Holographic reconstruction of the displacement vector on arbitrary objects

With the help of digital holography it is possible to get amplitude as well as phase information of an optical wave field at the position of the detector. Numerical reconstruction enables the user to reconstruct an image of the object via back projection in space. In earlier works, our group was able to demonstrate 3D surface reconstruction of an object by combining digital holography and stereophotogrammetry. Therefore, two cameras have been used. In this work, we will demonstrate an additional technique. We are going to reconstruct the full displacement vector on the objects surface by recording holograms at four different positions in space and stereophotogrammetric matching of the resulting images.