Comparison of suitability of tracking marks for optical measurement of displacement

Abstract

Optical methods for measuring displacement is a key enabling technology allowing evaluate vibration of the light weighted objects. In optical evaluation of vibration of object displacement with high speed camera, systematical errors occurs in determining the displacement because of the tracking mark properties. The present article compares the results of optical tracking of four most common tracking marks (Filmmakin, Ridgeline creative, Eye fish and Blurry vision) and also own designed tracking mark (FMEIII). To verify the suitability of different tracking marks with high-speed camera, the test stand were constructed and measured data were compared to highspeed laser interferometer measurement.