The rate-distortion optimization (RDO) method in the H.264/AVC encoder is an informative technology that improves the coding efficiency, but increases the computational complexity. In this letter, a fast Intra mode decision algorithm using DCT (Discrete Cosine Transform) coefficients distribution is proposed to reduce the H.264 encoder complexity. The proposed method reduces the encoder complex...

In this paper, we propose a bit-rate control algorithm for H.264/AVC using the rate and distortion model estimated by the histogram of DCT coefficients. Since the proposed algorithm induces the rate and distortion model from the current macroblock instead of the previous coded frame or macroblock, it can effectively prevent the fluctuation of the output bits especially when scene change occurs,...

Screen content coding (SCC) is becoming increasingly important in various applications, such as desktop sharing, video conferencing, and remote education. When compared to natural cameracaptured content, screen content has different characteristics, in particular sharper edges. In this paper, we propose a novel intra prediction scheme for screen content video. In the proposed scheme, bilinear i...

High Efficiency Video Coding (HEVC or H.265), the latest international video coding standard, displays a 50% bit rate reduction with nearly equal quality and dramatically higher coding complexity compared with H.264. Unlike other fast algorithms, we first propose an algorithm that combines the CU coding bits with the reduction of unnecessary intra-prediction modes to decrease computational comp...

Scalable video coding provides an efficient solution to support video playback on heterogeneous devices with various channel conditions in heterogeneous networks. SHVC is the latest scalable video coding standard based on the HEVC standard. To improve enhancement layer coding efficiency, inter-layer prediction including texture and motion information generated from the base layer is used for en...

Abstract Video transcoding method usually reduces coding complexity with the cost of reducing efficiency. It is necessary to design a video transcoder can achieve better trade-off between efficiency and complexity. This paper proposes an efficient based on improved rate distortion optimization motion vector (MV) reuse. First, we use temporal dependent implement rate-distortion (RDO) at level Co...

In this paper, a novel multi-fidelity modelling-based optimisation framework is developed for the robust design of composite structures. The proposed provides significant savings on computation time compared to both conventional and high-fidelity modelling methods while maintaining an acceptable level accuracy. Artificial neural networks (ANNs) multi-level approach are incorporated into formula...

Draft 1 of 3D-HEVC Test Model Description Ed. Notes (D0) (based on N12744)  (3D08/JCT3V-A0126) (T,N) Simplified disparity derivation  (3D16) Moved 3D-tool related flags from SPS to VPS, removal camera parameters  (3D09/JCT3V-A0049) (N) Inter-view motion prediction modification  (3D13/JCT3V-A0119) (T) VSO depth fidelity  (3D07/JCT3V-A0070) (T,N) Region boundary chain coding for depth maps ...

We introduce new algorithms for deciding the satissability of constraints for the full recursive path ordering with status (RPO), and hence as well for other path orderings like LPO, MPO, KNS and RDO, and for all possible total precedences and signatures. The techniques are based on a new notion of solved form, where fundamental properties of orderings like transitivity and monotonicity are tak...

In reality all the engineering products are likely to deviate from their expected performance due to the presence of variations. The variations can cause any product optimization to easily fall into sub-optimal regime. In present adopted methodology, the robust design optimization (RDO) of the objective function makes performance insensitive to the variations/uncertainties. A hybrid optimizatio...