The workshop responds to the urgent need for architectural documentation in order to create resilient archives of the built heritage against the complex challenges of our time. Photogrammetry-based models have become a popular, cost-effective, and accessible method for documenting the built environment. However, the models consume significant digital storage space and require processing before they can be effectively utilized. Optimizing the models is important for a sustainable documentation. For this reason, we emphasize the importance of resilience and proactive preservation strategies while teaching the basics of photogrammetry-based 3D modeling in user-friendly and fast workflows in this workshop. We will cover the entire photogrammetry workflow, from photographing objects to optimizing models. Practical sessions will encourage the participants to actively engage in the accurate documentation of built heritage, while the presentations will further explore the utilization and challenges of collected data.

Objectives
● Outlining the need for architectural documentation, highlighting the importance of accessible methods.
● Develop a comprehensive understanding of the basics of photogrammetry-based 3D modeling and the
stages involved in the process.
● Familiarize participants with popular photogrammetry software tools, providing hands-on experience and
guidance on their usage to create accurate 3D models from photographs.
● Explore the potential applications and utilization of collected data for further analysis and preservation
efforts.
● Engage in discussions on ethical considerations in architectural documentation, including obtaining
consent, data management practices, ownership and authorship of the models, and cultural sensitivities.

Hardware:
1. Digital Cameras: Participants will utilize digital cameras or smartphones to capture high-quality images for photogrammetric reconstruction.
2. Computers: Participants need access to computer workstations for hands-on exercises and data processing. Participants will use free access to photogrammetry software to create 3D models from photographs.
3. Reference Markers: The use of reference markers or scale bars will be demonstrated to enhance accuracy and scale in photogrammetric models.
4. Color Checker: We will provide the “GretagMacbeth ColorChecker” that will be used for the workshop.

Software:
1. Darktable: a free and open-source software used for photo editing and processing. Within the scope of this workshop, it will be used to optimize images with a .RAW extension for photogrammetry.
2. Agisoft Metashape: Photogrammetry software; creates point clouds and 3D models from photographs. Within the scope of this workshop, it will be used to translate physical data to a digital model.
3. ZBrush: a software used for digital sculpting and 3D modeling. Within the scope of this workshop, it will be used to reduce the number of polygons and optimize the models obtained by photogrammetry for AR. (The participants will be asked to download a 14-day trial version for the workshop.)
4. Blender3D: a free, open-source 3D modeling, animation, and rendering program. It will be used for orienting the object and “baking” the mesh maps of the source model to the representative model