公开(公告)号：US11682179B2

公开(公告)日：2023-06-20

申请号：US17542504

申请日：2021-12-06

Applicant: Industrial Technology Research Institute

Inventor： Yu-Tai Li ,  Kao-Chi Lin ,  Cho-Fan Hsieh ,  Teng-Chun Wu ,  Cheng-Yu Peng

IPC: G06T19/00 ,  G06T3/40

CPC classification number: G06T19/006 ,  G06T3/4038

Abstract: A measuring method includes the following. An image to be tested of an object to be tested with a first characteristic pattern is formed and is copied to form multiple images to be tested. The multiple images to be tested are superimposed to form a to-be-tested overlapped image which has the multiple first characteristic patterns. A reference image of a reference object with a second characteristic pattern is formed and is copied to form multiple reference images. The multiple reference images are superimposed to form a reference overlapped image which has the multiple second characteristic patterns. The to-be-tested overlapped image and the reference overlapped image are superimposed to generate a virtual moiré image having a moiré pattern different from the multiple first characteristic patterns and the multiple second characteristic patterns.

公开(公告)号：US20230119864A1

公开(公告)日：2023-04-20

申请号：US17542504

申请日：2021-12-06

Applicant: Industrial Technology Research Institute

Inventor： Yu-Tai Li ,  Kao-Chi Lin ,  Cho-Fan Hsieh ,  Teng-Chun Wu ,  Cheng-Yu Peng

IPC: G06T19/00 ,  G06T3/40

Abstract: A measuring method includes the following. An image to be tested of an object to be tested with a first characteristic pattern is formed and is copied to form multiple images to be tested. The multiple images to be tested are superimposed to form a to-be-tested overlapped image which has the multiple first characteristic patterns. A reference image of a reference object with a second characteristic pattern is formed and is copied to form multiple reference images. The multiple reference images are superimposed to form a reference overlapped image which has the multiple second characteristic patterns. The to-be-tested overlapped image and the reference overlapped image are superimposed to generate a virtual moiré image having a moiré pattern different from the multiple first characteristic patterns and the multiple second characteristic patterns.