基于场景切变检测的视频去隔行方法  

A Deinterlacing Scheme Based on Scene Change Detection

作　　者：朱小涛[1] 王晓琦 杜小丹[3] 黄倩[1] 

机构地区：[1]河海大学计算机与信息学院,江苏南京211100 [2]南京信息技术研究院,江苏南京210036 [3]中国电子科技集团公司第二十八研究所,江苏南京210007

出　　处：《计算机与现代化》2017年第8期51-55,共5页Computer and Modernization

基　　金：国家自然科学基金资助项目(61300122;61502145)

摘　　要：本文提出一种基于场景切变检测的运动补偿去隔行方案,具体包括5部分:场景切变检测、运动估计、运动状态分析、运动一致性分析和运动补偿插值。首先,比较相邻图像的像素绝对差来判断是否存在场景切变,若存在场景切变,则只考虑后向候选运动向量,反之则进行双向预测。其次,通过运动分析来决定是否对更小尺寸的块进行运动估计。最后进行运动补偿插值。实验结果表明,相比于传统的去隔行算法,本文方案的主客观性能均有所提升。This paper proposes a motion-compensated deinterlacing scheme based on the results of scene change detection. The design idea consists of five parts： scene change detection,motion estimation,motion state analysis,motion consistency analysis and motion compensation interpolation. Firstly,absolute pixel differences between adjacent pictures are compared to determine whether scene change exists. If scene change exists,only backward motion vector candidates are considered; otherwise,bidirectional prediction is conducted. Secondly,motion analysis is utilized to determine whether the motion estimation should be performed again with a smaller block size. Finally,motion compensated interpolation is performed. Experimental results show that the proposed scheme achieves better subjective and objective results compared with conventional deinterlacing approaches.

关 键 词：场景切变 运动补偿 去隔行 运动估计 双向预测 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]