A Video Coding Framework with Spatial Scalability

A new video coding paradigm, distributed video coding, has been the focus of many recent studies. In this paper we present a simple video coding framework, based on the principles of distributed coding, that can be applied to any video coding standards with minor modifications. The framework allows spatial scalability of the non-reference frames, and does not need any feedback channel between the encoder and decoder. The complexity in the encoder is reduced since the non-reference frames are coded at lower spatial resolution. At the decoder, side-information is generated using the reference frames through motion estimation and compensation. Results using the H.263+ standard are shown. Keywords— spatial scalability, Wyner-Ziv, low complexity coding