基于动态阈值的视频场景切换检测①孙孟寒1,任维政21(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)通信作者:任维政,E-mail:renwz@bupt.edu.cn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(orientedFASTandrotatedBRIEF)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.关键词:场景切换检测;图像特征;ORB;特征点提取;相似度估计;动态因子引用格式:孙孟寒,任维政.基于动态阈值的视频场景切换检测.计算机系统应用,2023,32(2):234–241.http://www.c-s-a.org.cn/1003-3254/9004.htmlVideoSceneSwitchingDetectionBasedonDynamicThresholdSUNMeng-Han1,RENWei-Zheng21(SchoolofElectronicEngineering,BeijingUniversityofPostsandTelecommunications,Beijing100876,China)2(SchoolofAutomation,BeijingUniversityofPostsandTelecommunications,Beijing100876,China)Abstract:Videosceneswitchingdetectionisimportantinvideoprocessing.Anexcellentalgorithmforvideosceneswitchingdetectionisofgreatsignificanceforsubsequentvideoprocessing,includinginformationannotationandfeatureextraction.Inthisstudy,onthebasisofthetraditionalimageprocessingmethodsandorientedFASTandrotatedBRIEF(ORB),thesimilarityestimationofimagesisrealizedseparately.Throughthedynamicfusionfactor,thevalueofsimilarityobtainedbyvariousbasicalgorithmsinthecompletealgorithmisquantified,andthedynamicthresholdiscalculatedaccordingtothesimilarityofneighboringframestoimprovethestabilityofthealgorithm.Inaddition,byflowplanning,thenumberofcallsofthetime-consumingpartofthealgorithmisreduced,andefficientvideosceneswitchingdetectionisfinallyrealized.Theexperimentalresultsshowthattheaccuracyofvideosceneswitchingdetectionisimprovedtoacertainextent.Keywords:sceneswitchingdetection;imagefeatur...
