A new method is proposed for wide-area camera calibration using virtual calibration target created by one infrared light-emittng diode (IR-LED) marker fixed on the moving probe of a coordinate measuring machine (CMM). The camera takes an image when the IR-LED marker moves accurately with the CMM probe to each preset position in turn. Since the measurement space of common CMM is not large enough, the virtual calibration target is imaged in several camera poses to cover the whole measurement volume of the wild-area camera. The calibration parameters are initially obtained by using the 3D information of the virtual target and its image taken from each camera pose. The calibration parameters are finally solved by nonlinear optimization of the intrinsic parameters and the positions and orientations of the virtual calibration target with respect to the camera. The proposed method requires no large-size calibration target and can ensure the calibration accuracy. Experiments demonstrate the superior performance of the proposed method.