3-D Object Repositioning

M. Michalski; H. Rabal; M. Garavaglia

doi:10.1117/12.949476

19 September 1985 3-D Object Repositioning

M. Michalski, H. Rabal, M. Garavaglia

Proceedings Volume 0555, Medical Imaging and Instrumentation '85; (1985) https://doi.org/10.1117/12.949476
Event: Medical Imaging and Instrumentation '85, 1985, Boston, United States

Abstract

A new incoherent method for 3-D object repositioning is proposed, which was verified by experiments. This technique allows overall repositioning instead of individual points of the object, as usually. When a good repositioning is achieved, or if the object remains in the same place, deformations or movements will be observed at real-time. The method consists of two steps: Recording of a grating projected onto a 3-D object, and re-projection of the developed record onto the repositioned object. A photographic enlarger is used in both steps. The mismatching with the original position is observed as deviations of the grid fringes with respect to the original pattern. The sensibility may be governed by varing the grid frequency. This method does not require more stability conditions than the usual moire techniques, and its operating range is from a few millimeters to several meters. Several applications are suggested.

Citation Download Citation

M. Michalski, H. Rabal, and M. Garavaglia "3-D Object Repositioning", Proc. SPIE 0555, Medical Imaging and Instrumentation '85, (19 September 1985); https://doi.org/10.1117/12.949476

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