This paper presents a method for recognition of surfaces represented by elliptical segments in structured three dimensional (3D) point clouds. The method is based on direct least squares fitting of ellipses in scanned lines. By recognizing elliptical segments in both directions of structured cloud it is possible to efficiently allocate G1 (and higher) continuous regions which represen... https://prhxynuqry7b7c.wikimidpoint.com/5250089/a_systematic_review_of_the_interrelations_of_urban_form_and_mode_choice_in_african_cities