Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Autofocusing algorithm of interferogram based on object image and registration technology

Not Accessible

Your library or personal account may give you access

Abstract

Because the depth of field (DOF) of lenses is limited, a captured interferogram usually includes a focused region and defocused region simultaneously when the form deviation of the helical tooth flank is measured with laser interferometry. Because of the impact of the interference fringe, the existing autofocusing algorithms are difficult for identifying the focused region of the interferogram directly. This paper proposes a new autofocusing algorithm based on the object image and registration technology. First, the reliability region is evaluated according to the gray level. Then the corresponding pixels in the image sequence are determined with the registration technology. Next, the focused region is judged by comparing the average gray gradients in object images. Based on the characteristics of measured gear and the DOF of lens, an experiment is designed. The experimental results are given to verify the feasibility and accuracy of the proposed autofocusing algorithm.

© 2013 Optical Society of America

Full Article  |  PDF Article
More Like This
Fringe direction weighted autofocusing algorithm for gear tooth flank form deviation measurement based on an interferogram

Xian Wang, Xindong Zhu, Ke Kou, Jianning Liu, Yun Liu, and Boxing Qian
Appl. Opt. 60(36) 11066-11074 (2021)

Improvement of the oblique-incidence optical interferometric system to measure tooth flanks of involute helical gears

Suping Fang, Leijie Wang, Pengcheng Yang, Lei Meng, Masaharu Komori, and Aizoh Kubo
J. Opt. Soc. Am. A 28(4) 590-595 (2011)

Simulation method for interference fringe patterns in measuring gear tooth flanks by laser interferometry

Suping Fang, Leijie Wang, Masaharu Komori, and Aizoh Kubo
Appl. Opt. 49(33) 6409-6415 (2010)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (19)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Tables (4)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (16)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved