"Discrete cosine transforms"

Learning Based Estimation of Video Coding Distortion

Coding distortion is a critical factor in video coding algorithms such as rate distortion optimization, rate control and optimal quantization. Accurate distortion estimation without complex pre-coding has always been highly desired. Traditional …

Native Resolution Detection for 4K-UHD Videos

There are many resolution enhancement methods to produce 4K-UHD videos including interpolation and deep learning based Super-Resolution, but lack of details, aliasing and unnatural transition are still inevitable and affect viewer's immersive …

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 …

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 …