Principal Investigator Oral Buyukozturk
Co-investigators Hao Sun , Kunal Kupwade Patil , Robert W Haupt , Robert Shin , Huseyin Sadi Kuleli , Thomas Herring , M Toksöz , Ju Li , John Fisher , Fredo Durand , William Freeman , Christoph Reinhart , John Ochsendorf , Markus Buehler , Sidney Yip
The Motion Magnification algorithm can magnify small motions in videos in specific bands of frequencies; for structures if you choose the frequencies to coincide with resonant frequencies you can create videos of the approximate or operational mode shapes. Expanding on this, using phase based optical flow, quantitative displacements can be measured from videos and mode shapes can be identified.
Currently, in pseudo real-time we can take a video of a small structure, identify and measure its operational mode shapes, and generate motion magnified video at the identified resonant frequencies. Vibrational inspection of small structures and machinery is currently being developed. For measurements of distant civil infrastructure, issues such as atmospheric turbulence and camera platform motion will be investigated.