  We demonstrate electromagnetic induction imaging with an unshielded, portable
radio-frequency atomic magnetometer scanning over the target object. This
configuration satisfies standard requirements in typical applications, from
security screening to medical imaging. The ability to scan the magnetometer
over the object relies on the miniaturization of the sensor head and on the
active compensation of the ambient magnetic field. Additionally, a procedure is
implemented to extract high-quality images from the recorded spatial dependent
magnetic resonance. The procedure is shown to be effective in suppressing the
detrimental effects of the spatial variation of the magnetic environment.
