17 March 2005 High-speed close-range photogrammetry for dynamic shape measurement
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Proceedings Volume 5580, 26th International Congress on High-Speed Photography and Photonics; (2005) https://doi.org/10.1117/12.567331
Event: 26th International Congress on High-Speed Photography and Photonics, 2004, Alexandria, Virginia, United States
Abstract
We describe and characterize an experimental arrangement to perform shape measurements on a deformable object through dynamic close-range photogrammetry; specifically, an insect in flight. The accuracy of shape measurements in photogrammetry is improved by increasing the number of camera views. In static close-range photogrammetry, one may increase the number of camera views by moving the camera and taking a number of images, or equivalently, by moving the object. In dynamic close-range photogrammetry of rigid objects, one may combine all the camera views from a video sequence. However, in dynamic close-range photogrammetry of a deformable object, the number of camera views is restricted to the number of physical cameras available. The technique described here is to arrange a number of cameras around a measurement volume, illuminated by a laser synchronized to the cameras. The cameras are first calibrated, and then a bundle adjustment is used to determine point positions on the object. In this paper, we first determine the capabilities of the system in static close-range photogrammetry. We then perform a static shape measurement on our dynamic target and compare this with the results of dynamic close-range photogrammetry. The results indicate that high-speed dynamic measurements of the deformation of insect wings during flight should provide adequate resolution to develop an aeroelastic model of a flapping wing.
© (2005) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Iain D. Wallace, Iain D. Wallace, Nicholas J. Lawson, Nicholas J. Lawson, Andrew Robert Harvey, Andrew Robert Harvey, Julian D.C. Jones, Julian D.C. Jones, Andrew John Moore, Andrew John Moore, } "High-speed close-range photogrammetry for dynamic shape measurement", Proc. SPIE 5580, 26th International Congress on High-Speed Photography and Photonics, (17 March 2005); doi: 10.1117/12.567331; https://doi.org/10.1117/12.567331
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