3-5 A Study on Adaptive Scanning in Recursive Type Intra Prediction

Abstract

We previously reported on the still image coding scheme based on recursive type intra prediction. In this scheme, predicted values in each block were always generated in horizontal raster scan order. In this paper, we extend the method to allow the vertical raster scan order as well. Moreover, appropriate arrangement of reference pels used in the prediction is explored under the condition of adaptively switching both the scan orders.