An Improved Python-Based Image Processing Algorithm for Flotation Foam Analysis

For industrial flotation foam image processing, accurate bubble size measurement and feature extraction are very important to optimize the flotation process and to improve the recovery of mineral resources. This paper presents an improved algorithm to investigate mineral flotation foam image segment...

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Published inMinerals (Basel) Vol. 12; no. 9; p. 1126
Main Authors Zhang, Wenkang, Liu, Dan, Wang, Chunjing, Liu, Ruitao, Wang, Daqian, Yu, Longzhou, Wen, Shuming
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 04.09.2022
Subjects
20th century
Accuracy
Algorithms
Analysis
Automation
Bubbles
Compensation
Computer vision
Efficiency
Feature extraction
Flotation
Fourier transforms
Image enhancement
Image processing
Image segmentation
Mineral processing
Mineral resources
Minerals
Morphology
Physical characteristics
Process controls
Programming languages
Python
Vision systems
Watersheds
Wavelet transforms
Working conditions
China
Online AccessGet full text
ISSN2075-163X
2075-163X
DOI10.3390/min12091126

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Summary:For industrial flotation foam image processing, accurate bubble size measurement and feature extraction are very important to optimize the flotation process and to improve the recovery of mineral resources. This paper presents an improved algorithm to investigate mineral flotation foam image segmentation for mineral processing. Several libraries implemented for the Python programming language are used for image enhancement and compensation, quantitative analysis of factors influencing the image segmentation accuracy, and suggestions for improvement of the flotation foam image processing. The bubble characteristics-size and morphology-and the influence of the flotation conditions on the flotation foam image are analyzed. A Python implementation of the Retinex image compensation method-region-adaptive and multiscale-is proposed to address known issues of uneven illumination and shadows affecting flotation foam images, thereby improving brightness uniformity. Finally, an improved version of the watershed segmentation algorithm included in the Python Open Source Computer Vision library is used for segmentation analysis. The accuracy of the flotation foam image segmentation is 3.3% higher than for the standard watershed algorithm and the segmentation time is 9.9% shorter.
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ISSN:2075-163X
2075-163X
DOI:10.3390/min12091126