I scan most objects using the photogrammetric method using Reality Capture software, currently considered one of the leading ones, providing high resolution and model accuracy. Photogrammetry is a passive remote sensing method based on the analysis of a large number of photos of the examined object taken from different positions. a large number of photos of the examined object taken from different positions. Software algorithms analyze the photographs, recognizing the same points (pixel groups) on them. By examining perspective distortions, the program locates the location of the camera in space for individual shots and the location of points on the surface of the examined object. A polygon mesh is created from the point cloud created in this way.
In the case of this method, there are practically no limits in terms of the size of the object. Moving objects are always documented using professional photographic and studio equipment, including a shadowless tent and appropriate lighting. It is possible to perform the work using a mobile studio at the client’s premises. In architectural objects, a drone is usually used for photos.
It is possible to scan moving objects using a structured light scanner. This is an active method, in which a digital projector, which is part of the measurement system, projects a specific raster image, and a camera detector reads it after it has been deformed by the surface of the object being examined and transmits it to the central unit. Then, software algorithms cooperating with the scanner, analyzing the deformation, determine the geometry (X, Y, Z coordinates of individual points) of the surface.
Based on the scan, a digital reconstruction of the object’s original appearance can then be made.