Peng XIA^1,2, Tatsuki TAHARA^1,2, Takashi KAKUE^1,2*, Yasuhiro AWATSUJI^1†, Kenzo NISHIO³, Shogo URA¹, Toshihiro KUBOTA⁴, and Osamu MATOBA⁵

¹Graduate School of Science and Technology, Kyoto Institute of Technology, Kyoto 606-8585, Japan
²Research Fellow of the Japan Society for the Promotion of Science
³Advanced Technology Center, Kyoto Institute of Technology, Kyoto 606-8585, Japan
⁴Kubota Holography Laboratory Corporation, Uji, Kyoto 611-0042, Japan
⁵Graduate School of System Informatics, Kobe University, Kobe 657-8501, Japan

(Received August 14, 2012; Revised November 27, 2012; Accepted December 19, 2012)

To improve the quality of reconstructed images, we apply bicubic interpolation and B-spline interpolation to parallel phase-shifting digital holography for the first time. The effectiveness of bilinear interpolation, bicubic interpolation, and B-spline interpolation in parallel phase-shifting digital holography is shown by a numerical simulation. In the simulation result, the application of bicubic interpolation and B-spline interpolation succeeded in decreasing the root-mean-square error of the reconstructed image by 12.6 and 11.9%, respectively.

Key words: digital holography, three-dimensional imaging, image reconstruction technique, phase-shifting interferometry, holography

^*Present address: Chiba University, Chiba 263-8522, Japan.
^†E-mail address: awatsuji@kit.ac.jp