数据分析在疑难案事件视频侦查中的应用

Application of Data Analysis into Investigating Difficult Video Cases

在案事件视频分析过程中,由于拍摄距离远,拍摄角度偏等原因,经常碰到一些视频中的关键信息肉眼难以直观发现,视频现象难以清晰解释的情况,仅仅借助视频增强的一些方法无法解决这些难题,获得案事件的关键信息。针对这一问题,借鉴数据分析的技术思路和方法,本文提出一种案事件视频数据分析的方法,将视频内容的关键变化映射为视频颜色空间参数的数据变化,研究该数据时间序列变化规律,从而反映视频关键内容的变化。本方法在一些疑难案事件视频分析中取得了良好的效果,拓展了视频侦查的思路,供相关从业人员参考。

For investigation of video cases/events,such occurrence is often met as videos have been snapped from long distance and/or deflected angle,resulting in either naked eyes to hardly detect key video information or video scenarios unable to explain clearly.Only relied on methods of video enhancement,can neither these problems be solved nor key information obtained about the case.To address this issue,an approach was here proposed with video data analysis.Similar to the technical ideas and methods adopted with the other popular applications and practice about data analysis,the involving video was converted of its key changing contents into fluctuant parametric data representing the video’s color space,hence having the video’s key changing contents reflected with the fluctuating data along with time elapsing.This method has achieved remarkable feats in investigation of some difficult video cases.Valuable reference should be also offered for peers to expand their ideas about video analysis.