A new approach on restoration of dynamic measurement uncertainties in optical precision coordinate metrology

2014 Joint IMEKO TC1-TC7-TC13 Symposium: Measurement Science Behind Safety and Security

Holder, S.^1 ; Reetz, E.^1 ; Linß, G.^1

Ilmenau University of Technology, Faculty of Mechanical Engineering, Department of Quality Assurance and Industrial Image Processing, Gustav-Kirchho-Platz 2, Ilmenau

98693, Germany^1

关键词: Convergence criterion;    Coordinate metrology;    Dynamic measurement;    Geometrical features;    Image restoration techniques;    Measurement uncertainty;    Relative motion;    State of the art;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/588/1/012021/pdf
DOI  :  10.1088/1742-6596/588/1/012021

来源: IOP

【 摘 要 】

This paper presents a new approach to the restoration of dynamic influenced measurement uncertainties in optical precision coordinate metrology (OPCM) using image sensors to measure geometrical features. Dynamic measurements within the context of this paper are based upon relative motion between the imaging setup (CCD-camera and optical system) and the measuring object respectively the measuring scene. The dynamic image acquisition causes image motion blur effects, which downgrades the uncertainties of the measurand. The approach presented deals with a new technique to restore motion degraded images using different methods to analyze important image features by extending the famous state of the art Richardson-Lucy image restoration technique using a new convergence criteria based on the variation of the detectable sub-pixel edge position of each iteration.