Grey signal processing and data reconstruction in the non-diffracting beam triangulation measurement system

Hao Meng; Zhongyu Wang; Jihua Fu

doi:10.1117/12.819726

31 December 2008 Grey signal processing and data reconstruction in the non-diffracting beam triangulation measurement system

Hao Meng, Zhongyu Wang, Jihua Fu

Author Affiliations +

Proceedings Volume 7130, Fourth International Symposium on Precision Mechanical Measurements; 71304M (2008) https://doi.org/10.1117/12.819726
Event: Fourth International Symposium on Precision Mechanical Measurements, 2008, Anhui, China

Abstract

The non-diffracting beam triangulation measurement system possesses the advantages of longer measurement range, higher theoretical measurement accuracy and higher resolution over the traditional laser triangulation measurement system. Unfortunately the measurement accuracy of the system is greatly degraded due to the speckle noise, the CCD photoelectric noise and the background light noise in practical applications. Hence, some effective signal processing methods must be applied to improve the measurement accuracy. In this paper a novel effective method for removing the noises in the non-diffracting beam triangulation measurement system is proposed. In the method the grey system theory is used to process and reconstruct the measurement signal. Through implementing the grey dynamic filtering based on the dynamic GM(1,1), the noises can be effectively removed from the primary measurement data and the measurement accuracy of the system can be improved as a result.

Citation Download Citation

Hao Meng, Zhongyu Wang, and Jihua Fu "Grey signal processing and data reconstruction in the non-diffracting beam triangulation measurement system", Proc. SPIE 7130, Fourth International Symposium on Precision Mechanical Measurements, 71304M (31 December 2008); https://doi.org/10.1117/12.819726

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