A robust videogrametric method for the velocimetry of wind-induced motion in trees

- Two methods based on video sequences analysis are studied.
- The classical PIV method is compared with a tracking method called ST + KLT.
- Both methods were benchmarked in an experiment on a walnut tree in open-field condition.
- The ST + KLT method proved to be more accurate and robust than nat-PIV one.
- The outputs of the ST + KLT method are independent of the foliage and wind modalities.