三維視訊監控虛擬實境系統

摘要監控系統在現代扮演者非常重要的角色，對於人身安全以及財產保護等都起了極大的作用。而傳統監控方式屬於較被動的方式，而不是事前預防狀況發生。另一問題是，越大的監控場域中需要更多的人力成本，且有場景誤判等情況。我們察覺了在傳統監控模式中有以上常見問題，希望藉由現代科技虛擬實境技術來解決和避免這些問題。因此我們提出了透過VR設備在三維的場景中進行監控。包含了以下特點： 1. 使用3D場景進行監控，改善單一畫面難以得知其地域資訊問題。 2. 易於擴充功能的系統，輔助監控者完成更複雜的任務。 3. 直覺、簡單易用的操作方式進行監控。首先我們給出了重建大範圍場景的方法，藉此產生監控場景的三維模型。接著透過編輯系統設定檔來更新三維模型及監控攝影機，各監控攝影機的即時影像會於在三維場景中對應的位置即時貼圖呈現。我們的系統保持了良好的擴充性可與外部程式溝通，藉此實現分散式運算功能，用少量的硬體資源增加系統功能，降低硬體成本需求。於系統中透過VR設備在執行監控任務時可快速的變換當前位置，可透過選單選擇預先設定的地標或巡邏點或透過其瀏覽模式如飛行、拖移場景、鷹眼模式等隨時掌握當下狀況。在系統中也包含移動偵測/提示以及區域人口密度等輔助功能來協助監控者。相較傳統監控模式，透過VR於三維場景中進行監控任務可以用更直覺且簡易的操作方式提高監控者的警覺與監控效率，以更少的人力執行更複雜的任務。

關鍵字

虛擬實境；監控系統；三維

並列摘要

Abstract Surveillance systems serve an important role in modern society, as it secures both human safety and property protection effectively. Traditional surveillance systems are used passively, often used to review footages after incidents instead of preventing them. Traditional surveillance systems also need a large increase in manpower in proportion to the scale of the surveillance area along with mistakes in finding the exact location. We observed that traditional surveillance systems have the above common problems, and hope to use modern technology Virtual Reality (VR) to solve and avoid these problems. Thus, we proposed to integrate VR devices and monitor the surveillance area in 3D space. The features and benefits of our system includes: 1. Improved locating ability by the use of 3D models over only 2D images. 2. Easily expandable system to assist the surveillant to complete complex work. 3. Straightforward and easy to use interface to easily navigate through the surveilling area. First we provided a method to reconstruct a large scale 3D model to generate a 3D model of the surveillance area. Then 3D models and camera options can be modified and updated through editing the system configuration files. The video stream from each camera will be displayed by real-time texturing on the corresponding location in the 3D scene. Our system provides good expandability and is able to communicate with external processes to achieve distributed computing, using a small amount of hardware resource to increase system functionality, reducing hardware cost requirement. Location and view can be quickly changed to handle various situations with the VR device when surveilling in our system by going into the menu and selecting a preset landmark or patrol area or by navigating with movements such as flying, scene dragging, and eagle view. Our system also includes motion detection and population density map features to assist the surveillant. Compared to traditional surveillance systems, surveilling through a VR 3D system is more straightforward and simple to navigate and increases the surveillants awareness and effectiveness, reducing the manpower needed to perform more complex work.