Scalable Video Coding based on Updateable Scalability

Abstract

We propose scalable video coding for t,he scalability function with "bitstream enhancer", to update scalable bitstream outside. The scalability is to provide various size of video image suitable for any decoder from a coded bitstream. In order to solve any problems of scalable video coding for scalability function now, we propose updatable scalability. And one method of updatable scalability, we think about modified simulcast coding added to mode controller between low resolution layer and high resolution layer. As the simulation result, coding efficienty of this coder is almost the same asthat of SNR scalability coder.