Volumetric Light-field Encryption at the Microscopic Scale

@article{Li2017VolumetricLE,
  title={Volumetric Light-field Encryption at the Microscopic Scale},
  author={Haoyu Li and Changliang Guo and Inbarasan Muniraj and Bryce C. Schroeder and John T. Sheridan and Shu Jia},
  journal={Scientific Reports},
  year={2017},
  volume={7}
}
We report a light-field based method that allows the optical encryption of three-dimensional (3D) volumetric information at the microscopic scale in a single 2D light-field image. The system consists of a microlens array and an array of random phase/amplitude masks. The method utilizes a wave optics model to account for the dominant diffraction effect at this new scale, and the system point-spread function (PSF) serves as the key for encryption and decryption. We successfully developed and… 

Volumetric bioimaging based on light field microscopy with temporal focusing illumination

Light field technique at a single shot can get the whole volume image of observed sample. Therefore, the original frame rate of the optical system can be taken as the volumetric image rate. For

Experimental optical encryption of grayscale information.

TLDR
A new protocol for achieving lower noise and consequently a higher dynamic range in optical encryption and introduces the use of a "reference mask" as a reference object used to eliminate the noise due to the complex nature of the masks used in experimental DRPE setups.

Physical Unclonable Functions using speckle patterns of perfect optical vortices

TLDR
Experimental and simulation results validate that the proposed key generation method is an effective alternative to the digital keys.

Light field multiphoton microscopy with temporal focusing-based volume selective excitation

Light field fluorescence microscopy (LFM) can provide three-dimensional (3D) images in one snapshot, but essentially lighting up the entirety of the sample, even though only a part of the sample is

Three-dimensional image authentication scheme using sparse phase information in double random phase encoded integral imaging.

TLDR
It is demonstrated that 3D images from integral imaging can be authenticated at different depths using a nonlinear correlation method and can provide enhanced information security because the decrypted 2D elemental images from the sparse phase cannot be easily observed by the naked eye.

True 3D reconstruction in digital holography

TLDR
The proposed methodology for digital holographic image reconstruction goes beyond numerically mimicking the traditional film based holographic replay and shows excellent slice-by-slice tomographic 3D reconstruction of the original object under the weak scattering approximation.

Storage-Computational Complexity Efficient Light Field Reconstruction

TLDR
A layered LU decomposition, partitioned Gaussian elimination and memory reusing method are proposed to reconstruct the light field for plenoptic camera and this method provides the best trade-off between the computational complexity and memory consumption.

References

SHOWING 1-10 OF 61 REFERENCES

Enhancing the performance of the light field microscope using wavefront coding.

TLDR
An extended optical model for the wavefront coded light field microscope is presented and a performance metric based on Fisher information is developed, which is used to choose adequate phase masks parameters.

Wave optics theory and 3-D deconvolution for the light field microscope.

TLDR
An optical model for light field microscopy based on wave optics, instead of previously reported ray optics models is presented, and a 3-D deconvolution method is presented that is able to reconstruct volumes at higher spatial resolution, and with better optical sectioning, than previously reported.

Encryption of digital hologram of 3-D object by virtual optics.

TLDR
In this technique the digital hologram is encrypted by attaching a computer-generated random phase key to it and then forcing them to Fresnel propagate to an arbitrary plane with an illuminating plane wave of a given wavelength.

Secure optical storage that uses fully phase encryption.

TLDR
These computer simulation results show that a fully phase-based encryption system generally performs better than an amplitude- based encryption system when the system bandwidth is limited by a moderate amount.

Encryption and volumetric 3D object reconstruction using multispectral computational integral imaging.

This paper presents a new method for three-dimensional (3D) scene acquisition via reconstruction with multispectral information and its Fourier-based encryption using computational integral imaging,

Recording and controlling the 4D light field in a microscope using microlens arrays

TLDR
A prototype system for simulating exotic microscope illumination modalities and correcting for optical aberrations digitally is described and demonstrated, and two applications for it are demonstrated.

Light field microscopy

TLDR
A prototype light field microscope is demonstrated, its optical performance is analyzed, and perspective views, focal stacks, and reconstructed volumes are shown for a variety of biological specimens.

Encrypting three-dimensional information with digital holography.

TLDR
A method for optical encryption of three-dimensional (3D) information by use of digital holography using a phase-shifting interferometer and an intensity-recording device.

Encrypted Three-dimensional Dynamic Imaging using Snapshot Time-of-flight Compressed Ultrafast Photography

TLDR
High-speed 3D videography of moving objects at up to 75 volumes per second is demonstrated and the ToF-CUP camera was applied to track the 3D position of a live comet goldfish.

Encrypted optical storage with wavelength-key and random phase codes.

TLDR
An encrypted optical memory system that uses a wavelength code as well as input and Fourier-plane random phase codes is proposed and it is shown that the number of available wavelength keys depends on the correlation length of the phase key in the Fourier plane.
...