Measurement of three-dimensional deformation using speckle projection method

Feipeng Zhu; Wenwen Liu; Xiaoyuan He

doi:10.1117/12.839350

25 August 2009 Measurement of three-dimensional deformation using speckle projection method

Feipeng Zhu, Wenwen Liu, Xiaoyuan He

Proceedings Volume 7375, ICEM 2008: International Conference on Experimental Mechanics 2008; 73755N (2009) https://doi.org/10.1117/12.839350
Event: International Conference on Experimental Mechanics 2008 and Seventh Asian Conference on Experimental Mechanics, 2008, Nanjing, China

Abstract

Optical triangulation is a useful method that has been studied and utilized extensively. In optical triangulation, the directions of projection and the observation are different, so the patterns captured by CCD camera include information of the object surface profile. Based on the speckle projection, a measurement system to get the three-dimensional deformation of object is developed. With artificial random speckle projected to the object surface, two images before and after object deformation are recorded, respectively. In order to get the information of the deformation, digital image correlation method (DICM) is adopted. Furthermore, the calibration is introduced in detail, which is the procedure of great importance, because it determines directly the accuracy of measurement. Due to variable feature of the calibration coefficient along the x direction, this paper presents a new method to be competent for the calibration, that's segmented calibration method. Experiment is performed and good agreement is found with the proposed calibration. Dynamic measurement results based on such system are also presented in this paper.

Citation Download Citation

Feipeng Zhu, Wenwen Liu, and Xiaoyuan He "Measurement of three-dimensional deformation using speckle projection method", Proc. SPIE 7375, ICEM 2008: International Conference on Experimental Mechanics 2008, 73755N (25 August 2009); https://doi.org/10.1117/12.839350

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
8 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Calibration

Speckle

CCD cameras

Projection systems

Digital image correlation

Image segmentation

Fringe analysis

Show All Keywords

Keywords/Phrases

Search In:

Publication Years