Schweickhardt, LeónLeónSchweickhardtTausendfreund, AndreasAndreasTausendfreundStöbener, DirkDirkStöbenerFischer, AndreasAndreasFischer2025-03-072025-03-072021-06-20https://media.suub.uni-bremen.de/handle/elib/873610.26092/elib/3654For digital image speckle correlation (DISC), a novel approach is introduced where an ensemble average over multiple different speckle patterns is calculated. As a result, the measurement uncertainty of the displacement is reduced by an order of magnitude without deteriorating the spatial resolution. This enables precise surface displacement field measurements in the micrometer range with a measurement uncertainty lower than 100nm at a spatial resolution below 20 μm. By using a digital micromirror device (DMD) for illumination modulation, measuring rates in the range of 25 Hz are possible while each measurement is based on 80 images.enAlle Rechte vorbehaltenAlle Rechte vorbehaltenSpeckle patternDiffusersModulationSpatial resolutionDigital micromirror devicesSpeckleDigital image correlation600Konferenzbeitragurn:nbn:de:gbv:46-elib87360