公开(公告)号：US10209698B2

公开(公告)日：2019-02-19

申请号：US14696049

申请日：2015-04-24

Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE

Inventor： Chung-Li Tai ,  Yao-Yang Tsai ,  Jay Huang ,  Ko-Shyang Wang ,  Chih-Kai Chiu

IPC: G05B19/401 ,  G06T7/80

Abstract: A calibration method applicable for an automation machining apparatus includes building a first stereoscopic characteristic model corresponding to an object, obtaining a stereoscopic image of the object, building a second stereoscopic characteristic model corresponding to the object based on the stereoscopic image, obtaining at least one error parameter corresponding to the second stereoscopic characteristic model by comparing the second stereoscopic characteristic model with the first stereoscopic characteristic model, and calibrating a machining parameter of the automation machining apparatus based on the at least one error parameter.

公开(公告)号：US11934171B2

公开(公告)日：2024-03-19

申请号：US17712372

申请日：2022-04-04

Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE

Inventor： Chih-Kai Chiu ,  Bo-Ting Yeh ,  Tsan-Huang Chen

IPC: H02K11/20 ,  G01D18/00 ,  G05B19/401 ,  H02K11/21

CPC classification number: G05B19/4015 ,  G05B2219/34013 ,  G05B2219/41095

Abstract: The present disclosure discloses a servo motor and an encoder calibration method. The encoder calibration method includes: calculating a gain error, an offset error and a phase error, by an error calculation block, according to a first signal and a second signal output by an encoder; calculating at least one gain calibration parameter, at least one offset calibration parameter and at least one phase calibration parameter, by the error calibration block, according to the gain error, the offset error and the phase error; and calibrating sequentially, by the encoder, the gain, the offset and the phase of the first signal and the second signal according to the at least one gain calibration parameter, the at least one offset calibration parameter and the at least one phase calibration parameter, wherein performing at least one gain calibration and offset calibration after the phase calibration is completed.

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.

公开(公告)号：US09747680B2

公开(公告)日：2017-08-29

申请号：US14092146

申请日：2013-11-27

Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE

Inventor： Chung-Li Tai ,  Chih-Kai Chiu ,  Yao-Yang Tsai

IPC: G06K9/00 ,  G06T7/00 ,  G06T19/20

CPC classification number: G06T7/001 ,  G06T19/20 ,  G06T2207/10024 ,  G06T2207/10028 ,  G06T2207/30164 ,  G06T2219/2012

Abstract: A method for vision machine inspection comprises providing depth information of a target acquired by an image capturing system, determining real-time three-dimensional information of a target object in a predetermined inspecting area based on depth information of at least one real-time image of the target. The method further comprises projecting color pixel information of a real-time color image of the target object to a three-dimensional virtual model based on the real-time three-dimensional information. The real-time color image may be acquired by a color camera system. The method further comprises generating a color three-dimensional virtual model. The color three-dimensional virtual model may comprise the color pixel information.