Please use this identifier to cite or link to this item: https://doi.org/10.1117/1.2012202
Title: Shape measurement by the use of digital image correlation
Authors: Huang, Y.H.
Quan, C. 
Tay, C.J. 
Chen, L.J.
Keywords: Digital image correlation (DIC)
Magnification variation
Pinhole camera model
Shape measurement
Issue Date: Aug-2005
Source: Huang, Y.H., Quan, C., Tay, C.J., Chen, L.J. (2005-08). Shape measurement by the use of digital image correlation. Optical Engineering 44 (8) : -. ScholarBank@NUS Repository. https://doi.org/10.1117/1.2012202
Abstract: Digital image correlation (DIC) using a single camera has been widely used for determination of in-plane displacement. However, in order to obtain shape information on an object, one should employ stereo vision systems with multiple cameras. In this paper, a new method using digital image correlation for shape measurement is developed. In the proposed method, an object with a surface profile is given an in-plane translation, and digital image correlation is employed to measure the image displacement. Since the object has a surface height variation, the magnification at each point is different. Thus the image displacement field obtained from the DIC method contains the shape information of the object, which can be retrieved from a pinhole camera model. Principles of the proposed method are described. Experiments conducted to measure a step change and a light bulb show that the method is simple, effective, and suitable for measurement of a step change or a large object. © 2005 Society of Photo-Optical Instrumentation Engineers.
Source Title: Optical Engineering
URI: http://scholarbank.nus.edu.sg/handle/10635/61280
ISSN: 00913286
DOI: 10.1117/1.2012202
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

21
checked on Dec 7, 2017

WEB OF SCIENCETM
Citations

13
checked on Nov 23, 2017

Page view(s)

24
checked on Dec 11, 2017

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.