Volume 5 Issue 2
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Zhi DOU, Zhi-fang ZHOU, Si WANG, Yong HUANG. 2012: Digital image processing of saturation for two-phase flow in planar porous media model. Water Science and Engineering, 5(2): 202-209. doi: 10.3882/j.issn.1674-2370.2012.02.008
Citation: Zhi DOU, Zhi-fang ZHOU, Si WANG, Yong HUANG. 2012: Digital image processing of saturation for two-phase flow in planar porous media model. Water Science and Engineering, 5(2): 202-209. doi: 10.3882/j.issn.1674-2370.2012.02.008
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Digital image processing of saturation for two-phase flow in planar porous media model

doi: 10.3882/j.issn.1674-2370.2012.02.008

  • School of Earth Sciences and Engineering, Hohai University, Nanjing 210098, P. R. China

Funds:  the National Natural Science Foundation of China (Grant No. 51079043), the Special Fund for Public Welfare Industry of Ministry of Water Resources of China (Grants No. 200901064 and 201001020), and the Research Innovation Program for College Graduates of Jiangsu Province (Grant No. CXZZ11_0450).
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  • Corresponding author: Zhi DOU
  • Received Date: 2011-04-17
  • Rev Recd Date: 2011-06-30
    Abstract
  • In this paper, the accuracy of estimating stained non-wetting phase saturation using digital image processing is examined, and a novel post-processing approach for calculating threshold is presented. In order to remove the effect of the background noise of images and to enhance the high-frequency component of the original image, image smoothing and image sharpening methods are introduced. Depending on the correct threshold, the image binarization processing is particularly useful for estimating stained non-wetting phase saturation. Calculated saturation data are compared with the measured saturation data during the two-phase flow experiment in an artificial steel planar porous media model. The results show that the calculated saturation data agree with the measured ones. With the help of an artificial steel planar porous media model, digital image processing is an accurate and simple method for obtaining the stained non-wetting phase saturation.

     

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