Spherical Panoramas for Architectural Surveying. From image to 3D model

The research proposes a method of survey and representation of architectural models starting from spherical images acquired with medium level 360 cameras. The procedure is based on the principles of projective geometry that regulate spherical images in which there is a main point O centre of the sphere, the spherical surface on which the image is generated and the real model. By having only the panoramic image and identifying the reciprocal position of the listed entities, it is possible to reconstruct three-dimensionally a portion of architecture represented on the panoramic image. The article illustrates an automated procedure using construction algorithms (related to geometry) and generative algorithms composed together using visual programming language (VPL); the case study for the validation of the procedure is a portion of Villa Giulia courtyard fence in Rome.