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引言视频监控是平安城市建设的重要组成部分。监控图像是证据体系中不需要其他证据佐证、法院可以直接采用的证据,在预防犯罪、预警联动、侦破案件及保障重大活动中起着越来越明显的作用。无论系统是何种构架、如何先进,最终还是要反映在图像的清晰度和真实性上,因此高清化已成为视频监控发展的主要方向。色彩的真实度在证据中具有重要的作用,如果图像色彩数据丢失,将造成证据使用证明力的降低。刑侦部门往往会发现发生在白天的案件在监控视频里是彩色的,也是清晰的,但夜间的视频监控图像效果始终不尽人
Introduction Video surveillance is an important part of safe city construction. Monitoring images is evidence evidence system does not require other evidence to prove that the court can directly use the evidence in crime prevention, early warning linkage, detect cases and safeguard the major activities play an increasingly significant role. No matter what kind of architecture the system is and how advanced it is, finally, it should still be reflected in the clarity and authenticity of the image. Therefore, HD has become the main direction for the development of video surveillance. The trueness of color plays an important role in the evidence. If the color data of the image is lost, it will reduce the proof of use of evidence. Criminal Investigation Department will often find cases occurred in the daytime surveillance video is colored, but also clear, but the night video surveillance images are always endless effect