"Video coding"

Avs Encoding Optimization with Perceptual Just Noticeable Distortion Model

Integrating efficient visual perceptual cues into standardized video coding framework can improve performance significantly. In this paper we propose to enhance AVS encoder by using the latest just noticeable distortion (JND) model to adjust DCT …

Paralleling variable block size motion estimation of HEVC on CPU plus GPU platform

The emerging HEVC standard supports up to 12 variable block sizes ranging from 4×8/8×4 to 64×64 to conduct motion estimation (ME) and motion compensation (MC). This feature contributes considerable coding gain compared with 7 variable block sizes in …

A Mesh-Based Method for Wavelet Video Coding Using Edge-Detection in Low Frequency Subband

In this paper, we propose a mesh-based method for motion estimation and compensation over low frequency subband for wavelet video coding. We concentrate on edge-detection information and apply different parameters using edge magnitude and edge angle …

Lossy and lossless intra coding performance evaluation: HEVC, H.264/AVC, JPEG 2000 and JPEG LS

High Efficiency Video Coding (HEVC), the latest international standard of video coding under development, has shown a major breakthrough with regards to compression efficiency. But most of the currently published studies were intended to evaluate the …

Improving Lossless Intra Coding of H.264/AVC by Pixel-Wise Spatial Interleave Prediction

H.264/AVC adopts many directional spatial prediction models in block-based manner that neighboring pixels on the left and top sides yield prediction for the pixels in a data block to be encoded. However, such models may adapt poorly to the rich …

Improving H.264/AVC video coding with adaptive coefficient suppression

Video coding has been widely adopted to achieve pleasant video quality at constrained bitrate. In this paper, adaptive frequency coefficient suppression directed by Human Visual System (HVS) is presented for H.264 video coding. Firstly, starting from …

Improving flexible macroblock ordering of H.264/AVC

H.264/AVC is the latest video coding standard from ITU-T. It provides superior and efficient video coding at low bit rates. Flexible macroblocks ordering (FMO) is an error-resilient tool included in H.264/AVC. In this paper, a novel technique for …