数字图像处理技术在掺气浓度测量中的应用研究

Application of Digital Image Technique in Measurement of Bubble Void Fraction

结合掺气水流的特点,采用一种迭代法确定图像最佳阈值,提出计算掺气浓度的图像处理算法,由此计算的掺气浓度精度令人满意,并通过实验验证了其可靠性,从而为数字图像处理技术在高速水力学中的应用做出了成功的探索。

Considering the feature of aeration water an iteration method is proposed to determine the threshold for image segmentation and void fraction computation. Then we give algorithm and prove the reliability through experiment, which give the successful exploration of the use of digital image process technology in highvelocity water.