\begin{figure}
\vskip-6in % OPTIONAL VERTICAL SKIP
\scalebox{.7}[.7]{\includegraphics*{fig1}} % ADJUST THE SCALING
\hskip-1.5in % OPTIONAL HORIZONTAL SKIP
\caption{Images of 105 simulated one-legged robots and 6 simulated bicycle riders.} % OPTIONAL CAPTION
\end{figure}
\documentclass[12pt,twocolumn]{article}
Also, here's another image example:
Latex with an image - produces this
pdf