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  本文關(guān)鍵詞： NVR 視頻快速搜索 切片引擎　出處：《福州大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

【摘要】：由于和DVR相比有著顯著的優(yōu)勢(shì),網(wǎng)絡(luò)硬盤錄像機(jī)(即網(wǎng)絡(luò)視頻錄像機(jī)NVR)在視頻監(jiān)控系統(tǒng)中起到越來越核心的作用。監(jiān)控錄像回放是NVR主要功能之一,但回放功能在實(shí)際使用過程中存在一些技術(shù)問題,其中的一個(gè)問題是快速定位一個(gè)時(shí)間段內(nèi)的視頻至某個(gè)事發(fā)時(shí)間點(diǎn)。為了化解事后視頻回放定位在實(shí)際應(yīng)用中的難題,提高事件核查的效率,本NVR系統(tǒng)使用一種視頻數(shù)據(jù)快速搜索切片引擎技術(shù),它由下列部分組成：時(shí)間刻度管理器,確定搜索的視頻時(shí)間段；畫面管理器,顯示畫面的控制管理,確定每次切片的個(gè)數(shù)；視頻管理器,播放切片點(diǎn)的視頻；切片導(dǎo)航器,負(fù)責(zé)搜索時(shí)的視頻播放進(jìn)度的導(dǎo)航控制。一種視頻數(shù)據(jù)快速搜索切片引擎的搜索方法,步驟為：輸入查詢條件,搜索相關(guān)的視頻數(shù)據(jù),并將其分為至少4個(gè)切片；將所述切片按時(shí)間先后順序排序,并進(jìn)行刻度劃分,獲取每個(gè)切片的時(shí)間點(diǎn)；根據(jù)每個(gè)切片的時(shí)間點(diǎn)獲取視頻數(shù)據(jù),并將視頻輸送到相應(yīng)的畫面區(qū)域顯示；單擊選中一個(gè)視頻畫面后,對(duì)其代表的視頻時(shí)間段進(jìn)行再一次切片劃分,或退出本級(jí)切片,返回上一級(jí)切片。本文以某公司視頻監(jiān)控項(xiàng)目為背景,對(duì)上述方法的設(shè)計(jì)與實(shí)現(xiàn)做了詳細(xì)的說明。首先概述整個(gè)NVR視頻監(jiān)控系統(tǒng),對(duì)當(dāng)前使用的視頻監(jiān)控系統(tǒng)所采用體系結(jié)構(gòu)做了詳細(xì)介紹。NVR可實(shí)現(xiàn)監(jiān)控圖像的本地和遠(yuǎn)程瀏覽、錄像和回放、PTZ控制、報(bào)警聯(lián)動(dòng)與管理等功能于一體,是整個(gè)系統(tǒng)的核心。然后介紹切片引擎技術(shù)的設(shè)計(jì)思想與性能指標(biāo),以及在切片引擎實(shí)現(xiàn)過程中需要解決的技術(shù)難點(diǎn)。本文的核心工作是切片引擎的設(shè)計(jì)與實(shí)現(xiàn),主要從切片引擎的具體業(yè)務(wù)邏輯和代碼實(shí)現(xiàn)兩方面說明切片引擎的視頻搜索解決方案。切片引擎子系統(tǒng)采用模塊化的設(shè)計(jì)方法,對(duì)子系統(tǒng)各功能的接口進(jìn)行了詳細(xì)設(shè)計(jì),包括切片引擎和各個(gè)模塊間通訊的消息定義。最后對(duì)模塊的使用做了簡要說明,并且進(jìn)行性能測(cè)試,很好的解決了手工搜索錄像視頻緩慢的問題,完成了之前的工程設(shè)計(jì)目標(biāo)。
[Abstract]:Because of its significant advantages over DVR, network video recorders (DVR) play a more and more important role in video surveillance system. Video playback is one of the main functions of NVR. However, there are some technical problems in the actual use of the playback function, one of which is to quickly locate the video in a time period to a certain point of time. To improve the efficiency of event verification, the NVR system uses a video data fast search slicing engine technology, which is composed of the following parts: a time scale manager to determine the video period of search, a picture manager to display picture control and management. Determine the number of each slice, video manager, play the video slice point, slice navigator, responsible for the search of video playback progress navigation control, a video data fast search slicing engine search method, The steps are as follows: input query condition, search related video data, and divide them into at least 4 slices; sort the slices according to the order of time, divide them into scales, and obtain the time points of each slice; The video data is obtained according to the time point of each slice, and the video is transmitted to the corresponding picture area to display; after clicking to select a video picture, the video time period it represents is sliced again, or it exits the slice at this level. Based on the video surveillance project of a company, the design and implementation of the above methods are described in detail. Firstly, the whole NVR video surveillance system is introduced. The architecture of the video surveillance system used at present is introduced in detail. NVR can realize the functions of local and remote browsing, video recording and playback PTZ control, alarm linkage and management, etc. It is the core of the whole system. Then it introduces the design idea and performance index of slicing engine, and the technical difficulties that need to be solved in the process of implementing slicing engine. The core work of this paper is the design and implementation of slicing engine. This paper mainly explains the video search solution of the slice engine from two aspects of the specific business logic and code implementation of the slice engine. The interface of each function of the subsystem is designed in detail by the modular design method of the slicing engine subsystem. It includes message definition of slice engine and communication between modules. Finally, the use of the module is briefly explained, and the performance test is carried out, which solves the slow problem of manual search video, and completes the previous engineering design goal.
【學(xué)位授予單位】：福州大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TN948.6

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