  The sensitive detection of either static or radio-frequency \textsc{(rf)}
magnetic fields is essential to many fundamental studies and applications.
Here, we demonstrate the operation of a cold-atom-based, \textsc{rf}
magnetometer in performing {1-D and 2-D imaging} of small metallic objects. It
is based on a cold $^{85}$Rb atomic sample, and operates in an unshielded
environment with no active field stabilization. It shows a sensitivity up to
$200\, \rm{pT}/\sqrt{\rm Hz}$ in the $5-35\, \rm{kHz}$ range bandwidth and can
resolve a cut $0.4\, \rm{mm}$ wide in a $0.8\, \rm{mm}$ thick metallic foil.
The characteristics of our system make it a good candidate for applications in
civil and industrial surveillance.
