Patent ID: 8649025
Filing Date: 2014-02-11
Classification: G01B,G06T

Abstract:
1. A method for obtaining three-dimensional coordinates of physical scenes comprising steps of: (a) illuminating a scene by at least one radiation pattern emanating from a projector frame, having a predetermined number of mostly rectilinear strips, each said strip having a predetermined position and orientation, having said strips interspersed with distinguishable dots, having said dots positioned at random coordinates and having predetermined distribution density; (b) recording at least a portion of said strips and said dots reflected by said illuminated scene in at least one digital frame in the form of profiles and dots of illuminated pixels corresponding to said at least a portion of said strips and said dots; (c) locating said profiles and said dots pixel-coordinates in said at least one digital frame; (d) identifying at least a subset of said dots in said at least one digital frame by corresponding dots in said projector frame; (e) identifying at least a subset of said profiles in said at least one digital frame by corresponding strips in said projector frame from said subset of dots in said projector frame; (f) calculating three-dimensional measurements corresponding to said subset of dots and said subset of profiles in said at least one digital frame by triangulating coordinates of said subset of dots and said strips in said projector frame in a local frame of coordinates.