Network Video Recorder System Of Slice Engine Technology

Because the Network NVR (network video recorder NVR)has a significant advantage compared to DVR play an increasingly central role in video surveillance systems. Surveillance video playback is one of the main functions of NVR, but there are some technical problems playback in actual use, a problem which is quickly locate a particular period of time between the time of the incident the video to the point.In order to resolve the post-video playback locate problems in practical applications to improve the efficiency of the verification event, the NVR system uses a slice of video data quickly search engine technology, which consists of the following components:Timescale Manager to determine if the search video period; screen manager, display control and management, to determine the number of each slice; video manager, play video slicing point; Slice Navigator, responsible for searching the video playback progress navigation controls. A video data slice quick search engine search method steps:input query, search for relevant video data, and divided into at least four sections; said slice chronological sequencing and scale division, Get the point in time of each slice; according to the time point of each slice to obtain the video data, and video transmission to the appropriate area of the screen display; click to select a video screen, its time period on behalf of the video once again sliced into, or withdraw from the class section, the return on a slice.In this paper, in the background of video monitoring project for a company design and describe the implementation in detail.First outlined the entire NVR video surveillance systems, video surveillance systems currently in use are made using the architecture described in detail, NVR enables local and remote monitoring image browsing, recording and playback, PTZ control, alarm linkage and management functions in one, is the core of the whole system.Then describes the design idea slicing engine technology and performance indicators to achieve environmental and related hardware and software technologies used. The core work of this article sliced design and implementation, mainly from the slice engine specific business logic and code to achieve two slices side note video search engine solutions. Slice engine subsystem modular design method, for each functional subsystem interfaces were designed in detail, including the slicing engine and message definition of communication between the various modules.Finally, the use of modules are briefly described, and performance testing, a good solution to the problem of slow manual search for videos, completed the design target of the project design before.