## 2 Experimental Setup and Processing Methods
### High-Speed Camera Shooting and Image Analysis  
Table 2 and Figure 4 show the equipment used for high-speed camera shooting and image analysis, including a high-speed camera, targets, and an image analysis program. To estimate the displacements of super high-rise and complex facilities at the time of excitation, the high-speed camera was used for the image capture at 1000 frames per second and image analysis; (\(x,y,z\)) is the coordinate value of the tracker attached to the structure using a TEMA (Telecommunication Engineering and Manufacturing Association) image analysis program. The tracked tracker comprises the reference coordinate system, and then relative displacement is measured. \begin{table}
\begin{tabular}{c c} \hline \hline
**Parameter** & **Specifications** \\ \hline Sensor input channels & Internal 2 or 3 axial MEMS ACC sensor \\ Resolution & 16 bit resolution \\ Dynamic range & 62.6 dB (typical) \\ \multicolumn{2}{c}{**MEMS Accelerometer Requirements**} \\ Range & \(\pm\)1.2 g, \(\pm\)2.0 g, \(\pm\)3.0 g, \(\pm\)5.0 g \\ Sensitivity & 1000 mV/g, 420 mV/g, 300 mV/g, 174 mV/g \\ Noise Density & 110 μ/rtHz, 250 μ/rtHz, 300 μ/rtHz, 250 μ/rtHz \\ \multicolumn{2}{c}{**Sampling**} \\ Measurable signal bandwidth & 0 Hz to 50 Hz (custom options available to 400 Hz) \\ Sampling rate & 50 to 1200 SPS, 2400 SPS (Via iLOG-RECEIVER) \\ \hline \multicolumn{2}{c}{**Operating Parameters**} \\ \hline Wireless communication range & Outdoor: 200 m (typical) \\ Radio frequency (RF) transceiver carrier & Indoor: 50 m (typical) \\ RF communication protocol & 2.4 Ghz to 2.4835 Ghz Bluetooth V2.0 + EDR Class 1 \\ RF Power & Max 18 dBm \\ Power source & Internal: 3.7 V 280 mA Li-po battery \\ Power consumption & 0.5 W (Active mode) \\ Duration & 2 h (Active mode) \\ Operating temperature & \(-\)20 \({}^{\circ}\)C to +60 \({}^{\circ}\)C \\ \hline \multicolumn{2}{c}{**Physical Specifications**} \\ \hline Dimensions & 64 mm \(\times\) 41.5 mm \(\times\) 18 mm \\ Weight & 65 g \\ Endosure material & Aluminum \\ Environmental rating & Indoor use \\ \hline \hline \end{tabular}
\end{table} 
Table 1: Detailed specification of acceleration (iLOG-MEMS-ACC) used in shaking table test. Figure 3: Pictures of (**a**) high-speed camera; (**b**) target. The test procedure for the image analysis and the high-speed camera setting procedure is described here. First, quadrant targets were attached to the corners of each layer in order to measure the three-axis displacement of each layer using a vibrating tester. The size of the target was chosen to be sufficiently large to identify and analyze each frame for a high-speed camera shooting. To measure three-dimensional coordinates using a high-speed camera image, two high-speed cameras should be used to start shooting at the same point in time. The target to be observed (target attached to each layer) should be captured on each camera image. The position of the camera should be adjusted so that the target does not deviate out of the image while the excited structure is moving. The camera angle is adjusted to be between 45 degrees and 180 degrees. To correct the distortion caused by the lens curvature, which is a problem for all camera lenses, it is necessary to take certain calibration values (parameter values for distortion correction) by shooting the calibration board several times. A high-speed camera with a shooting speed of over 1000 frames per second has a limited shooting time, depending on resolution and frames per second, which depend on the camera's performance. Since the high-speed camera used in this test requires 50 s of shooting per experiment, the resolution was set at \(2560\times 1600\) pixels. The basic concept of image analysis is to obtain a tracking shot of the trackers (targets) in each image taken by the high-speed camera, separating each frame using the algorithm included in the image analysis program, and converting the frames into data for easy analysis before finally reporting it.