Calibration of circular aperture area using vision probe at inmetro

International Journal of Metrology and Quality Engineering

Pedro Bastos Costa¹  Felipe de Oliveira Baldner²  Fabiana Rodrigues Leta² 

[1] Brazilian National Metrology Institute (INMETRO), Nossa Senhora das Graças Avenue, 50 Xerém, Duque de Caxias-RJ, Brazil;Fluminense Federal University, Passo da pátria street, 156 – São Domingos, Niterói-RJ, Brazil

关键词: International Journal;    Metrology;    Quality Engineering;    IJMQE;    EDP Sciences;   

DOI  :  10.1051/ijmqe/2016009

学科分类：工程和技术（综合）

来源: EDP Sciences

【 摘 要 】

Circular aperture areas are standards of high importance for the realization of photometric and radiometric measurements, where the accuracy of these measures is related to the accuracy of the circular aperture area calibrations. In order to attend the requirement for traceability was developed in Brazilian metrology institute, a methodology for circular aperture area measurement as requirements from the radiometric and photometric measurements. In the developed methodology apertures are measured by non-contact measurement through images of the aperture edges captured by a camera. These images are processed using computer vision techniques and then the values of the circular aperture area are determined.

【 授权许可】

CC BY