\begin{abstract}
-
+Atomic force microscope (AFM) provides high resolution images of surfaces. We
+focus our attention on an interferometry method to estimate the cantilevers
+deflection. This method was based on the spline method to interpolate the
+deflection and the computations were performed on a PC with LabView. In this
+paper, we propose a new method based on the least square method and we present
+the implementation that we developped on a FPGA. Our method can be pipelined on
+a FPGA in order to manipulate image profiles very quickly. Simulations and real
+tests we have performed showed us that this implementation is very efficient and
+should allow us to control of a cantilevers array in real time.
\end{abstract}
\section{Conclusion and perspectives}
-
+In this paper we have presented a new method to estimate the cantilevers
+deflection in an AFM. This method is based on least square methods. We have
+studied the quantization of this algorithm and have implemented it on a
+FPGA. Our method gives comparable results compared to the initial version based
+on splines. Our solution has been be implemented with a pipeline technique.
+Consequently, it enables to handle a new profile image very quickly. Currently
+we have performed simulations and real tests on a Spartan6 FPGA.
+
+In future work, we want to couple our algorithm with a high speed camera
+and we plan to control the whole AFM system.
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