Summary
International Technical Conference on Circuits/Systems, Computers and Communications
2008
Session Number:P1
Session:
Number:P1-58
A Consideration of Spatial Video Coding Schemes for Updatable Video Delivery
Mei Kodama,
pp.-
Publication Date:2008/7/7
Online ISSN:2188-5079
Summary:
Recently, over the broadband internet, we had often used many video and music contents supported by MPEG-1,2,4, H.261, H.263, H.264/AVC video coding standards. In video coding standards, layer coding methods had been studied by many researchers and for example, SNR scalability, spatial scalability and temporal scalability had been adopted. In addition, we had proposed “the concept of updatable scalable video coding (USVC)za considering the functionality of video data. It shows the renewal of video quality for video data from the viewpoints of coding distortion and image resolutions and so on. In this study, we focus on data prediction of DCT coefficient domain, the coding efficiency of USVC for the change of quantization accuracy using quantization parameters based on coding controller. Especially, spatial scalable coding types are used. In the theoretical approach, the prediction coding of differential data among layers is proposed newly. By the simulation results, the relation between the coding tendency of some test sequences and quantization parameters in low quality and high quality layers are shown.