This paper presents a frame-level adaptive search range scaling strategy for B pictures coding for H.264/AVC from the hardware-oriented viewpoint. After studying the relationship between search range of P and B picture, a simple search range scaling strategy is proposed at first, which is efficient for normal or low motion video. After that, this strategy is extended to high motion video by usi...

Video Compression has played an important role in Multimedia data storage and transmission. Video compression techniques removes spatial as well as temporal redundancy using intra-frame and inter-frame coding respectively. A large level of compression can be achieved through inter-frame coding. In this paper, three step search with track knowledge has been analyzed by comparing its performance ...

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 new characteristic waveform (CW) interpolation coder is proposed in this paper. In the proposed coder, two characteristic waveforms are extracted from LPC residual signal at each frame. The Waveform Interpolation (WI) is operated within the frame. In the novel WI, variable dimension vector quantization (VDVQ) and power vector quantization are proposed and the low frequency band (LFB) and high...

This paper proposes simulation of Intra frame coding in Advanced Video Coding Standard using Intra Prediction. The simulation results of Compression ratio and PSNR for with and without prediction are presented using Matlab. To perform Intra frame coding in AVC requires intra prediction in intra prediction there are nine prediction modes such as vertical, horizontal, dc,diagonal down left, diago...

Article history: Received 30 October 2012 Accepted 17 June 2013 Available online 29 June 2013

Accurately tracking the fundamental frequency (f0) or pitch in speech data is of great interest in numerous contexts. All currently available pitch tracking algorithms perform a short-term analysis of a speech signal to extract the f0 under the assumption that the pitch does not change within a single analysis frame, a simplification that introduces errors when the f0 changes rather quickly ove...

This paper proposes an enhancement layer truncation scheme for the Fine-Granularity-Scalability (FGS) video. Our target is to minimize the quality variation of different parts within each frame when the last transmitted enhancement layer is truncated according to the available network bandwidth. We propose to redistribute the bits in the enhancement layer that can only be partially kept with th...

This paper presents an approach to detection of hard cuts in video based on simple boosted classifiers and a large set of intra-frame distance measures, which are extracted from pairs of images in small local neighborhood. The performance of the proposed approach is evaluated on the test data from TRECVID 2007 shot boundary detection task.

According to H.264 video coding standard, spatial prediction is used for intra block coding. The luma prediction may be based on 4×4 block, for which there are nine prediction modes, or 16×16 macroblock., for which four prediction modes. For chroma prediction, there are also four prediction modes. In this paper, a new method is proposed for improving the intra prediction algorithm, the first st...