Patent ID: 8699785
Filing Date: 2014-04-15
Classification: G01S,G06F,G06T

Abstract:
1. A method for determining a texture of an object, the method comprising: receiving a two-dimensional image representative of a surface of the object; estimating a three-dimensional (3D) projection of the image; transforming the 3D projection into a frequency domain; projecting the 3D projection in the frequency domain onto a spherical co-ordinate system; determining the texture of the surface by generating and analyzing spectral signatures for a tilt angle variation and an orientation angle variation extracted from the 3D projection on the spherical co-ordinate system; calculating a tilt angle value based on a comparison of sum of peak to peak distance between the spectral signature for the tilt angle variation and a reference spectral signature for the tilt angle variation; calculating an orientation angle value based on a comparison of sum of peak to peak distance between the spectral signature for the orientation angle variation and a reference orientation angle variation; and generating a texture value based on the tilt angle value and the orientation angle value.