电影档案中亮度闪烁的修正  

Correction of Intensity Flicker in Film Archived

作　　者：张然然[1] 吴冏[1] 丁友东[1] 郝鹏翼[1] 

机构地区：[1]上海大学计算机工程与科学学院,上海200072

出　　处：《计算机工程》2010年第5期272-273,共2页Computer Engineering

基　　金：国家自然科学基金资助项目(60605012);上海市重点学科建设基金资助项目(J50103)

摘　　要：针对图像序列中存在亮度闪烁问题,提出一种基于运动补偿的闪烁修正方法,采用三步搜索算法对图像序列进行运动估计,准确地检测出运动区域。运用阈值法对闪烁进行判断,避免非亮度闪烁的误检测。实验结果表明,在准确地修正亮度闪烁的同时,保留原有影片所具有的亮度变化特征。与以往亮度闪烁修正方法相比,在保证影片正常视觉效果的同时缩短了修正时间。Aiming at the problem of flicker exists in image sequences, this paper proposes an approach based on motion compensation, it uses three steps search algorithm to estimate motion vectors, which can detect motion regions more accurately. Threshold method to detect flicker, avoide non-flicker regions in painting, and improve the efficiency. Experimental results show that with the accurate correction of intensity flicker, the proposed algorithm can preserve the wanted effects with similar features, and shorten the time of intensity flicker correction.

关 键 词：亮度闪烁 闪烁修正 三步搜索算法 运动估计 

分 类 号：TN911.73[电子电信—通信与信息系统]