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Next: Main pollen types studied Up: A Semi-Automatic System for Previous: Material and methods

Subsections


Pollen grain extraction

This module is developped at LASMEA.

Pollen grain detection and localisation


\begin{figure}\centering
\includegraphics{extraction_pollen.eps}\end{figure}

An automatic pollen grain extraction is done following these steps:

Pollen grain extraction

We perform a 3D acquisition of the pollen grains, resulting in a set of images at different depths (focus).


\begin{figure}\centering
\includegraphics{pollen3d.eps}\end{figure}

For each pollen grains:


\includegraphics[width=2.5cm]{olea001_035.eps2} \includegraphics[width=2.5cm]{olea001_045.eps2} \includegraphics[width=2.5cm]{olea001_055.eps2} \includegraphics[width=2.5cm]{olea001_061.eps2} \includegraphics[width=2.5cm]{olea001_068.eps2}

Man-machine interface

The system can work in supervised or in automatic mode. An interface allows the user to manipulate the system in supervised mode and to see the content of the microscopic slide.


\begin{figure}\centering
\includegraphics{interface_lasmea.eps}\end{figure}


next up previous
Next: Main pollen types studied Up: A Semi-Automatic System for Previous: Material and methods
Alain Boucher
2001-03-06