A grating projection imaging method is often used in non-contact shape and deformation measurement.By using moire topography,the equal-height or equal-displacement contour images of an object can be obtained in real time.However,more errors would be generated when the three dimensional (3-D)contour images of an object moving at a high speed are measured, because the phase-shifting moire method should capture several deformation grating images which have been phase-shifted.After a Digital Micro-mirror Device(DMD)is incorporated,the phase-shifting scanning moire method can obtain an equal-height or equal-displacement contour image within a frame time,and hence effectively reduce the imaging error of the 3-D contour of the object which is moving at high speed.