Real-time measurement of interfacial tension by image processing

Hiroyasu Sakamoto, Akihiro Murao, Yoshiteru Hayami

Research output: Contribution to journalArticle

36 Citations (Scopus)

Abstract

This paper describes a method for constructing a precision online real-time measuring system of the interfacial tension of fluids by analyzing images of the fluids' drop shape interface. The measurement is based on MMSE fitting of a solution curve of Young-Laplace ordinary differential equations onto an observed drop curve. The system showed higher accuracy and efficiency than previously reported ones because we have introduced in our system a new method of detecting drop shape with sub-pixel accuracy and a Levenber-Marquardt-Morrison method of nonlinear optimization. In addition, we have proposed a new method of evaluating curve fitting error. Our method presents an effectual and precise means of analyzing time dependent phenomena in various fluids' interfaces through observing interfacial tension.

Original languageEnglish
Pages (from-to)1643-1650
Number of pages8
JournalKyokai Joho Imeji Zasshi/Journal of the Institute of Image Information and Television Engineers
Volume56
Issue number10
DOIs
Publication statusPublished - Oct 2002

All Science Journal Classification (ASJC) codes

  • Media Technology
  • Computer Science Applications
  • Electrical and Electronic Engineering

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