ENBIS-8 in Athens

21 – 25 September 2008 Abstract submission: 14 March – 11 August 2008

Bayesian Hierarchical Model for Integrating Multi-resolution Metrology Data

23 September 2008, 12:20 – 12:40


Submitted by
Yu Ding
Heidi Xia, Yu Ding, and Bani Mallick
Texas A&M
This article presents a Bayesian hierarchical model to integrate multi-resolution metrology data for inspecting geometry quality of manufactured parts. Our treatment includes using a Gaussian process for modeling metrology data at a single resolution level and establishing a linkage model to connect datasets at different resolutions. A unique problem in this metrology application is the misalignment between the low- and high-resolution datasets.
To address this issue, an optimization procedure is first employed to roughly align datasets of different resolutions and then a neighborhood linkage model is introduced to link a high-resolution data point with a group of low-resolution data points. Improvements are demonstrated using the datasets from a milled sine-wave part, measured by two coordinate measuring machines of different resolutions, respectively.

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