The surface height can be reconstructed accurately from a synthetic image by the iterative calculus,which provides a feasible approach for extracting the surface shape of fabric image.

The accuracy of iterative calculus was verified by recovering surface height of an object from its synthetic image, and the application of the calculus has been extended to reconstruct surface height from remote sensing image.

It introduces gaussian projection,this paper is based on the gaussian projection formula,using relatively simple iterative calculation of geodetic coordinates reverse the effect and the direct use of the same anti-formula.