Patent ID: 11869207
Assignee: ARIZONA BOARD OF REGENTS ON BEHALF OF THE UNIVERSITY OF ARIZONA
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 6:
7. The method according to claim 1, comprising:, when the first wrapped phase-image includes phase noise wrapped with a period having the modulus of 2π, reducing a level of the phase noise in the first wrapped phase-image prior to transforming the first wrapped phase-image by performing at least one of the following denoising steps:
(7a) modifying phase values of pixels of the first wrapped phase-image by reducing noise corresponding to said pixels while, at the same time, preserving a gradient of phase distribution across the first wrapped phase-image;
(7b) removing speckle-like noise from those pixels of the first wrapped phase image that possess the speckle-like noise;
(7c) removing noise that is based on a gradient distribution of the phase in the first wrapped phase-image; and
(7d) determining positions of edges of phase-fringes in the first wrapped phase-image.