基于动态阈值的视频场景切换检测  

Video Scene Switching Detection Based on Dynamic Threshold

作　　者：孙孟寒 任维政 SUN Meng-Han;REN Wei-Zheng(School of Electronic Engineering,Beijing University of Posts and Telecommunications,Beijing 100876,China;School of Automation,Beijing University of Posts and Telecommunications,Beijing 100876,China)

机构地区：[1]北京邮电大学电子工程学院,北京100876 [2]北京邮电大学自动化学院,北京100876

出　　处：《计算机系统应用》2023年第2期234-241,共8页Computer Systems & Applications

摘　　要：视频场景切换检测在视频处理领域十分重要,优秀的视频场景切换检测算法对于视频的后续处理,包括信息标注与特征提取等都具有很大的意义.本文以传统的图像处理方法为基础,结合ORB(oriented FAST and rotated BRIEF)快速特征描述子,分别实现图像的相似度估计.通过动态融合因子,将多种基本算法得到的相似度在完整算法中的价值量化,并根据邻帧相似度计算动态阈值,从而提高了算法的稳定性;另外通过流程规划,减少了算法中耗时长的部分的调用次数,最终实现了高效的视频场景切换检测.实验结果表明,视频场景切换检测的准确率有一定程度地提升.Video scene switching detection is important in video processing.An excellent algorithm for video scene switching detection is of great significance for subsequent video processing,including information annotation and feature extraction.In this study,on the basis of the traditional image processing methods and oriented FAST and rotated BRIEF(ORB),the similarity estimation of images is realized separately.Through the dynamic fusion factor,the value of similarity obtained by various basic algorithms in the complete algorithm is quantified,and the dynamic threshold is calculated according to the similarity of neighboring frames to improve the stability of the algorithm.In addition,by flow planning,the number of calls of the time-consuming part of the algorithm is reduced,and efficient video scene switching detection is finally realized.The experimental results show that the accuracy of video scene switching detection is improved to a certain extent.

关 键 词：场景切换检测 图像特征 ORB 特征点提取 相似度估计 动态因子 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]