Correction algorithms in a laser scanning dimension measurement system

Chang, K.-S.; Lu, S.-T.; Wu, Yanyan; Chou, Cheng-Fu

doi:10.1049/ip-a-3.1992.0011

Cited by 1 publication

(1 citation statement)

References 2 publications

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“…Such gap measurement and validation are typically done through recording such panels gap width and flushness at several locations within the supply chain, which include the supplier facility -for in-house quality control -the receiving and handling station -for validation and audits -in addition to the original equipment manufacturer final assembly area. Acquiring the gap shape, width and flushness can be achieved through contact and non-contact methods (Joni and Anssi, 2009;Quan et al, 2005;Chang et al, 1992). The non-contact methods include transmissive and reflective methods.…”

Section: Introductionmentioning

confidence: 99%

Spatially constrained scanning scheme applied for gap measurements

et al. 2011

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Purpose -The purpose of this paper is to investigate an optical-based scanning modality for the real-time measurements of automotive interior gaps. Design/methodology/approach -The hardware is based on a charge-coupled device detector acquiring a laser illumination. The laser is projected on multitude of substrates with different reflectivities and surface profiles; while the scanning is progressed manually through a hand-held setup. Findings -The proposed software identifies the optical gap location automatically and establishes a dynamic field of view.Research limitations/implications -The study conducts a tool reliability and repeatability study that yield an accuracy of 0.08 mm and a repeatability of less than 6.5 percent as user bias. The developed hardware/software combination, when compared with two commercial systems; a 3D scanner and an industrially packaged sensor unit used for exterior gaps, which provided repeatability values of 24 and 17 percent, respectively, with accuracies of 1.5 and 0.34 mm. Originality/value -New hardware and software are developed in combination to operate effectively on different deco finish and gap separations.

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Section: Introductionmentioning

confidence: 99%