基于因果的自适应双阈值镜头边界检测算法  

An Adaptive Double Threshold Shot Boundary Detection Method Based on Cause and Effect

作　　者：孙少卿[1] 卓力[1] 赵士伟[1] 张菁[1] 

机构地区：[1]北京工业大学信号与信息处理研究室,北京100124

出　　处：《测控技术》2009年第5期19-23,共5页Measurement & Control Technology

基　　金：国家自然科学基金资助项目(60772069);国家863计划资助项目(2009AA12Z111)

摘　　要：将因果检测法与双阈值法相结合,提出了一种基于因果的自适应双阈值镜头边界检测算法。首先,利用相邻两帧之间的帧间差异值对突变和渐变进行预检;然后,加入渐变检测容忍度、边缘和非相邻帧间差异值等信息,对初检结果进行复检,排除闪光灯、剧烈物体运动、淡入、淡出以及溶解等造成的误检和漏检,以提高整体检测效果。实验结果表明,与传统的双阈值镜头检测方法相比,本方法可获得更好的检测性能。Combined the cause and effect method with the double threshold old shot boundary detection method based on the cause and effect method method, an adaptive double threshis proposed. First, the frame difference of two adjacent frames is applied to perform the pre-detection of cut and gradual transition. Then, the information of tolerance, edge and non-adjacent frame difference is combined to confirm the pre-detected shot boundaries. The false and miss shot boundaries caused by flashlight, object motion, fade in, fade out and dissolve are removed in order to improve the overall detection performance. Compared with the traditional double threshold based shot boundary detection method, the experimental results show that the proposed method can achieve a better detection performance.

关 键 词：镜头边界检测 自适应双阈值 因果法 帧间差异值 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]