Abstract

A focused plenoptic camera has the ability to record and separate spatial and directional information of the incoming light. Combined with the appropriate algorithm, a 3D scene could be reconstructed from a single acquisition, over a depth range called plenoptic depth-of-field. In this Letter, we study the contrast variations with depth as a way to assess plenoptic depth-of-field. We take into account the impact of diffraction, defocus, and magnification on the resulting contrast. We measure the contrast directly on both simulated and acquired images. We demonstrate the importance of diffraction and magnification in the final contrast. Contrary to classical optics, the maximum of contrast is not centered around the main object plane, but around a shifted position, with a fast and nonsymmetric decrease of contrast.

© 2019 Optical Society of America

Light field 3D measurement using unfocused plenoptic cameras

Zewei Cai, Xiaoli Liu, Qijian Tang, Xiang Peng, and Bruce Zhi Gao
Opt. Lett. 43(15) 3746-3749 (2018)

Super-resolution in a defocused plenoptic camera: a wave-optics-based approach

Erdem Sahin, Vladimir Katkovnik, and Atanas Gotchev
Opt. Lett. 41(5) 998-1001 (2016)

Geometry parameter calibration for focused plenoptic cameras

Xin Jin, Xufu Sun, and Chuanpu Li
Opt. Express 28(3) 3428-3441 (2020)

Development of a modular, high-speed plenoptic-camera for 3D flow-measurement

Zu Puayen Tan, Kyle Johnson, Chris Clifford, and Brian S. Thurow
Opt. Express 27(9) 13400-13415 (2019)

Analytic plenoptic camera diffraction model and radial distortion analysis due to vignetting

M. Ardebili and G. Saavedra
J. Opt. Soc. Am. A 40(7) 1451-1467 (2023)