一种适用于遮挡问题的运动补偿帧插值方法  

Motion Compensated Frame Interpolation Method Applied for Occlusion Issue

作　　者：赵建伟[1] 王朋[1] 刘重庆[1] 

机构地区：[1]上海交通大学图像处理与模式识别研究所,上海200030

出　　处：《电子与信息学报》2004年第5期771-776,共6页Journal of Electronics & Information Technology

摘　　要：针对二维运动估计中常出现的遮挡问题,提出一种基于网格模型的运动补偿自适应帧插值技术,将图像帧中分为3种不同区域,根据各自的特点分别进行运动估计和运动补偿插值。在准确检测遮挡区域前提下,单独对遮挡区域处理有效地减小了运动估计误差。提出采用特征窗口运动补偿匹配的方法进行网格节点运动矢量估计,消除了传统块匹配方法导致的块效应,得到了亚像素的匹配精度。实验证明,该方法简单易行,有效地解决了遮挡区域的运动估计问题,插值图像具有较好的视觉效果。A motion compensated adaptive frame interpolation technique based on mesh model is proposed considering occlusion issue existed in two-dimensional motion estimation. The whole image is divided into three types of regions in order to perform motion estimation and motion compensated frame interpolation respectively. A more accurate occlusion detection method is presented to improve the precision of detection, which is the main premise of the adaptive interpolation. The motion estimation error introduced by occlusion regions is reduced effectively. Mesh node motion estimation based on feature window matching is used to achieve sub-pixel resolution and overcome block artifacts produced by block matching. Experimental results indicate that the proposed algorithm is easy to implement, and solves motion estimation problem existed in occlusion regions effectively. The interpolated image shows better visual performance.

关 键 词：运动补偿帧插值 运动估计 网格模型 遮挡 矢量估计 

分 类 号：TN919.81[电子电信—通信与信息系统]