Speaker：Yibao Li（Xi'an Jiaotong University）

Time：2021-11-24 10:00

Location：Tencent Meeting ID：310156809（No Password）

Abstract:

In this talk, we will introduce a nonlocal Cahn-Hilliard equation and its applications in 3D printing and fingerprint restoration. A Crank-Nicolson method is proposed to discrete the nonlocal Cahn-Hilliard equation, which was developed for modeling microphase separation of diblock copolymers. We prove that our proposed scheme is unconditionally energy stable. Then we will present a robust and efficient fingerprint image restoration algorithm and surface pattern generation method for 3D printing. The proposed method has a merit that the pixel values in the damaged fingerprint domain can be obtained using the image information from the outside of the damaged fingerprint region. Restoration of fingerprint based on the adjacent pixel information can ensure the accuracy of fingerprint information with low computational cost. Computational experiments are presented to demonstrate the efficiency of the proposed method.