计算机工程

• 图形图像处理 • 上一篇    下一篇

基于Codebook的运动补偿内插方法

田绪婷,郭丹   

  1. (合肥工业大学 计算机与信息学院,合肥 230009)
  • 收稿日期:2015-08-02 出版日期:2016-09-15 发布日期:2016-09-15
  • 作者简介:田绪婷(1991-),女,硕士研究生,主研方向为多媒体信息检索、数字图像处理;郭丹,副教授。
  • 基金项目:
    国家自然科学基金资助项目(61305062);中国博士后科学基金资助项目(2012M511403);安徽省自然科学基金资助项目(1308085QF102)。

Motion-compensated Interpolation Method Based on Codebook

TIAN Xuting,GUO Dan   

  1. (School of Computer and Information,Hefei University of Technology,Hefei 230009,China)
  • Received:2015-08-02 Online:2016-09-15 Published:2016-09-15

摘要: 为提高帧率转换的有效性,提出一种基于Codebook的视频运动补偿内插方法。该方法应用传统块匹配方法得到运动矢量,利用Codebook模型实现背景区域和前景区域的分割并对前景区域的运动矢量进行可变块处理,同时使用块合并算法保证前景区域物体边缘结构信息的完整性,通过矢量中值滤波器和矢量平滑对前景区域进行处理以消除重影现象和方块效应。实验结果表明,与线性插帧、矢量中值滤波、轻决策运动估计方法相比,该方法能得到更加精确和鲁棒的前景区域,满足人们对视觉效果的高质量需求。

关键词: Codebook模型, 可变块, 运动补偿, 运动矢量, 前景区域

Abstract: In order to enhance frame rate conversion,a video motion-compensated interpolation method based on Codebook is proposed.In this paper,the Motion Vector(MV) is obtained by using the traditional block matching method.In addition,the Codebook model is used to obtain background and foreground regions.Then,a variable block processing method is applied in foreground region.Meanwhile,a block merging algorithm is used to guarantee the integrity of the edge structure of the object in the foreground region.Vector Median Filter(VMF) and vector smoothing are used to deal with the foreground region,which can effectively reduce the shadow phenomenon and block effect.Experimental results show that the application of Codebook in motion-compensated interpolation method can get more accurate and robust foreground area than Liner Frame Interpolation(LFI),VMF and soft-decision motion estimation method.It can meet people’s demand for high quality visual effects.

Key words: Codebook model, variable block, motion-compensation, Motion Vector(MV), foreground region

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