公开(公告)号：US20250139894A1

公开(公告)日：2025-05-01

申请号：US18422018

申请日：2024-01-25

Applicant: Industrial Technology Research Institute

Inventor： Wei-Shiang Huang ,  Chih-Kai Chiu ,  Yong-Sin Syu ,  Jhe-Ruei Li

IPC: G06T17/10 ,  G06T5/70 ,  G06T7/90

Abstract: A three-dimensional imaging method includes: projecting structured light pattern on a reference plane and capturing a reference plane image of the reference plane to obtain a reference phase; projecting structured light pattern on a workpiece surface and capturing a workpiece surface image set of the workpiece surface to obtain a workpiece phase; obtaining a workpiece phase difference based on the difference between the reference phase and the workpiece phase; performing temporal binarization encoding on the workpiece surface image set to generate a coded image; detecting noise areas in the coded image; integrating the noise areas to establish a noise phase mask; filtering noises in the coded image according to the noise phase mask to generate a noise-filtered phase; compensating for the noise-filtered phase to restore the workpiece phase difference; and performing three-dimensional reconstructing on the restored workpiece phase difference to form a 3D point cloud of the workpiece surface.