Joint directional-positional multiplexing for light field acquisition by Kronecker compressed sensing

Abstract

In this paper, we propose a joint and unified framework to compressively capture a light field in the consideration of both directional and positional multiplexing based on Kronecker compressed sensing (KCS). First of all, both of the 2D angular and 2D spatial correlations of the light field can be fully utilized in the compressive acquisition, and the multiplexing is more flexible and balanced during the acquisition. Secondly, other types of light field acquisition can be unified into our proposed framework. In the experiment, it is shown that more balanced allocation between directional and positional multiplexing achieves better reconstruction quality of light field given the same number of total acquisitions. Furthermore, the experimental result also illustrates that the proposed method can capture a light field with full resolution and achieve better reconstruction quality than other previous methods.