Modeling of 2D+1 texture movies for video coding

作     者：Valaeys, S Menegaz, G Ziliani, F Reichel, J 

作者机构：Swiss Fed Inst Technol Audio Visual Commun Lab CH-1015 Lausanne Switzerland VisioWave SA CH-1024 Ecublens Switzerland 

出 版 物：《IMAGE AND VISION COMPUTING》 (图像与视觉计算)

年 卷 期：2003年第21卷第1期

页      面：49-59页

核心收录：

学科分类：0808[工学-电气工程] 08[工学] 0835[工学-软件工程] 0812[工学-计算机科学与技术（可授工学、理学学位）] 0702[理学-物理学] 

主　　题：model-based coding dynamic textures dynamic coding 

摘      要：We propose a novel model-based coding system for video. Model-based coding aims at improving compression gain by replacing the non-informative image elements with some perceptually equivalent models. Images enclosing large textured regions are ideal candidates. Texture movies are obtained by filming a static texture with a moving camera. The integration of the motion information within the generative texture process allows to replace the real texture with a visually equivalent synthetic one, while preserving the correct motion perception. Global motion estimation is used to determine the movement of the camera and to identify the overlapping region between two successive frames. Such an information is then exploited for the generation of the texture movies. The proposed method for synthesizing 2D + 1 texture movies is able to emulate any piece-wise linear trajectory. The compression performance is very encouraging. On this kind of video sequences, the proposed method improves the compression rate of an MPEG4 state-of-the-art video coder of an order of magnitude while providing a sensibly better perceptual quality. Importantly, the current implementation is real-time on Intel PIII processors. (C) 2002 Elsevier Science B.V. All rights reserved.