A method for measuring bubble diameter in flotation process

The invention discloses a method for measuring a bubble diameter in a flotation process, which adopts an automatic method to measure the total volume of bubbles, the total number of bubbles, the sizeof bubbles and the diameter distribution of bubbles per unit cross-sectional area under different flotation liquid level depths. The measurement of bubble distribution in the flotation process under different height of liquid level is realized, and the method of machine vision is used to realize the automation of measurement. The moving region of bubbles can be effectively obtained by using a background removing technology. Through bubble feature matching technology, the omission or repeated statistics in the process of bubble diameter statistics can be effectively prevented. Bubble segmentation technology can effectively prevent the problem of rather big statistical particle size caused by bubble adhesion and make the instrument more accurate. The automatic segmentation of bubbles is realized. It solves the probl