Adaptive LZMA-based coding for screen content

Screen content refers to image/video generated by electronic devices. Existing state-of-art image/video coding standards don´t exploit the anisotropic features. This paper proposes an adaptive LZMA-based coding scheme for screen content to achieve better coding efficiency. Adaptive scanning and directional matching are incorporated into LZMA in our scheme. Both of them exploit the directional correlations in screen content to increase the matching probability of LZMA, and thus achieve better coding performance. Experimental results show that the proposed scheme significantly outperforms existing LZMA-based coding schemes on screen content coding.