Feasibility Study of Earthquake-Induced Damage Assessment for Structures by Utilizing Images from Surveillance Cameras

Figure 11

The extracted first modal response of the second story and the estimated first natural frequency of the structure: (a, b) DS 1; (c, d) DS 2; (e, f) DS 3.

(a)

(b)

(c)

(d)

(e)

(f)