Fig. 18From: Bridge vibration measurements using different camera placements and techniques of computer vision and deep learningMeasured vibration and extracted frequencies from a structure-mounted camera with varied operation speeds for CPB-4. a to f are the results from our method to process the visual data when fps = 30, 40, 50, 60, 78.5, and 84, respectively, and g is accelerometer data (e.g., the maximum range of the frequency axis is half of the sample rate)Back to article page