Metodología de rápida medición y conteo de microgotas de agua usando procesamiento digital de imágenes

Luis Gonzalo Vargas Quiroz; Jose Pablo Montoya; Mario Alejandro Muñoz León; David Alejandro Salazar Paz; Alcides Montoya Cañola

doi:10.24054/rcta.v1i41.2421

Authors

Luis Gonzalo Vargas Quiroz Universidad Nacional de Colombia https://orcid.org/0000-0002-2343-8852
Jose Pablo Montoya Universidad Nacional de Colombia https://orcid.org/0000-0002-5255-4975
Mario Alejandro Muñoz León Universidad Nacional de Colombia https://orcid.org/0000-0003-0548-8087
David Alejandro Salazar Paz Universidad Nacional de Colombia https://orcid.org/0009-0009-1838-1546
Alcides Montoya Cañola Universidad Nacional de Colombia https://orcid.org/0000-0001-9624-6133

DOI:

https://doi.org/10.24054/rcta.v1i41.2421

Keywords:

Digital Image Processing, Droplet Size Measurement, Spray Characterization

Abstract

This paper synthesizes a procedure performed for counting and measuring the area and diameter of individual droplets generated by a piezoelectric fog generator. A camera-based optical array was constructed to capture images of the water droplets against backlight. Using ImageJ software, the Sauvola Auto-Local Thresholding technique was applied, simultaneously binarizing the focused droplets and discarding the out-of-focus ones. Subsequently, the area and diameter of the droplets were calculated and processed using MATLAB. The results show that the method performs adequately in both binarizing the focused droplets and discarding the out-of-focus droplets in a single step, which resulted in a reliable droplet count with a measurement accuracy of 5 micrometers.

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