## 3 Analysis of Aging Building Remodeling and Object Recognition Technology  
### Guidelines for Aging Building Remodeling and Analysis of Related Research  
Remodeling is defined as \"the act of suppressing the aging of a building or partially expanding it for function enhancement, among other things\". In the context of extending the lifespan of a building during its lifecycle, remodeling is a crucial category in architecture, offering an efficient means to establish a sustainable architectural environment in the 21 st century [3]. Currently, terms like remodeling and renovation are used interchangeably, but this text predominantly employs the term \"remodeling\" in a broad sense. The remodeling process can be divided into planning, design, and construction phases. The planning phase is particularly important in the execution of remodeling projects, as it requires a more detailed analysis and process than new building construction plans to maintain and enhance various building performances [4]. Recent research directions in the field of aging building remodeling can be broadly categorized into three areas. First, there is research aimed at improving energy efficiency, with various studies exploring ways to reduce energy consumption in aging buildings and investigating energy-saving potential. The second area of research involves the study of recycled materials and building waste, focusing on sustainable remodeling materials and waste management practices, aiming to reduce environmental impact. Lastly, there is research on the introduction of renewable energy, such as solar and wind power systems, to enhance the sustainability of aging buildings, as seen in Figure 2.  
Notably, there is a vibrant body of research in the planning phase of remodeling aimed at enhancing energy performance. These studies typically conduct phased analyses based on the building's lifecycle and prioritize analyses depending on the extent of building reuse during remodeling. Interest in aging building remodeling is also growing in South Korea, and guidelines have been established accordingly. The Ministry of Land, Infrastructure, and Transport has published the \"Guidelines for Aging Building Remodeling\", which focus on safety, energy efficiency, and cultural heritage preservation. Additionally, the Korea Conformity Laboratories (KCL) provides technical guidelines for aging building remodeling, emphasizing energy efficiency and safety. Internationally, several guidelines have been introduced. Notably, the International Union of Architects (UIA) offers international guidelines related to aging building remodeling, emphasizing cultural heritage preservation and sustainability. The U.S. Green  
Figure 2: Renovation LCA stage and boundary diagram, [PERSON] et al. [5]. Building Council (USGBC) provides LEED certification for improving the sustainability of existing buildings. These guidelines are formulated to enhance building functionality, safety, and sustainability. To achieve this, architectural drawings and measurement data play a crucial role in the remodeling process. Currently, approximately 31.3% of buildings in South Korea do not possess architectural drawings. This percentage is derived by dividing the number of buildings with registered drawings in the Road Address Building Data held by the National Geographic Information Institute by the total number of buildings. During remodeling, architectural drawings are essential to understand the structure, layout, and facility locations of the existing building. In the absence of drawings, data collection must be done through measurements, particularly at the site, to precisely comprehend the current state of the building. The measurement process for creating architectural drawings typically begins with preparing laser distance measurement devices, cameras, scanners, and safety equipment. Both the interior and exterior of the building are measured, capturing vital architectural elements like size, structure, walls, windows, doors, and stairs.