The Centre for Infrastructure Performance and Reliability at The University of Newcastle, Australia, is actively working on an inventive masonry construction approach. This involves creating mortar-less engineered masonry panels using Semi-Interlocking Masonry (SIM) bricks (units) that exhibit notable energy dissipation capabilities by relying on friction within sliding bed joints between the bricks during seismic events. This unique technique of utilizing interlocked SIM bricks enables controlled sliding between brick courses within a wall while preventing bricks from moving out-of-plane. This study examines the relative movement of dry joints (horizontal and vertical) when the SIM panels were subjected to cyclic in-plane lateral displacement. The front of the panels employed Digital Image Correlation (DIC) with a speckle pattern to analyze the horizontal and vertical movement of SIM units. In contrast, the back of the panels utilized MATLAB image tools with survey targets for the same purpose. This study reveals that the relative displacement obtained from MATLAB image tools shows good agreement with DIC displacement outputs, even at large displacements (up to 100 mm).