  We develop and experimentally demonstrate an imaging method based on the pink
noise pattern in the computational ghost imaging (CGI) system, which has a
strong ability to photograph moving objects. To examine its unique ability and
scope of application, the object oscillates with variable amplitude in
horizontal axis, and the result via commonly used white noise are also measured
as a comparison. We show that our method can image the object when the white
noise method fails. In addition, our method uses less number of patterns, and
enhances the signal-to-noise ratio (SNR) to a great extent.
