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| Holographic interferometry (fringe tracking) - measurement of static and dynamic displecement fields. The images seen are those of the fringe skeletons obtained by holography, the values of the sensitivity vector across object's surface, the out-of-plane displacement field, one of the derivatives of normal displacement with respect to an in-plane direction and the gradient values. | Phase-stepped electronic holography
- to measure static and dynamic displacements. In the image, the
graphical interface of one of our software programs for phase unwrapping
- with possibilities for pre- and post-processing, masking, different filters.
In the image, application for 3-D shape measurement. , |
Quasi-binary, real-time interferometry The images are p^resenting the real-time desensitized hologram, the skeletons, the values of the sensitivity vector across object's surface, the vibration amplitude map and the derivative of this amplitude map with respect to one of the in-plane directions. |
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| Different interferometric techniques using the spatial phase shifting - holographic interferometry, electronic holography; moiré. In the graphical interface of the program may be seen the original image (the small image in the upper part of the window) ; the filter applied in the Fouroer plane and the phase modulo 2p obtained. | Structured light - for 3-D shape and large displacement measurement s.. The images represent the initial image of the object on which the fringes are projected, the phase modulo 2p with respect to a reference plane, the unwrapped phase representing the object shape, the profile of a vertical line and the automatic recognition of 3 plane surfaces of the scene. . | Interferometric techniques - e.g. holography , where FFT is used to transform the "cos" type fringes into phase modulo 2p fringes, to allow usi,ng phase unwrapping instead of fringe trtacking in order to get the displacement maps. . |