Adjusting vertical alignment of subfigures in LaTeX

When using subfigures in Latex, I have sometimes found it annoying how the figures are vertically aligned at the bottom, rather than being centered. An example: The following code

\begin{figure}

\subfigure{\includegraphics[width=67mm]{PipeScannerUnderGround}}

\subfigure{\includegraphics[width=47mm]{CylScanGeometryPipe}}

\caption{}

\end{figure}

produces the following figure:

which seems a little lopsided. I found a nice solution at stackoverflow: Use the \raisebox command to adjust the vertical position of individual subfigures, for example

\begin{figure}

\subfigure{\includegraphics[width=67mm]{PipeScannerUnderGround}}

\subfigure{\raisebox{10mm}{\includegraphics[width=47mm]{CylScanGeometryPipe}}}

\caption{}

\end{figure}

which yields the following result:

Much nicer! :)