Avian surface reconstruction in free flight with application to flight stability analysis of a barn owl and peregrine falcon.

ABSTRACT: Birds primarily create and control the forces necessary for flight through changing the shape and orientation of their wings and tail. Their wing geometry is characterised by complex variation in parameters such as camber, twist, sweep and dihedral. To characterise this complexity, a multi-view stereo-photogrammetry setup was developed for accurately measuring surface geometry in high resolution during free flight. The natural patterning of the birds was used as the basis for phase correlation-based image matching, allowing indoor or outdoor use while being non-intrusive for the birds. The accuracy of the method was quantified and shown to be sufficient for characterising the geometric parameters of interest, but with a reduction in accuracy close to the wing edge and in some localised reg

SUBMITTER: Durston NE 

PROVIDER: S-EPMC6525094 | biostudies-literature | 2019 May

REPOSITORIES: biostudies-literature