Document Detail


An autonomous phase-boundary detection technique for colloidal hard sphere suspension experiments.
MedLine Citation:
PMID:  16586491     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Colloidal suspensions of monodisperse spheres are used as physical models of thermodynamic phase transitions and as precursors to photonic band gap materials. Current techniques for identifying the phase boundaries involve manually identifying the phase transitions, which is very tedious and time-consuming. In addition, current image analysis techniques are not able to distinguish between densely packed phases within conventional microscope images, which are mainly characterized by degrees of randomness or order with similar grayscale value properties. We have developed an intelligent machine vision technique that automatically identifies colloidal phase boundaries. The technique utilizes intelligent image processing algorithms that accurately identify and track phase changes vertically or horizontally for a sequence of colloidal hard sphere suspension images. This technique is readily adaptable to any imaging application wherein regions of interest are distinguished from the background by differing patterns of motion over time.
Authors:
Mark McDowell; Elizabeth Gray; Richard B Rogers
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Microscopy research and technique     Volume:  69     ISSN:  1059-910X     ISO Abbreviation:  Microsc. Res. Tech.     Publication Date:  2006 Apr 
Date Detail:
Created Date:  2006-04-10     Completed Date:  2006-05-31     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9203012     Medline TA:  Microsc Res Tech     Country:  United States    
Other Details:
Languages:  eng     Pagination:  236-45     Citation Subset:  IM    
Affiliation:
Microgravity Division, NASA Glenn Research Center, Cleveland, Ohio 44135, USA. drmm@easy.grc.nasa.gov
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MeSH Terms
Descriptor/Qualifier:
Algorithms
Colloids / chemistry*
Image Processing, Computer-Assisted
Phase Transition*
Thermodynamics
Chemical
Reg. No./Substance:
0/Colloids

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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