Segmentation of Gray Scale Images of Dropwise Condensation on Textured Surfaces

In the present work we developed an image processing
algorithm to measure water droplets characteristics during dropwise
condensation on pillared surfaces. The main problem in this process is
the similarity between shape and size of water droplets and the pillars.
The developed method divides droplets into four main groups based
on their size and applies the corresponding algorithm to segment each
group. These algorithms generate binary images of droplets based
on both their geometrical and intensity properties. The information
related to droplets evolution during time including mean radius and
drops number per unit area are then extracted from the binary images.
The developed image processing algorithm is verified using manual
detection and applied to two different sets of images corresponding
to two kinds of pillared surfaces.

Authors:

• Helene Martin
• Solmaz Boroomandi Barati
• Jean-Charles Pinoli
• Stephane Valette
• Yann Gavet

Keywords:

• Dropwise condensation
• textured surface
• image processing
• watershed.

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