基于二维小波变换的三相流化床气泡边缘检测  

Bubble Edge Detection in Three-phase Fluidized Bed Via 2D Wavelet Transformation

作　　者：杜建卫[1] DU jianwei(Department of Mathenatic and Physics,Beijing Institute of Petro-chemical Technology Beijing 102617,China)

机构地区：[1]北京石油化工学院数理系,北京102617

出　　处：《北京石油化工学院学报》2018年第2期71-76,共6页Journal of Beijing Institute of Petrochemical Technology

摘　　要：针对三相流化床反应器中的气泡图像的边缘检测问题,提出了一种基于二维小波变换的边缘检测方法,以二次样条函数构造二维小波函数,并应用于三相流化床气泡的边缘检测。实验结果表明,对于清水中的气泡图像,该方法好于传统边缘检测方法。为了更好地检测浑水中的气泡边缘,又提出了一种改进的小波函数构造方法,在应用于三相流化床气泡边缘检测中,无论是清水还是浑水下的气泡图像,都获得了较好的检测结果。In this paper,we proposed a new test method to detect the bubble edge in three-phase fluidized bed via 2D wavelet transformation.The wavelet function was constructed by spline of order two.The new method is superior to the traditional method in detecting bubble edge in clear water.Furthermore,we presented an improved way to detect the bubble edge in muddy water.In this way,a new wavelet function was constructed and applied to detecting the bubble edge in muddy water.

关 键 词：三相流化床反应器 气泡图像 二维小波变换 小波函数 

分 类 号：TP139.4[自动化与计算机技术—控制理论与控制工程]