3D reconstruction is the process of creating a three-dimensional model of an object or environment from two-dimensional images or data. This technique is widely used in various fields, including computer graphics, virtual reality, and medical imaging. By analyzing multiple images taken from different angles, software can generate a detailed 3D representation. The process often involves capturing images using cameras or sensors, which are then processed using algorithms to identify shapes, textures, and spatial relationships. 3D reconstruction can be applied in areas such as archaeology to preserve historical sites, or in robotics for navigation and object recognition.