Aiming at the problem of geometric calibration for multichannel curved screen projected display system , a correction algorithm was proposed based on dynamic texture segmentation. Firstly， cutting the curved screen according to the degree of correction. Secondly，seeks the appropriate texture position through the cutting spot to obtain a series of stripped texture and the relationship between before and after correction of four angle coordinates; Finally, use this relations to complete the frame buffer texture remapping to correct geometrical distortion. Experimental results on double channel projected display system indicate that the new solution could complete the geometric distortion correction effective .At the same time, without the specialized image gathering feedback equipment, it has a great advantage in cost.