Abstract

We propose the use of a new encoding mask in order to improve the performance of the conventional time multiplexing super resolution method. The resolution improvement is obtained using a 2D Barker-based array that is placed upon the object and shifted laterally. The Barker-based array is a 2D generalization of the standard 1D Barker code. The Barker-based array has stable autocorrelation sidelobes, making it ideal for the encoding process. A sequence of low resolution images are captured at different positions of the array, and are decoded properly using the same array. After removing the low resolution image from the resulting reconstruction, a high resolution image is established. The proposed method is presented analytically, demonstrated via numerical simulation, and validated by laboratory experiment.

© 2015 Optical Society of America

Super-resolution using Barker-based array projected via spatial light modulator

Asaf Ilovitsh, Tali Ilovitsh, Eyal Preter, Nadav Levanon, and Zeev Zalevsky
Opt. Lett. 40(8) 1802-1805 (2015)

Feasibility study for super-resolution 3D integral imaging using time-multiplexed compressive coding

Ying Yuan, Xiaorui Wang, Jianlei Zhang, Xiongxiong Wu, and Yan Zhang
J. Opt. Soc. Am. A 33(7) 1377-1384 (2016)

Time multiplexing based extended depth of focus imaging

Asaf Ilovitsh and Zeev Zalevsky
Opt. Lett. 41(1) 183-186 (2016)

Super-resolution imaging using a camera array

Guillem Carles, James Downing, and Andrew R. Harvey
Opt. Lett. 39(7) 1889-1892 (2014)

Lensless three-dimensional integral imaging using variable and time multiplexed pinhole array

Ariel Schwarz, Jingang Wang, Amir Shemer, Zeev Zalevsky, and Bahram Javidi
Opt. Lett. 40(8) 1814-1817 (2015)