on video images, the mathematical transform to locate and to encode results of the motion compensation process. This signal processing theory allows a well adapted coding of high frequencies. These wavelets can be des...

In this paper, a basic framework for efficient scalable video coding, namely progressive fine granularity scalable (PFGS) video coding is proposed. Similar to the fine granularity scalable (FGS) video coding in MPEG-4, the PFGS framework has all the features of FGS, such as fine granularity bit-rate scalability, channel adaptation, and error recovery. On the other hand, different from the FGS c...

To combat with lagging rate control (RC) parameter setting in encoding video sequences with discontinuous scenes, a novel RC algorithm at group of picture (GOP) level is proposed for high efficiency video coding (HEVC) in this paper. Firstly, the variation of GOP is analyzed and used to detect the discontinuous scene. Then, a new bit allocation algorithm is presented by constructing the correla...

-In this paper, area-efficient architectures for the implementation of integer discrete cosine transform (DCT) of different lengths to be used in High Efficiency Video Coding (HEVC) are proposed. An efficient constant matrix multiplication scheme can be used to derive parallel architectures for 1-D integer DCT of different lengths such as 4, 8, 16, and 32. Also power-efficient structures for fo...

A novel multi-order-residual-prediction (MORP) coding approach is proposed to improve spatial prediction efficiency in video coding. We observe that the compression ratio of a video coding algorithm depends on the nature of sequences as indicated by the ratio between inter and intra blocks in the bit-stream. When the percentage of intra blocks increases, the prediction efficiency decreases, thu...

—Due to the problems of the new generation of video coding standard HEVC (High-Efficiency Video Coding), such as high computational complexity and the large computation, This paper proposes a fast inter-mode decision algorithm based on image texture features and by using Sobel operator the edge features are extracted from CU which is partitioned by simulation, and then the final partitioning s...