Image Stability Testing for Displacement Measurements Using Time Base Photogrammetry

Photogrammetric methods are increasingly being used to measure displacements and deformations. One of the photogrammetric methods is the time base, which is mainly used to measure changes in the image plane. One of the most important conditions for achieving high accuracy with this method is to ensure the stability of the camera external orientation parameters (EOP). In this work primarily tilts of the camera using the Leica Nivel inclinometer, their impact and the possibilities of analytical correction are investigated. In this context, an experiment was performed by capturing the test and calibration point field with a Sony Alpha A7R III camera, while the inclinometer was also attached to the camera base. Photomodeler photogrammetric software was used to process the measurements