## 3 Materials and Methods
### Selection of the Intelligent CPTED Systems for Evaluation
#### 3.1.2 Selection of Intelligent Crime Prevention Technologies  
Crime prevention technology refers to the technology that supports activities to prevent crimes, and it has been rapidly evolving since the advent of the 4 th Industrial Revolution. CCTV systems, which serve as the key crime prevention technology and the primary means of solving incidents and accidents, provide monitoring through integrated operations at municipal control centers. However, compared to the increasing number of CCTV systems, the number of monitoring personnel is limited, and some point out that it has poor effectiveness due to an increased workload and a missed critical time in crimes. To overcome these limitations in traditional control, many efforts are being made to upgrade \begin{table}
\begin{tabular}{p{113.8 pt} p{113.8 pt} p{113.8 pt} p{113.8 pt}} \hline \hline
**Principle of CPTED** & \begin{tabular}{c} **Architectural Urban** \\ **Planning Element** \\ \end{tabular} & **CPTED Code** & \multicolumn{1}{c}{**Implementation Plan**} \\ \hline Natural surveillance & \begin{tabular}{c} Roads \\ \end{tabular} & Roads (R) & \begin{tabular}{c} Natural surveillance on roads and CCTV \\ systems installed to prevent crimes \\ \end{tabular} \\ \cline{2-4}  & Lighting & Lighting (L) & \begin{tabular}{c} Lights installed to prevent crimes at night on \\ roads or in buildings \\ \end{tabular} \\ \hline Natural access control & Buildings & Buildings (B) & \begin{tabular}{c} Access control systems in buildings to prevent \\ intrusion by outsiders \\ \end{tabular} \\ \hline \multirow{4}{*}{\begin{tabular}{p{113.8 pt} p{113.8 pt} p{113.8 pt}} Activity support/ maintenance management \\ \end{tabular} } & Community facilities & Community (C1) & \begin{tabular}{c} Community facilities established to prevent \\ crimes and encourage activities \\ \end{tabular} \\ \cline{2-4}  & Parks & Parks (P1) & \begin{tabular}{c} Walkways improved to promote the use of parks \\ and prevent crimes \\ \end{tabular} \\ \cline{2-4}  & Use/place & Use/place (U) & \begin{tabular}{c} Discovery and improvement of local space to \\ resolve crime-vulnerable areas \\ \end{tabular} \\ \cline{2-4}  & Parking & Parking (P2) & \begin{tabular}{c} Improved parking environment and \\ maintenance \\ \end{tabular} \\ \cline{2-4}  & Urban control & Control (C2) & \begin{tabular}{c} Crime prevention services based on municipal \\ control for monitoring crime-prone areas \\ \end{tabular} \\ \hline Territorial & \
\begin{tabular}{c} Guide \\ hardening \\ \end{tabular} & Guide & Guide (G) &
\begin{tabular}{c} Local safety information provided to reinforce \\ territoriality and harden targets in towns \\ \end{tabular} \\ \hline \hline \end{tabular}
\end{table} 
Table 1: Architectural urban planning element. the crime prevention system by incorporating intelligent technologies, such as AI, IoT, and big data. This study reviews previous studies and related cases on intelligent crime prevention to configure intelligent CPTED systems. Key technologies in the intelligent crime prevention system consist of AI-based CCTV video analysis, the platform in the control room, and IoT-based data sensing. For CCTV video analysis, technologies to recognize the behaviors of perpetrators or track suspects in video footage have been mostly proposed. They include intelligent video surveillance (e.g., violence and loitering), the automatic tracking of suspects through collaboration between multiple CCTV systems, the facial recognition system, license plate identification, and GPS-linked CCTV security systems [27; 28; 29; 30; 31; 32; 33; 34; 35]. For the platform, technologies for spatial and temporal crime prediction in the control center (situation room), support for decision-making among managers, and integration/connection with related systems have primarily been proposed.