刑事技术
刑事技術
형사기술
FORENSIC SCIENCE AND TECHNOLOGY
2015年
3期
218-221
,共4页
白笙学%刘涛%王昕%杨鸣
白笙學%劉濤%王昕%楊鳴
백생학%류도%왕흔%양명
视频侦查%人像静态特征%人像动态特征
視頻偵查%人像靜態特徵%人像動態特徵
시빈정사%인상정태특정%인상동태특정
video forensics%human static characteristics%human dynamic characteristics
视频侦查以提取到的与案件有关的视频为研究对象,分析视频中的人、事、物获得相关侦查线索。视频画面由多帧图像组合而成,直观性和动态连续性是视频非常显著的特点。视频反映出的信息不仅包括静态信息,也包括了各种动态信息。人像分析检验是视频侦查的重要组成部分,以动态形式显现的人像不仅能提供人像的静态特征信息,也能提供人像的动态特征信息。本文阐述了视频中人像分析检验的重点内容,即人像的静态特征和动态特征的分析和检验。在视频条件比较好的情况下,相貌、体态等人像的静态特征是人像分析检验的重点。但是对质量差、难以提取嫌疑人清晰相貌特征的视频,仅依靠分析视频中人像的静态特征无法得到更多的信息,这就需要结合人像的步态、体态等动态特征分析来获得更多有价值的信息。本文结合实际案例分析,阐明了人像特征分析检验过程是人像静态、动态等特征的综合分析过程,人像动态特征和静态特征相互关联,共同构建成人像比对基础,为视频侦查中人像的比对、认定以及案件的串并提供线索和依据。本文提出了视频人像检验的规范化流程,将有助于视频中人像特征分析检验过程的规范化和程序化,提高分析检验效率,为案件的侦破提供强有力的保障。
視頻偵查以提取到的與案件有關的視頻為研究對象,分析視頻中的人、事、物穫得相關偵查線索。視頻畫麵由多幀圖像組閤而成,直觀性和動態連續性是視頻非常顯著的特點。視頻反映齣的信息不僅包括靜態信息,也包括瞭各種動態信息。人像分析檢驗是視頻偵查的重要組成部分,以動態形式顯現的人像不僅能提供人像的靜態特徵信息,也能提供人像的動態特徵信息。本文闡述瞭視頻中人像分析檢驗的重點內容,即人像的靜態特徵和動態特徵的分析和檢驗。在視頻條件比較好的情況下,相貌、體態等人像的靜態特徵是人像分析檢驗的重點。但是對質量差、難以提取嫌疑人清晰相貌特徵的視頻,僅依靠分析視頻中人像的靜態特徵無法得到更多的信息,這就需要結閤人像的步態、體態等動態特徵分析來穫得更多有價值的信息。本文結閤實際案例分析,闡明瞭人像特徵分析檢驗過程是人像靜態、動態等特徵的綜閤分析過程,人像動態特徵和靜態特徵相互關聯,共同構建成人像比對基礎,為視頻偵查中人像的比對、認定以及案件的串併提供線索和依據。本文提齣瞭視頻人像檢驗的規範化流程,將有助于視頻中人像特徵分析檢驗過程的規範化和程序化,提高分析檢驗效率,為案件的偵破提供彊有力的保障。
시빈정사이제취도적여안건유관적시빈위연구대상,분석시빈중적인、사、물획득상관정사선색。시빈화면유다정도상조합이성,직관성화동태련속성시시빈비상현저적특점。시빈반영출적신식불부포괄정태신식,야포괄료각충동태신식。인상분석검험시시빈정사적중요조성부분,이동태형식현현적인상불부능제공인상적정태특정신식,야능제공인상적동태특정신식。본문천술료시빈중인상분석검험적중점내용,즉인상적정태특정화동태특정적분석화검험。재시빈조건비교호적정황하,상모、체태등인상적정태특정시인상분석검험적중점。단시대질량차、난이제취혐의인청석상모특정적시빈,부의고분석시빈중인상적정태특정무법득도경다적신식,저취수요결합인상적보태、체태등동태특정분석래획득경다유개치적신식。본문결합실제안례분석,천명료인상특정분석검험과정시인상정태、동태등특정적종합분석과정,인상동태특정화정태특정상호관련,공동구건성인상비대기출,위시빈정사중인상적비대、인정이급안건적천병제공선색화의거。본문제출료시빈인상검험적규범화류정,장유조우시빈중인상특정분석검험과정적규범화화정서화,제고분석검험효솔,위안건적정파제공강유력적보장。
ABSTRACT:Video investigation focuses on the videos involved in criminal cases and the relevant clues could be obtained through analyzing the persons and objects in videos. A video is composed of multi frame images, and characterized by intuitiveness and dynamic continuity. As the video provides both the static and dynamic human feature, some important characteristics can be extracted from the video, which are favorable for criminal investigation. In this paper, it is expounded that the main content of video image analysis and inspection of a human is to extract and analyze the static and dynamic characteristics. With video of high quality, the static characteristics such as the appearance and posture become the key points of video image analysis and inspection. In reality, the surveillance video is often apt to be inlfuenced by various factors, such as lamplight, bad weather, distance, image distortion. The videos recorded by the monitoring system often tend to be blurring and it is dififcult to extract the suspect’s facial features from those poor quality videos. Therefore, it is unlikely to get enough information if only relying on the static characteristics. However, movement and gait of the suspect could be totally recorded by surveillance video, which are less susceptible to the external environment. It is advantageous to combine human static and dynamic characteristics in videos to obtain more valuable information. An actual case determination indicates that both the static and dynamic characteristics could be closely interrelated, hence provides new clues for the criminal investigation and new methods for portrait comparison, suspect identiifcation as well as case linkage. At the same time, this paper proposes a standard inspection procedure of human characteristics in surveillance video, which promotes the standardization and routinization of video inspection and greatly enhance the efifciency of the analysis and inspection.