Abstract
Froth flotation is a type of mineral processing that selectively separates useful minerals from theBRfroth produced by pulp aeration. The physical features of the froth contain information to understandBRthe status of the process of froth flotation. In particular, by obtaining the color feature of the froth, itBRis possible to predict not only the type of useful mineral but also the grade of the mineral. Therefore,BRit is very important to obtain high-precision color analysis results in froth flotation monitoring. In thisBRpaper, we propose a color analysis method based on multivariate Gaussian mixture models to guaranteeBRthe cyclicity with a period of 360 degrees in hue component of color. In order to verify the proposedBRmethod, we present the color analysis results of images which contain around 0º (360º ) of hue andBRimages obtained by froth flotation. Through the experimental results, it shows that the color analysisBRresults obtained by the proposed method are more precise.BR
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