Open AccessUncertainty determination of a microvolume characterized through confocal microscope technique
Author(s) -
M. Berzal,
C. A. Chavez Barajas,
John M Christopher,
Beatriz Santamaría,
David Martínez Muñoz
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1193/1/012059
Subject(s) - microscope , ransac , confocal , point cloud , optics , monte carlo method , volume (thermodynamics) , measure (data warehouse) , computer science , confocal microscopy , materials science , algorithm , computer vision , physics , mathematics , data mining , image (mathematics) , statistics , quantum mechanics
Standardized measurements protocols are widely used and necessary in order to ensure a relivable and repetitive data. This work introduces a new procedure to measure the volume of any irregular micro-hole on a rough surface. A filtering and fitting model is proposed for calculating the void volume of the cavity. Experimental point cloud is acquired by optically measuring the micro-hole with a confocal microscope. RANSAC algorithm is used to establish the reference plane, while the limits of the cavity and the volume are determined by a proposed algorithm. The mentioned model is validated by measuring six real samples. In addition, the corresponding uncertainty is estimated by using Monte Carlo method.