Measurement technique for solid-liquid two-phase flow using a Normal-line Hough Transform method

Image processing method is proved to be an available and important approach for the measurement of multi-phase flow in the past researches. But there still remain some difficult technical issues such as to separate and position the overlapped particle phase in a dispersed two-phase flow, and to carry it out in an efficient way. In our research, we firstly proposed a Normal-line Hough Transform (NHT) method which can solve the problems in an efficient manner than the past ones. Then, we observed the measurement ability and validated the accuracy of the proposed method via a simulation experiment using a pair of pseudo particles. The result revealed that our proposed method could be a practicable one with a high efficiency of 114 times than usual Hough Transform method. What's more, we also compared the usability of our method with other existed ones using a Monte Carlo method, and the result reveals that our method is a robust one with a wider applicability.