What is Digital Speckle Pattern Interferometry (DSPI)?
Digital Speckle Pattern Interferometry (DSPI) is a highly sensitive optical technique used for measuring deformations, vibrations, and surface irregularities. The method relies on the interference of light scattered from a rough surface to generate a speckle pattern. When the surface undergoes deformation, the speckle pattern changes, and these changes can be analyzed to provide precise measurements.
