Automated inspection of aircraft parts using a modified ICP algorithm , H. N. V. Dutt and B.

Ravishankar, S and Dutt, HNV and Gurumoorthy, B (2010) Automated inspection of aircraft parts using a modified ICP algorithm , H. N. V. Dutt and B. International Journal of Manufacturing Technology, 46 (1-4). pp. 227-236.

[img] PDF
CA1.pdf - Published Version

Download (385kB)


The application of computer-aided inspection integrated with the coordinate measuring machine and laser scanners to inspect manufactured aircraft parts using robust registration of two-point datasets is a subject of active research in computational metrology. This paper presents a novel approach to automated inspection by matching shapes based on the modified iterative closest point (ICP) method to define a criterion for the acceptance or rejection of a part. This procedure improves upon existing methods by doing away with the following, viz., the need for constructing either a tessellated or smooth representation of the inspected part and requirements for an a priori knowledge of approximate registration and correspondence between the points representing the computer-aided design datasets and the part to be inspected. In addition, this procedure establishes a better measure for error between the two matched datasets. The use of localized region-based triangulation is proposed for tracking the error. The approach described improves the convergence of the ICP technique with a dramatic decrease in computational effort. Experimental results obtained by implementing this proposed approach using both synthetic and practical data show that the present method is efficient and robust. This method thereby validates the algorithm, and the examples demonstrate its potential to be used in engineering applications.

Item Type: Article
Uncontrolled Keywords: CNC .CMM. Point datasets . ICP. Hard registration . Soft registration . Part inspection
Subjects: AERONAUTICS > Aerodynamics
AERONAUTICS > Research and Support Facilities (Air)
Depositing User: Ms Indrani V
Date Deposited: 15 Nov 2010 08:12
Last Modified: 09 Jun 2011 05:32

Actions (login required)

View Item View Item