Study of 3D contour generation method with digital holography

Based on digital holographic optical field distribution formula,the principle of 3D contour generation of digital holographic was analyzed,and resolution formulas of several different contour generation methods with digital holography were derived and computer simulations were done.It overcomes the difficulties of 3D contour generation method with optical holographic,and is a fast,high-precision 3D measurement method for the small object.