Composite coding multiresolution three-dimensional digital imaging method

This invention discloses a three-dimension image forming method by use of compound code multi-resolution, that is the three-dimension digit technique based on the combination of lattice project and strip project. The method adopts the image-forming device composed of digit project shining emitter, image sensor receiver and image processor. It is first to use lattice project three-dimension digit image-forming without phase fussy characteristics and to get the three-dimension depth image of low resolution rate with lattice code and to project the strip onto the object surface; to use the characteristics of high accuracy of space phase modulation; to de the phase extension by combination with acquired object low resolution rate and to further get the accurate three-dimension image with multi-resolution of the object to be measured.