[PDF][PDF] Linear volumetric focus for light field cameras.

DG Dansereau, O Pizarro, SB Williams - ACM Trans. Graph., 2015 - roboticimaging.org
We demonstrate that the redundant information in light field imagery allows volumetric focus,
an improvement of signal quality that maintains focus over a controllable range of depths. To …

Capsfield: Light field-based face and expression recognition in the wild using capsule routing

A Sepas-Moghaddam, A Etemad… - … on Image Processing, 2021 - ieeexplore.ieee.org
Light field (LF) cameras provide rich spatio-angular visual representations by sensing the
visual scene from multiple perspectives and have recently emerged as a promising …

Refocusing distance of a standard plenoptic camera

C Hahne, A Aggoun, V Velisavljevic, S Fiebig… - Optics …, 2016 - opg.optica.org
Recent developments in computational photography enabled variation of the optical focus of
a plenoptic camera after image exposure, also known as refocusing. Existing ray models in …

Baseline and triangulation geometry in a standard plenoptic camera

C Hahne, A Aggoun, V Velisavljevic, S Fiebig… - International Journal of …, 2018 - Springer
In this paper, we demonstrate light field triangulation to determine depth distances and
baselines in a plenoptic camera. Advances in micro lenses and image sensors have …

A double-deep spatio-angular learning framework for light field-based face recognition

A Sepas-Moghaddam, MA Haque… - … on Circuits and …, 2019 - ieeexplore.ieee.org
Face recognition has attracted increasing attention due to its wide range of applications, but
it is still challenging when facing large variations in the biometric data characteristics …

Light field-based face presentation attack detection: reviewing, benchmarking and one step further

A Sepas-Moghaddam, F Pereira… - IEEE Transactions on …, 2018 - ieeexplore.ieee.org
Vulnerability of face recognition systems to presentation attacks has attracted increasing
attention from the biometrics and forensics communities. Moreover, the recent availability of …

Light field image compression based on convolutional neural networks and linear approximation

N Bakir, W Hamidouche, O Déforges… - 2018 25th IEEE …, 2018 - ieeexplore.ieee.org
Computer vision applications such as refocusing, segmentation and classification become
one of the most advanced imaging services. Light Field (LF) imaging systems provide a rich …

Image-based visual servoing with light field cameras

D Tsai, DG Dansereau, T Peynot… - IEEE Robotics and …, 2017 - ieeexplore.ieee.org
This paper proposes the first derivation, implementation, and experimental validation of light
field image-based visual servoing. Light field image Jacobians are derived based on a …

Long short-term memory with gate and state level fusion for light field-based face recognition

A Sepas-Moghaddam, A Etemad… - IEEE Transactions …, 2020 - ieeexplore.ieee.org
Long Short-Term Memory (LSTM) is a prominent recurrent neural network for extracting
dependencies from sequential data such as time-series and multi-view data, having …

Focus model for metric depth estimation in standard plenoptic cameras

S Pertuz, E Pulido-Herrera, JK Kamarainen - ISPRS Journal of …, 2018 - Elsevier
In recent years, a lot of efforts have been devoted to the problem of depth estimation from
lightfield images captured by standard plenoptic cameras. However, most of the metric depth …