Extended depth-of-field in integral-imaging pickup process based on amplitude-modulated sensor arrays

Abstract

Abstract. We implement a depth-of-field (DOF) extending pickup experiment of integral imaging based on amplitude-modulated sensor arrays (SAs). By implementing the amplitude-modulating technique on the SA in the optical pickup process, we can modulate the light intensity distribution in the imaging space. Therefore, the central maximum of the Airy pattern becomes narrower and the DOF is enlarged. The experimental results obtained from the optical pickup process and the computational reconstruction process demonstrate the effectiveness of the DOF extending method. We present that the DOF extending pickup method is more suitable for enhancing the DOF of three-dimensional scenes with small depth ranges. © The Authors. Published by SPIE under a Creative Commons Attribution 3.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.

Integral Imaging Pickup Method With Extended Depth-of-Field by Gradient-Amplitude Modulation

“…Nevertheless, this technique has a good performance in resolving the details of the 3D object in a 3D scene which has a small depth-range. While for a 3D scene with a large depth-range, the optical transfer function (OTF) for the annular-aperture method will suffer an attenuation and oscillation which will consequently degrading the image quality [29,30]. Therefore, the Cheng-Gao Luo, Huan Deng, Lei Li, Fei Wu, and Qiong- Hua Wang Integral Imaging Pickup Method with Extended Depth-of-Field by Gradient-Amplitude Modulation I annular-aperture method is more suitable for enhancing the DOF of II when recording small-depth 3D scenes.…”

Optimizing depth of field in 3D light-field display by analyzing and controlling light-beam divergence angle

“…In order to design a high-quality 3D LFD system, a number of studies about DOF analysis and promotion were performed [9][10][11][12][13][14] . Some researchers analyze the light intensity distribution in the amplitude-modulating pickup system and implement an optical pickup experiment using an amplitude-modulated sensor array (SA) to generate the DOF-enhanced elemental image array (EIA) for computational reconstruction to produce the 3D images with extended DOF [9] . This method is more suitable for enhancing the DOF of 3D scenes with small depth ranges.…”