Integrating Terrestrial Laser Scanning, Generative AI, and Mixed Reality for Digital Heritage Reconstruction

The rapid acceleration of urbanization in developing regions has precipitated a dual crisis for architectural heritage: the physical degradation of structures and the intangible dissipation of cultural memory. Traditional conservation methodologies, which rely predominantly on static documentation, such as photography and manual surveying, are increasingly insufficient for capturing the complex spatial and temporal dimensions of these historic sites. This study introduces a novel, combinatorial methodological framework designed to bridge the gap between rigorous archiving and dynamic public engagement. We detail a workflow that synergizes three distinct technologies: Terrestrial Laser Scanning (TLS) to capture the tangible geometric attributes of the building with millimeter-level accuracy; Conditional Generative Artificial Intelligence (CGAI) to generate historically informed visual representations of lost cultural elements (specifically, traditional temple fair structures) based on archival references; and Augmented Reality (AR) via holographic headsets to superimpose these layers into a unified Mixed Reality (MR) experience. The protocol describes the complete pipeline from data acquisition strategies and point cloud processing to AI-driven model generation and final deployment. This approach yields a dynamic digital simulacrum that successfully overlays high-precision spatial data with interpretive cultural visualizations, offering a technically feasible and scalable workflow for the digital preservation and augmented exhibition of urban heritage landmarks.