Measurement of surface tension and contact angle using entropic edge detection
Presents a new method to measure the surface tension and the contact angle of a liquid. The measurement procedure comprises 3 steps: acquisition of the liquid drop image; image segmentation to obtain the contour of the drop; and surface tension and contact angle calculation by the axisymmetric drop...
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Published in | Measurement science & technology Vol. 12; no. 3; pp. 288 - 298 |
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Main Authors | , , , , , |
Format | Journal Article |
Language | English |
Published |
Bristol
IOP Publishing
01.03.2001
Institute of Physics |
Subjects | |
Online Access | Get full text |
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Summary: | Presents a new method to measure the surface tension and the contact angle of a liquid. The measurement procedure comprises 3 steps: acquisition of the liquid drop image; image segmentation to obtain the contour of the drop; and surface tension and contact angle calculation by the axisymmetric drop shape analysis method. In the second step, a new segmentation method is used based on the Jensen-Shannon divergence, an entropic measurement of coherence among distribution probabilities. The advantages of using this entropic edge detection method are shown; it is especially suitable when the source image of the drop is affected by any kind of noise, blur or low-contrast effect. Results reveal a better performance than other methods used in this field. (Original abstract) |
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Bibliography: | ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 |
ISSN: | 0957-0233 1361-6501 |
DOI: | 10.1088/0957-0233/12/3/307 |