Abstract: There is described a method for rendering an image of a 3D environment. The method comprises: receiving a plurality of reference images, each reference image representing a respective view of the 3D environment according to a respective reference viewpoint position; generating a pre-image of the 3D environment according to a given position, direction and field of view, each given pixel of the pre-image encompassing a respective portion of the 3D environment; and for each given pixel: identifying, amongst the reference viewpoint positions, an adequate viewpoint position for the given pixel; identifying a given one of the reference images; and assigning a given texture value to the given pixel based on the respective reference texture value associated with the given one of the reference pixels, thereby texturing the pre-image and obtaining a rendered image; and outputting the rendered image.

Abstract: Methods and systems for extracting data from a three-dimensional visual representation of a physical space, the three-dimensional visual representation of the physical space comprising either a mesh of a plurality of polygons or point cloud data points. The present method includes the steps of defining an extraction polyhedron enclosed by a boundary surface, identifying data inside the boundary surface of the extraction polyhedron for extraction, extracting the data identified inside the boundary surface of the extracting polyhedron and storing the extracted data in data storage.