A new autofocus method based on angular spectrum method in digital holography

• Main Authors: Wang, Zhaomin, Qu, Weijuan, Yang, Fang, Wen, Yongfu, Anand, Asundi
• Other Authors: Tian, Ailing
• Format: Conference or Workshop Item
• Language: English
• Published: 2018
• Subjects: Angular Spectrum Method; Digital Holography; DRNTU::Engineering::Mechanical engineering
• Online Access: https://hdl.handle.net/10356/88187; http://hdl.handle.net/10220/46903
• Institution: Nanyang Technological University

The determination of numerical reconstruction distance is key to recover the wavefront at focal plane in digital holography. In this paper, we propose a new autofocus method based on angular spectrum method (ASM). The proposed method takes successive Fourier transform after 1st order spectrum select...