Long depth-range measurement for fringe projection photogrammetry using calibration method with two reference planes

Using a calibration method with two reference planes, this study proposes simple to extend measurement range in an optical direction for fringe projection technique. The proposed only inserts baseline the conventional pattern projected onto object surface and computes exact phase alignment extended area concerning baseline. correction coefficient fundamental equation calculating 3D position coordinates of is developed prevent accuracy degradation caused by extending range. Regardless extension range, verification test demonstrates that provides result same as method. Furthermore, through shape stationary parabola antenna reflector having diameter 1.5 m, pendulum motion flat plate large amplitude, complicated deployment behavior flexible membrane structure, effectiveness applicability actual structures are demonstrated. This offers photogrammetry applicable capture dynamic responses amplitude large-sized high spatial resolution.