METHODOLOGY FOR RAPID MEASUREMENT AND COUNTING OF WATER MICRODROPLETS USING DIGITAL IMAGE PROCESSING
DOI:
https://doi.org/10.24054/rcta.v1i41.2421Keywords:
Digital Image Processing, Droplet Size Measurement, Spray CharacterizationAbstract
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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