Optics Letters · 2011 · 20 citations · 7 references
EngineeringOptical TestingComputer-aided DesignOptical Measurement NetworkStereo VisionOptical PropertiesCalibrationPhotometric StereoOptical SystemsInstrumentationComputational GeometryOptical Measurement MethodGeometric ModelingPhotonicsMachine VisionSynthetic Calibration MethodComputer EngineeringComputer Vision3D VisionNatural SciencesComputer Stereo VisionOptical Information Processing3D Scanning3D Reconstruction
An optical measurement method for large-scale and shell-like objects is proposed and is verified by experiments. The underlying concept is a model-based optical measurement network consisting of multinode three-dimensional (3D) sensors. To achieve this, a synthetic calibration method is presented to enable the measurement. A phase-aided active stereoscopy is thus applied to each node sensor for acquiring partial range images from different viewpoints. The multiple range images are then registered to obtain a 3D reconstructed model, which is compared with the computer-aided design (CAD) model to quantitatively reveal the differences between the two models. Experiment results are also presented to validate the proposed approach.
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