Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/13235
Title: Generalized form characterization of ultra-precision freeform surfaces
Authors: Cheung, CF 
Kong, L
Ren, M
Whitehouse, D
To, S 
Keywords: Freeform
Measurement
Surface
Issue Date: 2012
Publisher: Elsevier
Source: CIRP annals : manufactering technology, 2012, v. 61, no. 1, p. 527-530 How to cite?
Journal: CIRP annals : manufactering technology 
Abstract: This paper presents a generalized form characterization method named intrinsic feature-based pattern analysis method (IFPAM) for measuring ultra-precision freeform surfaces with sub-micrometer form accuracy. The IFPAM makes use of intrinsic surface properties, the Fourier-Mellin transform, and phase correlation to conduct surface registration. A bidirectional curve network based sampling strategy and a robust surface fitting method are built for accurate representation of the measured freeform surfaces. Compared with traditional least-squares-based methods, the IFPAM not only possesses better robustness and higher precision but also less susceptible to the uncertainty due to geometrical complexity and registration problems involving translation and rotation operations.
URI: http://hdl.handle.net/10397/13235
ISSN: 0007-8506
DOI: 10.1016/j.cirp.2012.03.015
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