This paper presents a novel calibration method to build up pixel correspondence between the IR CCD sensor and the visible CCD sensor of a 2CCD camera by using absolute phase calculation. Vertical and horizontal sinusoidal fringe patterns are projected onto a white plate surface through the visible and infrared (IR) channels of a DLP projector. The visible and IR fringe patterns are captured by the IR sensor and visible sensor respectively. Absolute phase of each pixel at IR and visible channels is calculated by using the optimum three-fringe number selection method. The precise pixel relationship between the two channels can be determined by the obtained absolute phase data. Experimental results show the effectiveness and validity of the proposed 2CCD calibration method. Due to using continuous phase information, this method can accurately give pixel-to-pixel correspondence.